ROHM BU94702AKV Technical data

A

USB Audio Decoder ICs

AAC/WMA/MP3+SDMemory Card
+CD-ROM+MP3 Record

BU94702AKV

●Description
BU94702ARKV is MP3 encoder + WAV/AAC/WMA/MP3 decoder IC which contains
program download function from external serial Flash ROM and contains USB host, SD card I/F,
CD-ROM I/F, audio DAC, system controller, regulator for internal CORE power supply.

●Features

1) USB2.0 Full Speed host I/F function contained.

2) SD card I/F function contained.

2

C format I/F function contained.

3) I

4) MP3 encode function contained. (available for MPEG1, Layer3, support up to 2X input speed)

5) MP3 decode function contained. (available for MPEG1, 2 and 2.5, Layer 1, 2 and 3)

6) WMA decode function contained. (available for WMA9 standard and not available for DRM)

7) AAC decode function contained. (available for MPEG4 AAC-LC and not available for DRM)

8) WAV format file playing function contained.

9) Sample Rate Converter contained.

10) System Controller contained.

11) FAT analysis function contained.

12) CD-ROM I/F function and CD-ROM decode function contained.

13) Browsing function of other File Names, Folder Names on music playing contained.

14) ID3TAG and WMATAG and AACTAG Analysis.

15) Fast forward playing and fast backward playing function contained.

16) KEY function can control. (STAND ALONE MODE)

17) External processor can control. (SLAVE MODE)

18) Resume function contained.

19) Audio DAC contained.

20) Sound Effect function contained.

21) Digital Audio Out(I

22) Digital Audio Input(I

23) Program download function from external serial Flash ROM contained.

24) Regulator for internal CORE power supply contained.

25) VQFP80pin(0.5mm pitch)

●Applications
Audio products, etc.

2

S, EIAJ, S/PDIF) function contained.

2

S, EIAJ) function contained.

No.12080EAT06

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●Absolute maximum ratings (Ta = 25℃)

Parameter Symbol Limits Unit Comment

Supply voltage(Analog, I/O) VDD1MAX

Input voltage VIN
Storage temperature range TSTG
Operating temperature range TOPR
Power dissipation *1 PD 900

*1：In the case of use at Ta=25℃ or more, 7.5mW should be reduced per 1℃.
Radiation resistance design is not arranged.

●Operating conditions (Ta = 25℃)

Parameter Symbol Limits Unit Comment

Supply voltage(Analog, I/O) VDD1

Technical Note

-0.3～4.5 Ｖ

-0.3 ～ VDD1 + 0.3 Ｖ

-55～125 ℃

-40～85 ℃

ｍＷ

3.0～3.6 V DVDDIO,VDD_PLL,

DVDDIO, VDD_PLL,
DAVDD, AVDDC

DAVDD, AVDDC

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Technical Note

1. Electrical characteristics

（Unless specified, Ta=25℃、VDD1=3.3V, DVSS=AVSSC=VSS_PLL=DAVSS=0V, XIN_PLL=16.9344MHz）

Parameter Symbol

MIN. TYP. MAX.

Limits

Unit Condition

<Total >
Circuit current (VDD1 USB1) IDD1USB1

- 60 90

mA *1 When USB memory is played.
Circuit current (VDD1 SD1) IDD1SD1 - 35 60 mA *1 When SD card is played.
<Digital block>
H-Level input voltage VIH VDD1*0.7 － VDD1 V *3
L-Level input voltage
H-Level output voltage1
L-Level output voltage1
L-Level output voltage2
H-Level output voltage3
L-Level output voltage3
H-Level output voltage4
L-Level output voltage4

VIL DVSS － VDD1*0.3 V *3

VOH1 VDD1-0.4 － VDD1 V IOH=-1.6mA, *4

VOL1 0 － 0.4 V IOL=1.6mA. *4
VOL2 0 － 0.4 V IOL=3.6mA, *5

VOH3 VDD1-0.4 － VDD1 V IOH=-0.6mA, *6

VOL3 0 － 0.4 V IOL=0.6mA, *6

VOH4 VDD1-1.0 － VDD1 V IOH=-0.6mA, *7

VOL4 0 － 1.0 V IOL=0.6mA, *7

<USB-HOST >

H-Level input

VIHUSB VDD1*0.6 － VDD1 V *8

voltage

L-Level input voltage

VILUSB AVSSC － VDD1*0.3 V *8
Output impedance(H) ZOH 22.0 45.0 60.0 Ω *8
Output impedance(L) ZOL 22.0 45.0 60.0 Ω *8

H-Level output

VOHUSB VDD1-0.5 － VDD1 V *8

voltage

L-Level output voltage

VOLUSB 0 － 0.3 V *8
Rise/Fall time Tr/Tf － 11 － ns *8, Output capacity 50pF
Voltage of crossing point VCRS － VDD1/2 － V *8, Output capacity 50pF
Range of differential input VDIFF 0.8 － 2.5 V *8
Differential input sensitivity VSENS 0.2 － － V *8
Pull-down resistance RPD 14.25 20.0 24.8 kΩ *8
<Audio DAC>
Distortion rate THD － 0.005 － % 1kHz, 0dB, sine, *9
Dynamic range DR － 90 － dB 1kHz, -60dB, sine, *9
S/N ratio S/N － 95 － dB *9
Max output level VSMAX － 0.67 － Vrms 1kHz, 0dB, sine, *9

*1 3.3V system I/O, Analog Power supply(VDD1), 1kHz, 0dB, sine-wave playing
*3 1, 3, 4-9, 14-23, 29, 31-32, 34-35, 61-63, 71-76 pin
*4 9, 11-12, 14-15, 18-20, 30, 36, 58-60, 61-67, 69-70 pin
*5 2, 3, 17 pin
*6 24-26, 28, 29 pin
*7 49 pin
*8 41, 42 pin
*9 53, 55 pin

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2. Block diagram

Technical Note

60 59 58 57 56 55 54 53 52 51 50 49 48 47 46 45 44 43 42 41

LED_ERROR/

SS_CS

LED_PLAY/

SS_DI

LED_PSD/

SS_CLK

LED_PUSB/

SS_DO

LED_ACCESS/

LRCKO

LED_RANDOM

/BCKO

LED_REPEAT

/SDATAO

DVDDIO

TEST13

TEST14

SEL_USB

TEST4

TEST3

TEST2

TEST1

TMODE

DVSS

DVDD_M1

DVDDIO

TEST0

61

62

63

64

65

66

67

68

69

70

Audio DAC

Sound Effecter

AAC / WMA / MP3

Decoder

SIO IF

71

72

73

74

75

76

77

78

79

80

LDO

Controller

MP3

Encoder

CD-ROM IF

PLL

Controller

FAT

File system

System

Controller

USB
PHY

USB

IPL

SD I/F

Controller

I2C I/F

Controller

40

39

38

37

36

35

34

33

32

31

30

29

28

27

26

25

24

23

22

21

AVDDC

ATEST1

DVDD_M2

DVSS

TEST10

TEST9

TEST8

DVDDIO

TEST7

TEST6

TEST5

TEST/CL
K12MO

FL_CS

DVSS

SD_CS

SD_DI

SD_CLK

SD_DO

SD_CON

SD_WP

1 2 3 4 5 6 7 8 9 1011121314151617181920

Block diagram

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Technical Note

3. Description of Terminals

STAND ALONE MODE (MODE1) SLAVE MODE (MODE2)

No Pin Name

1 RESETX A I PU

2 TEST15 I O *3

3 TEST16 I I/O *3

4 SEL_SLAVE B I

SEL_MP3/

5

INREQI

SEL_DOUT/

6

LRCKI

SEL_VOL/

7

BCKI

SEL_APLAY/

8

SDATAI

SEL_UTPKT/

9

BFULLO

10 DVSS - - - GND terminal - - GND terminal

11 IRPTO B O - OPEN O - Connection interrupt output terminal

12 SEARCH B O - OPEN O - Search flag output terminal

13 DVDDIO - - IO power (VDD1) terminal - - IO power (VDD1) terminal

KEY_ROW1/

14

MCHNG

KEY_ROW2/

15

BUSY

KEY_ROW3/

16

SCL

KEY_ROW4/

17

SDA

KEY_COL1/

18

A0

KEY_COL2/

19

A1

KEY_COL3/

20

SEL_I2C

21 SD_WP B I PU SD card I/F WP detection terminal ← ← ←

22 SD_CON B I PU

23 SD_DO B I - SD card I/F data input terminal ← ← ←

24 SD_CLK B O - SD card I/F clock output terminal ← ← ←

25 SD_DI B O - SD card I/F data output terminal ← ← ←

26 SD_CS B O - SD card I/F chip select output terminal ← ← ←

27 DVSS - - - GND terminal - - GND terminal

28 FL_CS B O -

TEST/

29

CLK12MO

30 TEST5 B O - Test mode terminal. Use it as OPEN. ← ← ←

31 TEST6 H I -

32 TEST7 H I -

33 DVDDIO - - - IO power (VDD1) terminal - - IO power (VDD1) terminal

IO

IO PU Function IO PU Function

Cir

H: Release RESET,
L: RESET

Test mode terminal
Pull it up at VDD1 power.

Test mode terminal
Pull it up at VDD1 power.

PU

H: STAND ALONE, L:SLAVE ← ← ←

*1

B I

B I

B I

B I

B I

B Ｉ PU KEY ROW１ key command input O - File play end flag output terminal

B Ｉ PU KEY ROW２ key command input O -

I Ｉ *3 KEY ROW３ key command input I *3 I2C slave clock input terminal

I Ｉ *3 KEY ROW４ key command input I/O *3 I2C slave data I/O terminal

B Ｏ -

B Ｏ -

B Ｏ -

B I PU

PU *1H: PLAY MP3 ONLY,

L: PLAY MP1,MP2 and MP3

PU *1H: ANALOG DAC Output,

L: Digital Output

PU *1H: Volume controll valid,

L: Volume control invalid

PU *1H: Auto Play OFF ,

L: Auto Play

PU *1H: Normal Operation

L: USB Test Packet Output

KEY COLUMN1
Key command output

KEY COLUMN2
Key command output

KEY COLUMN3
Key command output

SD card I/F connection detection
terminal

Serial Flash ROM chip select output
terminal

Test mode terminal.
Pull it up at VDD1 power.

Test mode terminal
Pull it up at VDD1 power.

Test mode terminal
Pull it up at VDD1 power.

← ← ←

O *3 ←

I/O *3 ←

I - Input data valid terminal

I - Digital Audio channel clock input terminal

I - Digital Audio bit clock input terminal

I - Digital Audio channel data input terminal

O - Input buffer full flag output terminal

Command analysis BUSY output
temrinal

I - I2C slave address setting terminal

I - I2C slave address setting terminal

I -

← ← ←

← ← ←

O - 12MHz CLK Output.

← ← ←

← ← ←

Test mode terminal.
Pull it up at VDD1 power.

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Technical Note

34 TEST8 H I -

35 TEST9 H I -

36 TEST10 B O -

37 DVSS - - - GND terminal - - GND terminal

38 DVDD_M2 - - -

39 ATEST1 - O - USB test terminal (OPEN) ← ← ←

40 AVDDC - - - USB power (VDD1) terminal ← ← ←

41 USB_DM C I/O - USB D-I/O terminal ← ← ←

42 USB_DP C I/O - USB D+ I/O terminal ← ← ←

43 AVSSC - - - USB GND terminal ← ← ←

44 REXTI D O -

45 VOREFI - O - USB test terminal (OPEN) ← ← ←

46 VSS_PLL - - - PLL GND terminal. ← ← ←

47 TEST_PLL1 - I - PLL test terminal. (OPEN) ← ← ←

48 XIN_PLL E I -

49 XOUT_PLL E O -

50 TEST_PLL2 - I -

51 VDD_PLL - - - PLL power (VDD1) terminal. ← ← ←

52 DAVSS - - - Audio DAC GND terminal ← ← ←

53 RDACO F O - Audio DAC Rch line output terminal ← ← ←

54 VCDACO F O -

55 LDACO F O - Audio DAC Lch line output terminal ← ← ←

56 DAVDD - - - Audio DAC power (VDD1) terminal ← ← ←

57 DVSS - - - GND terminal - - GND terminal

58 AMUTE G O -

59 TEST11 B O - Test mode terminal. Use it as OPEN. ← ← ←

60 TEST12 B O - Test mode terminal. Use it as OPEN. ← ← ←/Master Clock output(16.9344MHz)

LED_ERROR/

61

SS_CS

LED_PLAY/

62

SS_DI

LED_PSD/

63

SS_CLK

LED_PUSB/

64

SS_DO

LED_ACCESS/

65

LRCKO

LED_RANDO

66

M/BCKO

LED_REPEAT/

67

SDARAO

68 DVDDIO - - - IO power (VDD1) terminal - - I/O power (VDD1) terminal

69 TEST13 B O - Test mode terminal Use it as OPEN. ← ← ←

70 TEST14 B O - Test mode terminal Use it as OPEN. ← ← ←

71 SEL_USB B I PU Preference detection device select ← ← ←

B O - [LED] Error LED ON output Ｉ PU SIO Slave CS input terminal

B O - [LED] Play LED ON output I - SIO Slave DATA input terminal

B O - [LED] SD device select LED ON output I - SIO Slave clock input terminal

B O -

B O - [LED] Device access LED blink output O -

B O - [LED] Randum play LED ON output O - [BCKO] Digital Audio bit clock output

B O - [LED] Repeat LED ON output O - [DATAO] Digital Audio data output

Test mode terminal
Pull it up at VDD1 power.

Test mode terminal
Pull it up at VDD1 power.

Test mode terminal
(IPL ERROR status). Use it as OPEN.

CORE power (VDD2) monitor terminal
Short-circuit to DVDD_M1.
Connect bypass capacitor.

USB reference voltage output terminal
Connect to AVSSC terminal using USB
bias resistor (12kΩ).

X'tal (16.9344MHz) connection input
terminal.

X'tal (16.9344MHz) connection output

terminal.

PLL test terminal.
Pull it up at VDD1 power.

Audio DAC reference voltage output
terminal

Audio mute output (H: Mute OFF,
L: Mute ON) terminal

[LED] USB device select LED ON
output

← ← ←

← ← ←

← ← ←

CORE power (VDD2) monitor terminal

- -

← ← ←

← ← ←

← ← ←

← ← ←

← ← ←

← ← ←

O - SIO Slave DATA output terminal

Short-circuit to DVDD_M1.
Connect bypass capacitor.

[LRCKO] Digital Audio channel clock

output, SPDIF output

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Technical Note

*1 (H: USB, L: SD)

72 TEST4 H I -

Test mode terminal
Pull it up at VDD1 power.

← ← ←

Test mode terminal

73 TEST3 H I -

(IPL WRITE MODE1)

← ← ←

Pull it up at VDD1 power.

Test mode terminal

74 TEST2 H I -

(IPL WRITE MODE2)

← ← ←

Pull it up at VDD1 power.

75 TEST1 H I -

76 TMODE H I -

Test mode terminal
Pull it up at VDD1 power.

Test mode terminal
Connect it to GND.

← ← ←

← ← ←

77 DVSS - - - GND terminal - - GND terminal

78 DVDD_M1 - - -

CORE power (VDD2) monitor terminal
Connect it to bypass capacitor.

← ← ←

79 DVDDIO - - - IO power (VDD1) terminal - - IO power (VDD1) terminal

80 TEST0 - I -

Test mode terminal
Connect it to GND.

← ← ←

*1 Pull-Up turns OFF when L is input.
*2 In STAND ALONE MODE (MODE1):

It turns OFF when ANALOG DAC output is selected (SEL_DOUT=H).

It performs I2S format audio output when Digital output is selected (SEL_DOUT=L).

*3 An external pull-up resistor is required because of Open Drain IO.

4. Terminal equivalent circuit diagram

A B C D

DVDDIO

DVDDIO

DVDDIO

DVDDIO

D
P

D
M

AVDDC

AVDDC

XIN

DVSSIO

VDD_PLL

VSS_PLL

15KΩ

AVSSCAVSSC

AVSSC

DVSSIO

15KΩ

DVSSIO

E F G H

VDD_PLL

XOUT

VSS_PLL

DAVDD

DVDDIO

DAVSS

DVSSIO

DVDDIO

DVSSIO

I

I/O terminal equivalent circuit diagram

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5. I/O Signal Specifications

5.1 Clock and Reset

Clock

Clock name I/O Function Remarks

XIN_PLL I X'tal (16.9344MHz) connection input terminal

XOUT_PLL O X'tal (16.9344MHz) connection terminal

Reset

Signal name I/O Function Remarks

RESETX I System reset input terminal

Please release the reset signal continue L input for more than 100 us after clock input from the oscillation I/O terminal
becomes stable. (See Figure 5.1.)

Power
supply

XIN_PLL

RESETX

Item Code

W aitin g tim e fo r

oscillation stabilization

min typ max

clk

f

tRS T X

Figure 5.1 Reset Timing

Rating

Technical Note

Unit Remarks

Clock frequency f

Reset L interval t

16.9302 16.9344 16.9386 MHz

CLK

100 - - us

RSTX

5.2 SEL_SLAVE
MODE1/MODE2 selection input signal

Signal name I/O Function Remarks

SEL_SLAVE I Selection between MODE1 and MODE2 H: MODE1, L: MODE2

SEL_SLAVE allows you to select MODE1 (Stand-alone Mode) or MODE2 (Slave Mode).
SEL_SLAVE is set only at power ON. Note that selection change will be ignored after power ON.

5.3 SEL_MP3

MPEG Audio Layer 1, 2 and 3 play selection signal

Signal name I/O Function Remarks

SEL_MP3 I MPEG Audio Layer selection H: Only MP3 is playable. L: MP1,MP2 and MP3 are playable.

SEL_MP3 allows you to select the layer of MPEG audio to be played. It is available in MODE1 only.
Enter L to make all the files having file extensions of mp1, mp2 and mp3 playable.
Enter H to play mp3 file only.
SEL_MP3 is set only at power ON. Note that selection change will be ignored after power ON.

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p

5.4 SEL_DOUT

Audio output selection signal

Signal name I/O Function Remarks

SEL_DOUT I Audio output selection H: Line output, L: I2S three-line serial output

SEL_DOUT selects the audio output signal. It is available in MODE1 only.
Audio outputs in each MODE are shown in Table 5.4.1 “Audio Output”.
Output formats used in each MODE are shown in Table 5.4.2 “I2S_fs”.
See Chapter 6 for commands.
Because TEST terminal is an output terminal, use it as OPEN.

Pin.

53 Line Out Rch HiZ Line Out Rch HiZ HiZ

55 Line Out Lch HiZ Line Out Lch HiZ HiZ

65 LED_ACCESS I2S LR CLOCK TEST terminal LR CLOCK SPDIF

66 LED_RANDOM I2S BIT CLOCK TEST terminal BIT CLOCK TEST terminal

67 LED_REPEAT I2S LRDATA TEST terminal LRDATA TEST terminal

SEL_DOUT is set only at power ON. Note that selection change will be ignored after power ON.

5.5 SEL_VOL

Volume control selection signal

Signal name I/O Function Remarks

SEL_VOL I Volume control selection H: Volume control ON, L: Volume control OFF

SEL_VOL allows you to select volume control ON/OFF. It is available in MODE1 only.
When SEL_VOL=H, volume control becomes enabled.
The initial value is –25.6dB at power ON.
When SEL_VOL=L, volume control becomes disabled. Audio output is fixed to 0 dB.
Figure 5.5 shows the relationship between audio outputs and volume steps.
SEL_VOL is set only at power ON. Note that selection change will be ignored after power ON.

Table 5.4.1 Audio Output

MODE1 MODE2

SEL_DOUT=H SEL_DOUT=L ANALOG

Table 5.4.2 I2S_fs

MODE1 32fs I2S

MODE2 Selectable by commands

Technical Note

DIGTAL

SPDIF OFF SPDIF ON

0

-10

-20

-30

Initial value: -25.6dB

-40

Audio output (dB)

-50

(when SEL_VOL=H)

↓-∞

-60
02468101214161820222426283032

Volume ste

Figure 5.5 Volume Step Function

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5.6 SEL_APLAY
Auto play selection signal at power ON and at device recognition

Signal name I/O Function Remarks

SEL_APLAY I

SEL_APLAY selects whether the audio data in the memory is to be automatically played when a memory device (USB
memory or SD card) is inserted at power ON or when the system recognizes the memory device inserted. SEL_APLAY
is selectable in MODE1 only.
In MODE2, the operation stops after device recognition. Use a command to select the operation.

5.7 SEL_UTPKT
USB test packet

Signal name I/O Function Remarks

SEL_UTPKT I USB test packet send H: Invalid, L: USB test packet send

When L is input in SEL_UTPKT at power ON, test packet signals are output from USB_DP and USB_DM terminals.
SEL_UTPKT is available in MODE1 only.
Test packet signals are continuously output until the power is turned OFF. You can use this signal to evaluate the
USB terminal. In other cases, you can use it with Pull-up.

5.8 USB I/F
USB I/O interface

Signal name I/O Function Remarks

USB_DP I/O USB D+ I/O terminal -

USB_DM I/O USB D- I/O terminal -

REXTI O USB bias resistor connection terminal Connect a resistor of 12 kΩ±1% to GND.

This interface communicates with the USB device using USB_DP and USB_DM differential signals.
REXTI terminal is used to connect to the bias resistor in the USB-PHY block.

5.9 SD I/F
SD memory card SPI interface

Signal name I/O Function Remarks

FL_CS O Serial flash ROM chip select -

SD_CS O SD chip select -

SD_CLK O SPI clock -

SD_DI O SPI data input -

SD_DO I SPI data output -

SD_CON I SD card connect detection terminal

SD_WP I SD card write-protect detection terminal

This interface connects to the SD memory card slot to communicate with the SD memory device.
Since the SD memory card slot needs to detect the insertion status of the SD memory device and the write-protect
status, be sure to use the slot having the SD memory card insertion status detection terminal and the WP terminal and
connect it to the terminals. The SD_CON terminal is pulled up within the device and detects “SD card connect” when
L is input. The SD_WP terminal is pulled up within the device and detects “SD card no-write-protect” when L is input.
SD I/F is also used as an external serial flash ROM I/F.

5.10 Audio line output
Audio line output

Signal name I/O Function Remarks

LDACO O Lch audio line output -

RDACO O Rch audio line output -

This is a line output of decoded music data.

Auto play selection at device
recognition

Technical Note

H: Stop after device recognition,
L: Play after device recognition

H: Do not detect SD card connect,
L: Detect SD card connect

H: SD write-protect valid,
L: SD write-protect invalid

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Technical Note

In MODE1, the output turns ON when SEL_DOUT terminal is selected. In MODE2, it turns ON when line output is
selected by a command.

5.11 MUTE control output
Audio MUTE

Signal name I/O Function Remarks

AMUTE O Audio mute control terminal H: At audio output , L: At mute

This control terminal is used to mute audio output when power is ON or in the silence mode such as FF or FB.
It outputs H at audio output and L at mute.
Figure 5.11 shows the operation waveforms.

At start of play At stop of play

AMUTE

23 ms at 0dB

LDACO, RDACO

Figure 5.11 Waveform at Audio Mute

5.12 Serial audio output
Three-line serial audio interface

Signal name I/O Function Remarks

LRCK O LR clock output (fs=44.1kHz) -

BCK O Bit clock output -

DATA O Data output -

This is a serial audio output interface terminal. In MODE1, it becomes enabled by inputting L to SEL_DOUT terminal.
In MODE2, it becomes enabled by using the appropriate command.
When serial audio output is selected, the data is output in I2S format of 32fs in MODE1. In MODE2, the output format
can be selected from the EIAJ format or I2S format of 32fs, 48fs or 64fs.
Figures 5.12.1, 5.12.2, 5.12.3, 5.12.4, 5.12.5 and 5.12.6 show the output formats.

LRCK

BCK(32fs)

DATA

LRCK Left Channel Right Channel

BCK(48fs)

DATA

LRCK

BCK(64fs)

DATA

Left Channel

0 15 14 13 12 11 10 9 8 7 6 5 4 3 2 11 0

Figure 5.12.1 I2S Output Timing (32fs)

15 14 12 11 10 9 8 7 6 5 4 3 2 1 0 15 1413

Figure 5.12.2 I2S Output Timing (48fs)

Left Channel Right Channel

13 1215 14 11 8 710 9 6 3 25 4 1 0 13 1215 14

Figure 5.12.3 I2S Output Timing (64fs)

23 ms at 0dB

Right Channel

15

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Technical Note

LRCK

BCK(32fs)

DATA

Left Channel

Right Channel

1415 14 13 12 11 10 9 8 7 6 5 4 3 2 10 0

15

Figure 5.12.4 EIAJ Output Timing (32fs)

LRCK Left Channel Right Channel

BCK(48fs)

DATA

15 14 12 11 10 9 8 7 6 5 4 3 2 1 01 0 13

Figure 5.12.5 EIAJ Output Timing (48fs)

LRCK

BCK(64fs)

DATA

Left Channel Right Channel

13 1215 14 11 8 710 9 6 3 25 4 1 01 02

Figure 5.12.6 EIAJ Output Timing (64fs)

5.13 SPDIF output
Digital audio interface

Signal Name I/O Function Remarks

SPDIF O Digital audio output -

SPDIF output become enabled by setting it in MODE2 using the appropriate command.
Figure 5.13 shows the digital audio signal output format.

034 1112 2728293031

Source code

Synchronous
preamble

Source code(4-31)

SPDIF output

Synchronous

preamble

Synchronous

preamble

0 0 0 0 0 0 0 0 1 0 1 1 0 1

all 0 Audio data(16bit)

(B pattern)

(M pattern)

(W pattern)

LSB MSB

V U C P

Figure 5.13 SPDIF Output Format

One sub frame of SPDIF consists of synchronous preambles, 16-bit audio data, V bit (validity flag), U bit
(user data), C bit (channel status) and P bit (parity bit).
Output rate is fixed to 1X speed.
SPDIF outputs synchronous preambles (source code 0-3) as they are, and other elements (source code
4-31) as the biphase output. While the operation stops, L output is enabled.
Synchronous preambles and C bit use 32 frames (≈4.4 ms) for one cycle. The data formats are shown in
Tables 5.13.1 and 5.13.2. V bit is fixed to L. U bit uses 98 frames (≈13.3 ms) for one cycle.

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Table 5.13.1 Synchronous Preamble Pattern

L0 R0 L1 R1 L2 R2 L3 R3 L4 R4 L5 R5

0 B W M W M W M W M W M W

1 M W M W M W M W M W M W

: : : : : : : : : : : : :

31 M W M W M W M W M W M W

Table 5.13.2 C Bit Format

L0 R0 L1 R1 L2 R2 L3 R3 L4 R4 L5 R5

0 0 0 Copy 0 0 0

1 0 0 1 0 0 0

2 0 0 0 Lbit 0 0

3 0 0 1 0 0 1 0 0

4 0 0 0 0 0 0

5 0 0 0 0 0 0

: : : : : : :

31 0 0 0 0 0 0

Table 5.13.3 U Bit Format

L0 R0 L1 R1 L2 R2 L3 R3 L4 R4 L5 R5

0 0 0 0 0 0 0 0 0 0 0 0 0

1 0 0 0 0 0 0 0 0 0 0 0 0

2 1 0 0 0 0 0 0 0 0 0 0 0

3 1 0 0 0 0 0 0 0 0 0 0 0

: : : : : : : : : : : : :

97 1 0 0 0 0 0 0 0 0 0 0 0

P bit is set to 1 if the number of “1” contained in source codes 4-30 is odd, and set to 0 if the number is even.
Therefore, the number of source codes to be set to 1 for one data must be even, SPDIF ends with L output,
and preamble output always starts in the same direction.

Technical Note

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5.14 KEY input I/F

3x4 matrix command I/O

Signal name I/O Function Remarks

KEY_ROW1 I

KEY_ROW2 I -

KEY_ROW3 I External pull-up resistor is required.

KEY_ROW4 I External pull-up resistor is required.

KEY_COL1 O -

KEY_COL2 O -

KEY_COL3 O -

Configure the circuit of the matrix signal terminal for KEY commands as shown in Application Circuit Diagram in
Figure 5.14.
The interface performs the operations for KEY pressed in this circuit.
Chapter 6 in this document details each operation.

Technical Note

-

KEY matrix I/O signals

5.15 I2C command interface
Slave I2C serial interface

Signal name I/O Function Remarks

SCL I I2C interface clock input External pull-up resistor is required.

SDA I/O I2C interface data I/O External pull-up resistor is required.

A0 I Slave address selection terminal Slave address [0] bit setting terminal

A1 I Slave address selection terminal Slave address [1] bit setting terminal

This is an I2C serial interface terminal to communicate with the microcomputer (master).
The interface becomes enabled by inputting L in SEL_SLAVE terminal (in MODE2).
It supports slave I2C operations.

5.15.1 I2C protocol
When the I2C bus is in the IDLE state, SDA and SCL are set to H by the external Pull-up resistor.
To start communications, the master sets SDA to L while SCL set to H (Start condition). To finish

communications, the master sets SDA to H while SCL set to H (Stop condition). During transfer, the master
changes SDA only while SCL is L. Figure 5.15.1 shows Start condition, Stop condition of I2C.

KEY_

ROW1

REPEAT RANDOM CHG_DEV+10

VOL+ FOL- FOL+VOL-

KEY_

ROW2

PLAY/

PAUSE

STOP

KEY_

ROW3

KEY_

ROW4

FFFB

KEY_

COL1

KEY_

COL2

KEY_

COL3

Figure 5.14 KEY Matrix Application Circuit Diagram

SCL

SDA

Start
condition

12

MSB

8

LSB ACK

9 1

ACK

9

Stop
condition

Figure 5.15.1 I2C Start and Stop Conditions

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5.15.2 Slave address

I2C bus slave addresses support the 7-bit addressing mode. By inputting to terminals A0 and A1, the bus slave
address can be selected as shown in Table 5.15.2. Figure 5.15.2 shows the slave address transfer format.

5.15.3 Protocol to write from the master

When sending commands from the master using the I2C bus, be sure to conform to the transfer protocol shown
in Figure 5.15.3. For details on each command, see Chapter 6.

5.15.4 Protocol to read to the master

When sending the received data from the slave to the master using the I2C bus, be sure to conform to the transfer
protocol shown in Figure 5.15.4.1. First, transfer the status read command (step1). Then, input SCL clock of
required bytes in step2 to read the status.
If the device status is BUSY when receiving the device status or the data within the memory, the I2C bus may be
occupied by the device in BUSY. This LSI transfers the data to the master to avoid such occupation of the bus.
However, as the BUSY status still exists internally, the proper data may not be transferred in BUSY. To cope with
this situation, the first byte of the transfer data (step2) is used to judge whether the transferred data is valid or
invalid. After addressing from the master to the slave, if the 0 bit of the first byte of the transfer data immediately
after requiring the data transfer is 0, the data transferred from the slave is valid. If the 0 bit of the first byte is 1, it
shows the BUSY status. Thus, judge all the transferred data to be invalid. If this happens, retry Step1 to send
commands to read the status.
The first byte of the transferred data (step2) can be readable as the BUSY byte even without sending the status
read command (step1). In addition, internal statuses other than BUSY shown in Table 5.15.4 can be read.

S A6 A5 A4 A3 A2 A1 A0 R/W ACK

Start

condition

Slave Address

R / W = Read / Write Pulse

ACK = Acknowledge

sent by

slave

Figure 5.15.2 Slave Address Transfer Format

Table 5.15.2 Settable Slave Addresses

MSB

A6

A5 A4 A3 A2

A1

terminal

LSB

A0

terminal

1 0 0 0 0 0 0
1 0 0 0 0 0 1
1 0 0 0 0 1 0
1 0 0 0 0 1 1

S Slave Address A Data(8bit)R/W A Data(8bit) A Data(8bit) PA/A

"0"(write)

From Master to Slave

From Slave to Master

A = Acknowledge(SDA low)
A = No Acknowledge(SDA high)
S = Start Condition
P = Stop condition

Figure 5.15.3 Command Send Protocol

Technical Note

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Figure 5.15.4.2 shows the relationship between the transferred data and BUSY.
* For details on BUSY, see 5.16.

Table 5.15.4 BUSY Byte Structure

bit STATUS

7 0
6 0
5 0
4 PRECOM
3 IRPTO
2 SEARCH
1 MCHNG
0 BUSY

Step1

S Slave Address A Data(8bit)R/W A Data(8bit) PA/A

Step2

S Slave Address A BUSY(8bit)R/W A Data(8bit) P A

From Master to Slave

From Slave to Master

"0"(write)

Data(8bit) A

"1"(read)

A = Acknowledge(SDA low)
A = No Acknowledge(SDA high)
S = Start Condition
P = Stop condition

Figure 5.15.4.1 Status Reception Protocol

Technical Note

Step1 command S Slave Address A 0xFF A Data(8bit) P AData(8bit) AR

I2C

BUSY

Step1 command S Slave Address A 0x00 A Data(8bit) P AData(8bit) AR

BUSY byte

BUSY byte for Status

Figure 5.15.4.2 Relationship between Transferred Data and BUSY

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Technical Note

5.15.5 I2C Bus line timing

SDA and SCL bus-line characteristic (Unless specified, Ta=25℃, Vcc=3.3V)

Parameter Code Min. Max. Unit

1 SDA, SCL H input voltage VIH VDD*0.7 VDD V

2 SDA, SCL L input voltage VIL DVSS VDD*0.3 V

3 SDA H output voltage VOH VDD-0.4 VDD V

4 SDA L output voltage VOL 0 0.4 V

5 SCL clock frequency fSCL 0 400 kHz

Bus-free-time between "Stop" condition and

6

"Start" condition

Hold time for "Start" condition

7

After this, the first clock pulse is generated.

tBUF 1.3 － us

tHD;STA 0.6 － us

8 LOW status hold-time of SCL clock tLOW 1.3 － us

9 HIGH status hold-time of SCL clock tHIGH 0.6 － us

10 Data-hold-time tHD;DAT 0＊ － us

11 Date-setup-time tSU;DAT 100 － ns

12 Rising time of SDA and SCL signal tR 20+0.1*Cb 300 ns

13 Fall time of SDA and SCL signal tF 20+0.1*Cb 300 ns

14 Setup time of "Stop" condition tSU;STO 0.6 － us

15 Capacitive load of each bus-line Cb － 400 pF

The above-mentioned numerical values are all the values corresponding to V

IH min

and V

IL max

level.
*To exceed an undefined area on falling edged of SCL, transmission device should internally offer the hold-time of 300ns or
more for SDA signal (V

of SCL signal).

IH min

Because the "Repeated Start" condition to send "Start" condition without sending "Stop" condition doesn't correspond, after
sending "Start" condition, always send "Stop" condition.

Neither terminal SCL nor terminal SDA correspond to 5V tolerant.

SDA

t

BUF

t

LOW

t

t

R

F

SCL

t

HD;STA

SP

t

HD;DAT

t

HIGH

t

SU;DAT

t

SU;STO

P

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5.16 BUSY
BUSY status detection output

Signal name I/O Function Remarks

BUSY O BUSY status detection output signal H: Busy, L: Not Busy

This is output to indicate that the LSI is in the BUSY status.
A BUSY signal outputs H untill analyzing a command from the master and starting the command operation.
This LSI ignores command input during BUSY.

5.17 MCHNG
Tune number change detection output

Signal name I/O Function Remarks

MCHNG O Tune number change detection output signal H: During playing, L: At the end or stop of tune

This signal outputs the information which tells that the file within the memory is being played or the file to be
played is changed.
Precisely, the signal outputs H during the internal decode sequence operation, and L at stop of the operation.

5.18 SEARCH
SEARCH status detection output

Signal name I/O Function Remarks

SEARCH O SEARCH status detection output signal H: SEARCH, L: Not SEARCH

This is output to indicate that the LSI is in the SEARCH status.
A SEARCH signal becomes H at the time of memory mount, file search, TAG analysis and TOC analysis.
The LSI ignores command input during SEARCH. However, it can accept only ABORT, STOP and staus read
commands even during SEARCH and can execute them command.

5.19 IRPTO
Interrupt output to microcomputer

Signal name I/O Function Remarks

IRPTO O Interrupt output to microcomputer H: Interrupt, L: Not Interrupt

This is output to indicate that the LSI is now requiring interruption to the microcomputer.
Change from L to H shows that an interruption has occurred.

Technical Note

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t

Technical Note

5.21 CD INPUT interface
Three-line serial audio input interface

Signal name I/O Function Remarks

LRCKI I LR clock input -

BCKI I BIT clock input -

SDATAI I Data input -

INREQI I Input data valid H: Input data valid, L: Input data invalid

BFULLO O Internal buffer FULL output H: Internal buffer FULL, L: Not FULL

This is a three-line serial audio input interface terminal from a CD.
The interface is available in MODE2.
The data input from the interface is encoded in the MP3 or WAV format and written to the memory.
4X max input speed supports. However, since encoding speed is 2X max, more than in 2X input speed, handling
of a buffer FULL output generates it.
(Buffer FULL outputs depend also on a write-in speed for every memory.)

5.21.1 Input format
You can select the input format from the EIAJ format and I2S format of 16 bits.
You can select the BIT clock from 32fs, 48fs and 64fs.
You can select the input sampling frequency from 32 kHz, 44.1 kHz and 48 kHz.
Perform the required settings using commands before inputting data.

LRCK

BCK(48fs)

DATA

INREQI

Tlrck1

Tda1

15 14 12 11 10 9 8 7 6 5 4 3 2 1 0 15 1413

Tinreqi1

Tbck1 Tbck2

Tda2

Left Channel Right Channel

Tbck

Tlrck2

Figure 5.21.1.1 I2S Input Timing (48fs)

LRCK Left Channel Right Channel

BCK(48fs)

DATA

LRCKI

BCKI

SDATAI

INREQI

15 14 12 11 10 9 8 7 6 5 4 3 2 1 01 0 13

Figure 5.21.1.2 EIAJ Input Timing (48fs)

iming(ns)
Item sign MIN TYP MAX
setup Tlrck1 41 Tbck/2 ­hold Tlrck2 41 Tbck/2 ­L section Tbck1 41 Tbck/2 ­H section Tbck2 41 Tbck/2 ­setup Tda1 41 Tbck/2 ­hold Tda2 41 Tbck/2 ­setup Tinreqi1 200 - -

CD I/F input timing regulation

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5.21.2 INREQI
INREQI inputs H from the microcomputer when the input data is valid.
When INREQI＝H and BFULLO＝L, the IC fetches the input data to the internal buffer.

5.21.3 BFULLO
BFULLO outputs H when the internal buffer becomes FULL because the data input speed is too fast to manage
the internal encoding.
When BFULLO=H, the microcomputer obtains the current play position of the CD and set to INREQI=L. After
finding BFULLO=L, reduce the CD rotation speed and then perform comparison connection or retry encoding
starting from the top of the tune.
When INREQI＝H and BFULLO＝L, the IC fetches the input data to the internal buffer.

5.22 Serial interface
Slave SPI serial interface

Signal name I/O Function Remarks

SS_CS I Slave SPI chip select input -

SS_CLK I Slave SPI clock input -

SS_DI I Slave SPI data input -

SS_DO O Slave SPI data output -

This is a slave serial SPI interface terminal.
The interface is available in MODE2. It supports the SPI format (MODE0,1,2 and 3).
You can select the data width from 8, 16 and 32 bit.
An input clock is 2MHz at the maximum.
The interface is available to read and write the specific file data from/to the memory.

Technical Note

Figure 5.22.1 SPI MODE0 Serial Timing

timing(ns)
Item sign MIN TYP MAX
setup Tcs1 500 - -

SS_CS

SS_CLK

SS_DI

SS_DO

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hold Tcs2 250 - ­H section Tcsh 0 - ­L section Tclk1 250 - ­H section Tclk2 250 - ­pulse width controlled - - - 100
setup Tdi1 100 - ­hold Tdi2 100 - ­output delay Tdo1 - 150 ­output delay Tdo2 - 150 -

SPI I/F input timing regulation

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Technical Note

5.23 SEL_USB

Signal name I/O Function Remarks

Figure 5.22.2 SPI MODE1 Serial Timing

Preference device detection selection signal

SEL_USB I Preference device detection selection signal H: USB, L: SD

The signal selects which device should be detected with the highest priority at power ON.
When SEL_USB=H, the microcomputer detects the preference device from USB. When SEL_USB=L, it detects
the preference device from SD.
SEL_USB is set only at power ON only. Note that selection change will be ignored after power ON.

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6．Functions and Operations

6.1 File search

6.1.1 Function

- The file search function supports file system of FAT32, FAT16 and FAT12. (NTFS is not supported.)

- The number of maximum playable files per folder follows the specification of FAT.

The number of files described above includes folders and files other than playable files (WAV/AAC/WMA/MP3).
Thus, if non-playable files or folders contain in the above folders and the number of total files exceeds the
maximum limit, all the playable files may not be played.

- Less than 100 files in the order of FAT within each folder are sorted according to UNICODE. More than 100
files, if any, will be sorted in the FAT order. The same rule is applied when sorting sub-folders. More than 100
sub-folders, if any, will be sorted in the FAT order. In MODE2, a sorting function can be selected valid or invalid
with a command. In MODE1, a sorting function is always effective.

- The folder hierarchies up to 16 hierarchies whose full path including the file name is within 260 caracters can be
searched.

6.1.2 Playable file
The playable file extension is *.WAV for the WAV file, *.M4A, *.3GP and *.MP4 for the AAC file, *.ASF and *.WMA
for the WMA file, and *.MP3, *.MP2 and *.MP1 for the MP3 file. (There is no distinction between upper case
letters and lower case letters.) Note that the file operation differs in the following cases
[1] SEL_MP3: For details, see SEL_MP3.
[2] Attribute: Files with hidden attributes are also playable. Files with system attributes cannot be played.
[3] File name: The file name, including its size, does not depend on playability.
[4] File size: A file with file size "0" is not recognized as a playable file.

6.1.3 File playing sequence

The file playing sequence depends on the following rules when sort function valid. See Figure 6.1.3.

[1] Files of 1 to 100, in the order written to FAT (FAT order) in each folder, are sorted in the order of UNICODE (see

6.1.4). Files more than 100 are played in the FAT order. The same rule is applied when sorting sub-folders.
MP3 files are sorted for MP3 which conforms to SEL_MP3. All the folders including null ones and those to
which no playable file is written are sorted. If over 100 playable files or sub-folders are contained in the folder,
they are played in the order written to the FAT directory entries.
The writing method of directory entries will not help understand the file play order because the method depends

on the OS operation at writing.
[2] When a playable file exists in the root folder (the top hierarchy), the file is to be played first.
[3] After all the playable files within the root folder have been played, playable files in the folder in the lower

hierarchy, if any, are played.
[4] If another folder exists in the lower hierarchy, playable files within this folder are played. If not, the LSI searches

other folders in the same hierarchy. If another folder exists there, the LSI plays that folder.
[5] After playing all the files, the LSI returns to the root folder as in [2] and play the files starting with the top sorted

one.

Technical Note

Table6.1.1 Maximum Playable Files per Folder

Root folder Sub folder

FAT12 512 65534
FAT16 512 65534
FAT32 65536 65534

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6.1.4 Folder/File sort
The LSI sorts the sub-folders and files in the following sequence:

[1] Obtain up to 100 sub-folders and files each in the order written to FAT within selected folder.
[2] Compare the obtained folder/file names for 14 characters (28 bytes) from the beginning in UNICODE (2-byte

character) and sort them in the ascending order. *

[3] If there are files/folders with same character strings: follow the order of MP3, WMA, AAC and WAV when the

extension is different; and, otherwise, follow the order written to FAT.
[4] 101 or more files or sub-folders follow the order written to FAT.
* The processing of the file name and the folder name is shown in the following.

1) When a LFN (long file name) entry exists, 2 bytes are treated as one character.

2) When no LFN entry exists, the SFN(short file name) entry is processed as follows.

2-a) When the first appeared character code is within the range of 0x00-0x7F (US-ASCII), the LSI treats one byte

2-b) For a case other than 2-a), practically, the LSI treat these 2 bytes as one character.

*For details on LFN and SFN, see the FAT file system specifications.

Technical Note

as one character, and adds '0x00' to the upper of the character to expand the entire character to an
UNICODE.

[Root

Folder]

E.mp3
F.mp3
G.mp3
H.mp3

J.mp3

L.mp3
M.mp3
N.mp3
O.doc
P.xls
Q.mp3

S.txt
T.txt

V.mp3
W.mp3
X.mp3
Y.mp3
Z.mp3

A.mp3
B.mp3
C.mp3

D.mp3

A_FOLDER

B_FODER

C_FOLDER

R.txt

D_FOLDER

E_FOLDER

I.mp3

K.mp3

U.mp3

Figure 6.1.3 Example of Folder/File Structure within the Memory Device

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y

y

Technical Note

Table 6.1.3 File Play Sequence for Folder/File Structure in Figure 6.1.3

Play order

1 A.mp3
2 B.mp3

3 C.mp3

4 D.mp3
5 E.mp3
6 F.mp3
7 G.mp3
8 H.mp3

9 I.mp3
10 J.mp3
11 K.mp3
12 L.mp3
13 M.mp3
14 N.mp3
15 Q.mp3 -Unplayable files are ignored.
16 U.mp3
17 V.mp3
18 W.mp3
19 X.mp3
20 Y.mp3

21 Z.mp3

6.1.5 Search within multi-drive and multi-partition
If a device is a multi-drive type, the LSI recognizes the drive having the smaller LUN (Logical Unit Number) for the
supporting FAT.

Only one drive is recognized and the other drive is not.
For the multi-partition, the LSI recognizes only the first read FAT-supported partition.
Files in other partitions cannot be read.

6.1.6 External HUB search
When the USB connector is connected to a HUB, and a FAT-supported drive is connected ahead of the HUB at
mounting the USB for this LSI, only one drive is recognized.
The LSI does not support external HUBs, it cannot detect plugging/unplugging of the drive ahead of the HUB after
the USB is mounted.

File to be

ed

pla

-The LSI first starts playing the playable
files in the root folder, if any.

-The files are played in the ascending
order of UNICODE given to each file
name.

-After playing all the playable files in the
root folder, the LSI searches folders in
the lower hierarchy.

-The folders are searched in the

ascending order of UNICODE given to
each folder name.

-After playing all the playable files

including those in A_FOLDER and in its
lower hierarchy, the LSI moves to the
hierarchy in which A FOLDER exists and
searches files.

-In this case, since no playable file exists
in D FOLDER, which is in the same
hierarchy of A_FOLDER, the LSI plays
the playable files in E FOLDER in the
further lower hierarch

Remarks

.

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6.2 Playing files

6.2.1 Function
For the files judged to be playable through the file search function, the LSI automatically switches the decoder
using the file extension and decodes these files.
Fast forward play and rewinding play operations are available.
Also, repeat play and random play are available.

6.2.2 Playable file formats

6.2.2.1 MP3 file format

This format supports MPEG Audio 1, 2, 2.5 and Layer 1, 2, 3.
It supports sample rates of 8 kHz, 16 kHz, 32 kHz, 11.025 kHz, 22.05 kHz, 44.1 kHz, 12 kHz, 24 kHz and 48kHz.
It supports bit rates of 8 to 320kbps and VBR (Variable Bit Rate).

6.2.2.2 WMA file format

This format supports WMA Ver.9 Standard.
It supports sample rates of 8 kHz, 16 kHz, 32 kHz, 11.025 kHz , 22.05 kHz, 44.1 kHz, 12 kHz, 24 kHz and 48
kHz.
It supports bit rates of 5 to 384kbps and VBR (Variable Bit Rate).
It does not support DRM.
It supports ASF files including audio streams only.

6.2.2.3 AAC file format

This format supports MPEG4 AAC-LC.
It conforms to ITunes and 3GPP TS 26.244.
It supports file types of m4a, mp42 and 3gpX. (X is an arbitrary numeric value.)
ITunes is validated in the following versions: 4.*, 5.*, 6.* and 7.0-7.5.
It supports sample rates of 8 kHz, 16 kHz, 32 kHz, 11.025 kHz, 22.05 kHz, 44.1 kHz, 12 kHz, 24 kHz and 48
kHz.
It supports bit rates of 8 to 320kbps and VBR (Variable Bit Rate).
It does not support DRM.

6.2.2.4 WAV file format

This format supports RIFF WAVE.
It supports sample rates of 8 kHz, 16 kHz, 32 kHz, 11.025 kHz, 22.05 kHz, 44.1 kHz, 12 kHz, 24 kHz and 48k
Hz.

If you try to play a file created in any format other than above, the LSI immediately terminates decoding it.

6.2.3 Playing files having damaged data
If the data section of the MP3 file is damaged, the LSI plays the music data in the possible range instead of
ceasing to play the entire file. It mutes the unplayable section. However, AMUTE terminal remains H output.
If the data section of the WAV file is damaged, noises are output.
The LSI executes other files within the playable range and stops playing. Then, it skips to the next tune.
If a part of the data header is damaged, the LSI immediately terminates playing and skips to the next tune.

If the file’s extension is playable but its file’s data does not have a format supporting to the extension, the LSI
immediately terminates playing and skips to the next tune.
If the file does not have a file format, the LSI immediately terminates playing and skips to the next tune.
However, when the file data is structured in a format other than MP3 and its file extension is *.MP3, *.MP2 or
*.MP1, the LSI plays it in the silence mode basically. However, if the LSI can read any playable data, it plays the
file partially.
In this case, the time information which is output as the serial status also becomes unstable. The time information
is then partially output but you cannot obtain the correct information.

Technical Note

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6.2.4 NEXT playing mode and Repeat playing mode
You can select the operation as shown below depending on the next playing mode, repeat mode and random
mode.

Next playing mode
[1] PLAY_NEXT: Automatically searches the next tune after the tune being played ends and starts playing

[2] PLAY_ALL_STOP: After the last tune being played within the memory ends, stops upon completion of search

[3] PLAY_FOL_STOP: After the last tune being played within the folder ends, stops upon completion of

[4] PLAY_TUN_STOP: After the tune being played ends, stops upon completion of search for the next tune.

Repeat mode
[1] REPEAT_ALL: After playing all the tunes within the memory in process, starts playing them from the

[2] REPEAT_FOL: Repeats playing tunes within the folder in process.
[3] REPEAT_TUN: Repeats playing the tune in process.

[4] RANDOM_ALL: Plays the range of 128 files from the current tune being played at random within the

[5] RANDOM_FOL: Plays the range of 128 files from the current tune being played at random within the

Select one operation from next play mode and repeat mode respectively to determine the operation.
When repeat mode is REPEAT_FOL, the PLAY_ALL_STOP becomes invalid, and serves as PLAY_NEXT.
When repeat mode is [3][4][5], the PLAY_ALL_STOP and PLAY_FOL_STOP becomes invalid, and serves as
PLAY_NEXT.
In MODE1, the Next playing mode is fixed to [1] and you cannot select others.
In MODE1, you cannot select the repeat mode [5].

REPEAT_ALL REPEAT_FOL REPEAT_TUN RANDOM_ALL RANDOM_FOL
PLAY_NEXT ○ ○ ○ ○ ○
PLAY_ALL_STOP ○ × × × ×
PLAY_FOL_STOP ○ ○ × × ×
PLAY_TUN_STOP ○ ○ ○ ○ ○

6.2.5 resume playing function
The LSI can read the resume information to the microcomputer in MODE2, the resume playing will be enabled
using this information.
The resume information includes the playing time when it has been read. Thus, in MODE2, the LSI resumes from
previous playing time of the tune.
Resume playing is not supported in MODE1.

Technical Note

the next tune.

for the next tune.
Starts playing the next tune by the play command issued subsequently.

search for the next tune.
Starts playing the next tune by the play command issued subsequently.

Starts playing the next tune by the play command issued subsequently.

beginning of the memory.

memory.

folder in process.

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6.3 MODE1

6.3.1 KEY command operation

6.3.1.1 KEY SCAN (signal mode)

KEY_COL1

KEY_COL2

KEY_COL3

Technical Note

KEY SCAN operates in the following sequence on the circuit configuration as shown in Figure 5.14.
[1] KEY_COL1 to 3 output waveforms at timing as shown in Figure 6.3.1.
[2] By pressing the KEY switch, KEY_ROW 1 to 4 are set to L at timing when KEY_COL 1 to 3 are L.
[3] When detecting L input from KEY_ROW 1 to 4 three times, the master judges that KEY has been pressed.

Then, the master starts the KEY operation.

Figure 6.3.2 shows the waveforms when PLAY KEY has been pressed.

1us

1us

1us

20ms

Figure 6.3.1 KEY SCAN Waveforms

20ms 20ms 20ms 20ms 20ms 20ms

PLAY

KEY_ROW1

KEY_ROW2

KEY_ROW3

KEY_ROW4

KEY_COL1

Determine that the KEY has been pressed and
start the corresponding KEY command.

Figure 6.3.2 Operation Waveforms when KEY is Pressed

6.3.1.2 KEY SCAN (Hold Mode)
KEY SCAN operates in the following sequence on the circuit configuration as shown in Figure 5.14.

[1] KEY_COL1 to 3 output waveforms at timing as shown in Figure 6.3.1.
[2] By pressing KEY switch, KEY_ROW 1 to 4 are set to L at timing when KEY_COL 1 to 3 are L.
[3] When detecting L input from KEY_ROW 1 to 4 three times, the master judges that KEY has been pressed.

Then, the master starts judging status of holded KEY.

[4] When pressed KEY’s decision (L input from KEY_ROW 1 to 4 three times) is detected consecutive 15

times, the master judges that KEY Mode is Hold Mode.

[5] When KEY release is detected in judging status of holded KEY, the master judges that KEY Mode is Single Mode.

Then, the master starts the KEY operation.

[6] When Hold Mode is detected, the master starts the KEY operation in Hold Mode. When KEY release is

detected in Hold Mode, the master finish the KEY operation.

KEYS corresponding to Hold Down operations are FF, FB, VOL+ and VOL-.

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ＦＦ

KEY_COL

KEY_ROW

Technical Note

60ms

Determine that KEY is

pressed (1).

①KEY押下を確定

20ms

Determine that KEY is

pressed (2).

②KEY押下を確定

Determine that KEY is

pressed (16).

⑯KEY押下を確定

pressed.

KEY押下を確定

Determine that KEY is

released.

Determine that KEY is

KEYリリースを確定

Determine that KEY is pressed.

KEY押下を確定

Judging that KEY is held down.

長押し判定中

Determine that KEY is held
down. KEY operates under

長押し動作中

Hold Down Mode

、長押し確定

Figure 6.3.3 Operation Waveforms when KEY Is Held

Note 1: Based on the above sequence, the master determines that KEY is pressed and starts the operation of the pressed

KEY, pressing multiple KEYs at the same time will produce different operations depending on the KEY
combinations. Therefore, you cannot regulate the operation sequence correctly even simultaneously pressing
multiple KEYs will not cause any problems. In Hold Mode, Other pressed KEY is disregarded.

Note 2: Because the KEY input does not have a buffering function, KEY inputs other than those described below are

ignored.

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6.3.1.3 KEY commands

Table 6.3.1.3.1 shows the types and operations of KEY commands.
Table 6.3.1.3.2 shows valid and invalid statuses of KEY commands.

Table 6.3.1.3.1 KEY Commands and Operations

KEY COMMAND Operations

-When receiving PLAY/PAUSE KEY during stop, the LSI starts playing the top file sorted for the

PLAY/PAUSE

STOP

FF

FB

FOL+

FOL-

+10

recognized device.

-When receiving PLAY/PAUSE KEY during play, the LSI pauses playing the file.
When receiving PLAY/PAUSE KEY again, it restarts playing.

-When receiving STOP KEY during play, pause or file search, the LSI stops playing, pausing or
searching a file.

-When receiving FF KEY (single) during play or pause, the LSI searches the next playable file in
the sort order of files being played or paused. Upon completion of search, it starts playing.

-During play of the final file, the LSI returns to the top file in the sort order and starts playing.

-When repeat or random mode is set up, LSI searches the next file following to setup in this
mode. However, when one music repeat is set up, LSI searches the next file following to setup
in memory repeat mode within a memory.

-When receiving FF KEY (Hold Down) during play or pause, the LSI starts fast forward
operations from the position being played. When detecting FF KEY release, the LSI returns to
normal play.

-When a tune ends during FF KEY (Hold Down), the LSI starts fast forward operations from the
top of the next tune in the sort order. However, if repeat is preset, the LSI follows the setting
and starts fast forward operations from the top of the next tune. When detecting FF KEY
release, it returns to normal play.

-When receiving FB KEY (single) during play or pause, the LSI searches the previous
AAC/WMA/MP3 file in the sort order of files being played or paused. Upon completion of
search, it starts playing.

-During play of the top file, the LSI plays the last file sorted.

-When repeat or random mode is set up, LSI searches the next file following to setup in this
mode. However, when one music repeat is set up, LSI searches the next file following to setup
in memory repeat mode within a memory.

-When receiving FB KEY (single) in 1 seconds after start of play, the LSI plays the previous tune
sorted. When receiving FB KEY after 1 second pasts, the LSI returns to the top of the file
being played and restarts playing.

-When receiving FB KEY (Hold Down) during play or pause, the LSI rewinds the file from the
present position of the tune being played. When detecting FB KEY release, it returns to normal
play.
When a tune ends during FB KEY (Hold Down), the LSI starts rewinding the previous tune
sorted from its end. However, if repeat is preset, the LSI follows the setting and starts
rewinding the previous tune from its end. When detecting FB KEY release, it returns to normal
play.

-When receiving FOL+ KEY during play or pause, the LSI searches files in the next folder in the
sort order, where the files being played or paused exits. Upon completion of search, the LSI
plays the file.

-While playing a file in the last folder in the sort order, the LSI plays the top file in the sort order.

-When receiving FOL-KEY during play or pause, the LSI search files in the previous folder in the
order of sort of the folder where the files being played or paused exits. Upon completion of
search, the LSI plays the file.

-While playing files in the top folder in the sort order, the LSI plays the top file in the last folder in
the sort order.

-When receiving +10 KEY during play or pause, the LSI searches the file 10 files ahead of the
current one in the sort order of the files being played or paused. Upon completion of search,
the LSI starts playing the file.

-When the remaining number of files to be played in the sort order becomes less than 10, the
LSI plays the top file.

-When repeat or random mode is set up, LSI searches the next file following to setup in this
mode. However, when one music repeat is set up, LSI searches the next file following to setup
in memory repeat mode within a memory.

Technical Note

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(

g

)

VOL+/VOL-

CHNG_DEV

REPEAT

RANDOM

Technical Note

-When receiving VOL+/VOL- KEY with SEL_VOL terminal set to H, the LSI controls the sound
volume.

-The volume is controlled in 32 steps between -∞ (minimum volume) to 0 dB (maximum
volume).

-VOL+/VOL- KEY turns UP/DOWN the volume by one step at the timing when the KEY is
pressed (single). When Hold Downing KEY for more than 1 second, the LSI judges the
operation as a Hold Down and then continuously turns UP/DOWN the volume while the KEY is
held down. Thus, VOL_KEY can be held down.

-The master selects the device between USB memory and SD memory card. To do this, both
devices should be connected or one device should correspond to the other (USB to SD or SD to
USB). Otherwise, this key operation is ignored.

-Stop after selecting the device at the top tune of the device.

-REPEAT and RANDOM settings return to the initial values.

-When inserting both USB Memory and SD Memory card, or neither USB Memory and SD
Memory card, the master precedes USB Memory.

-REPEAT KEY changes the repeat play mode.

-By pressing REPEAT KEY, the LSI toggles “Repeat all tunes within the memory“ “Repeat one
tune”  “Repeat within folder”.

-”Repeat within folder” repeats files within the folder being played. “Repeat all tunes within the
memory” is set by default

-RANDOM KEY plays in the range of ±128 files in the sort order at random.

-RANDOM KEY can change the mode only during play, pause or stop.

Table 6.3.1.3.2 KEY Operation Valid/Invalid

After recognized device

PLAY/

PAUSE

STOP × × ○ ○ × ○ × ×

FF × × ○ ○ × × × ×

FB × × ○ ○ × × × ×

FOLDER+ × × ○ ○ × × × ×

FOLDER- × × ○ ○ × × × ×

VOL+ ○ ○ ○ ○ ○ × ○ ○

VOL- ○ ○ ○ ○ ○ × ○ ○

＋１０ × × ○ ○ × × × ×

CHNG_DEV × ○ × ○ ○ × × ○

REPEAT ○ ○ ○ ○ ○ × × ×

RANDOM ○ ○ ○ ○ ○ × × ×

○ = Valid, × = Invalid

Stop after searchin

recognized
either USB

or SD

○ ○ ○ ○ ○ × × ×

recognized

both USB

and SD

During playing device

recognized
either USB

orSD

recognized

both USB

and SD

STOP recognized

During
search

Error condition

either USB

or SD

recognized

both USB

and SD

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6.3.2 LED operations

To display the LSI operation status, 7 types of LED controls are provided. The type of LEDs and their statuses
are shown in Figure 6.3.2.

Type of LEDs Operations

LED_ERROR

LED_PLAY The LED lights during play. It blinks during pause.

LED_PSD

LED_PUSB

LED_ACCESS The LED lights during access to the USB memory or SD memory card.

LED_RANDOM The LED lights during random play.

LED_REPEAT

Technical Note

Table 6.3.2 Types and Operations of LEDs

-The LED lights when an error occurs. The following cases cause errors.
[1] Neither USB memory nor SD memory is connected, or there is no playable file even if the
memory is connected.
[2] Communication error in the memory being played, or communication disconnection.

-The LED blinks when USB HUB or un-supported device.
[1] USB HUB; Blink in a cycle of 500ms after 30sec from insertion.
[2] un-supported device; Blink in a cycle of 200ms.

The LED lights when the SD memory card is connected and it is being played.
The LED blinks when the SD memory card is connected but it is not selected.
The LED goes off when the SD memory card is not connected.
The LED lights when the USB memory is connected and it is being played.
The LED blinks when the USB memory is connected but it is not selected.
The LED goes off when the USB memory is not connected.

The LED lights while repeating a folder. The LED blinks while repeating one tune.
The LED goes off while repeating all tunes.

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6.4 MODE2

6.4.1 Command operations

The LSI allows command operations from an external microcomputer via a slave I2C serial interface.
This is enabled by inputting L to SEL_SLAVE to set MODE2. The command length to be sent varies depending
on the command.
Table 6.4.1.1 shows the command specifications.
Table 6.4.1.2 shows enabled/disabled state of each command.

Technical Note

Table 6.4.1.1 Command Operations

Command name Comm

and

1st 2nd 3rd 4th

CONFIG
CHG_SYSTEM_M

ODE

STOP 2 0x60 0x01 - -

ABORT 4 0x60 0x02 N 0x00

Command Explanation of operation

4 0x60 0x00 N 0x00

・Set up System Operation Mode.
・Please choose 3rd byte N from the following. The other setup does

not receive a command.

N= 0x00 ; CONFIG Mode
N= 0x01 ; PLAYER Mode
N= 0x02 ; FILE RW Mode
N= 0x03 ; PLAY LIST Mode
N= 0x04 ; CD-DA Mode
N= 0x05 ; CD-ROM Mode

N= 0x07 ; IPL WRITE Mode
The initial setting is N= 0x00.

・When receiving the STOP command, end the present processing
and shift to the initial state in each system operation mode.
・Playing of a file will be stopped when receiving the STOP command
during Playing, a stop, and file search.
・Playing of a file will be stopped when receiving the STOP command
during fast forward or fast back Playing.
・After stopping playing the file, the LSI restarts playing it from the
tune being stopped. However, if the memory is removed and new
one is inserted before restarting, the LSI returns to the top tune of the
memory.
・This command suspends the current analysis such as TAG analysis
and folder analysis.
・The LSI suspends analysis only and continues playing the file when
receiving the ABORT command.
・Select N at the 3
considered to specify N=0x01. Specify the operation to be suspended
at N.

N=0x00: Suspends TAG analysis before playing. The LSI continues

playing the file.
N=0x01: Suspends folder analysis.
Since this sets the unanalyzed status after suspension, be sure to
send the ANALYZE_ROOT command to redo analysis before
obtaining the file contents.

rd

byte from the following. Any other settings are

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Technical Note

CHG_DEV 2 0x60 0x03 - -

DIS_WDT 2 0x60 0x04 - -

SET_WDT 2 0x60 0x05 - -

SET_SORT 4 0x60 0x06 N 0x00

SET_12MOUT 4 0x60 0x07 N M

SET_LANG 4 0x60 0x08 N M

SET_MP3 4 0x60 0x09 N 0x00

SET_BROWSE_N
UM

SET_PLAYINFO_
NUM

4 0x60 0x0

A

4 0x60 0x0

B

N 0x00

N 0x00

・This command select device between USB memory and SD memory

card.

To do this, both devices must be connected or one device is provided

against the other (USB memory against SD memory card, and vice
versa). Any other cases will be ignored.

・After the device is selected, the system operation mode remains the
previous mode (before selecting) and goes to the initial state.
・The setting values of the individual commands remain as they are.
However, those of the REPEAT and RANDOM commands return to
the initial values

・This command disables Watch dog Timer.
・Initial setting is that Watch dog Timer function is effective.
・This command writes “1” to STATUS WDT_RFLG when it is

executed.

・Set up file sorting operation in a memory.
・Select N at the 3

rd

byte from the following. Any setting other than
N=0x00 is considered to specify N=0x01.
N=0x00: Disables sorting of files/folders.

Data is read out in the order that is written to FAT.

N=0x01: Enables sorting of files/folders.

・Initial setting is N= 0x01. A sorting function is effective.
・Set up CLKOUT12 terminal and a TEST12 terminal output.
・Select N at the 3

rd

byte from the following. Any other settings will not
accept the command.
N=0x00: Disables 12 MHz clock output from the CLKOUT12

terminal.
N=0x01: Enables 12 MHz clock output from the CLKOUT12
terminal.
・Select M at the 4

th

byte from the following. Any other settings will
not accept the command.
M=0x00: Disables 16.9344 MHz clock output from the TEST12
terminal.
M=0x01: Enables 16.9344 MHz clock output from the TEST12
terminal.
・The 16.9344 MHz clock is a clock which buffers the input from the
XIN_PLL terminal.

・initial setting is N= 0x00 and M= 0x00. Output is invalid.
・Set up a NATIVE language.
・Select N and M at the 3

rd

and 4th bytes from the following. Any other

setting is considered to specify {M,N}={0x00,0x00}: ASCII.

{ M, N }= { 0x03, 0xA4 }: SHIFT-JIS(CP932)
{ M, N }= { 0x03, 0x52 }: OEM_850

・Initial setting is {M , N} = {0x03, 0xA4} ; SHIFT JIS(CP932).
・Select the layer of the MPEG audio to play.
・Select N at the 3

rd

byte from the following. Any setting other than

N=0x00 is considered to specify N=0x01.
N=0x00: Plays all the files having extension mp1, mp2, and mp3.
N=0x01: Plays the files having extension mp3 only.
・Initial setting is N= 0x00. All the files of mp1, mp2, and mp3 are
reproduced.

・Specify the number of entries (a file or folder) when enabling a
browsing function which carries out prediction analysis.
・Specify N at the 3rd byte within the range from 0x00 to 0x14(20).
Any other settings will not accept the command.

・The LSI analyzes entries in the number specified by N.
・Since even (0-N) can specify with the parameter of

'READ_BROWSE_INFO', N+1 entry information can be acquired at
the maximum.

・Initial setting is N=0x0A=10 entry prediction analysis.
・Specify the number of files predicted by the READ_PFILE_NAME

command.
・A READ_PFILE_NAME command can be predicted only within the
same folder.
・Specify N at the 3

rd

byte within the range from 0x00 to 0x5. Any
other settings will not accept the command. The LSI looks ahead
files in the number specified by N.

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Technical Note

・Since READ_PFILE_NAME allows you to specify in a range of 0 to
N, you can obtain the information of up to N+1 files.
・Initial setting is N=0x03 file prediction analysis.

SET_LBIT 4 0x60 0x0

N 0x00

D

SET_IPL_UNIT 4 0x60 0x0

N 0x00

E

SET_UTPKT 4 0x60 0x0

N 0x00

F

GET_DEV_FREE 4 0x60 0x10 0x0

0x00

0

SET_LANG2 4 0x60 0x11 0x00 N

SET_OUTLANG 4 0x60 0x12 0x00 N

SET_TOUT_TUR 4 0x60 0x18 0x01 N

・Set up LBIT and a copy bit when SPDIF output.
・Select N at the 3

rd

byte from the following. Any setting other than
N=0x01 is considered to specify N=0x00.
N=0x00: SPDIF LBIT=1, copy bit = 0 (copy disabled).
N=0x01: SPDIF LBIT=0, copy bit = 1 (copy enabled).

・Initial value is N= 0x00, (ban on a copy).
・Set up the unit which rewrites FLASH ROM when IPLWrite.
・Select N at the 3

rd

byte from the following. Any setting other than
N=0x00 is considered to specify N=0x01.
N=0x00: Writes to FLASH by page.
N=0x01: Writes to FLASH by byte.

・Initial value is N= 0x00. It is page unit writing.
・Set up a USB terminal output.
・Select N at the 3

rd

byte from the following. Any other setting is
considered to specify N=0x01.
N=0x00: Normally operating terminal
N=0x01: Outputs a test packet from the USB terminal.

・Initial value is N= 0x00.
・Analyze the availability of the media selected now.
・The LSI starts analyzing the free space after receiving the

command. During analysis, SEARCH=0x1 is set. Upon completion
of analysis, SEARCH=0x0 is set.
・After analyzing the free space, you can use the READ_DEV_FREE
command to obtain the current free space.
・The LSI does not monitor the free space automatically. Whenever
changing the system operation mode or the selected media, you
should restart analysis.

・Set up the character encoding conversion mode inside a file system.

・Please choose N from the following values.The other setup is not

received.
N= 0x00 : Character encoding conversion is performed inside a file
system.
N= 0x01 : Character encoding conversion is not performed inside a
file system.
・When N= 0x01 is set up, an action changes as follows.
the path information which Read(s) -- the data in media -- it becomes
binary data as it is
The other delimiter and reservation character of path information
turns into a character of UTF-16 encoding.
・After a receptionist, when this command performs changes in
system mode, it becomes effective.

・An initial value is N= 0x00.
・Set up whether UTF8/UTF16 conversion is performed when the

character string status output of a file and a folder name.
・Please choose N from the following values.The other setup is not
received.

N= 0x00 : With a setup of SET_LANG, it outputs without changing.
N= 0x01 : It changes and outputs to UTF-8 at the time of an output.
N= 0x02 : It changes and outputs to UTF-16 at the time of an output.

・An initial value is N= 0x00.

・Set up the wait time after Test Unit Ready command transmission at

the time of USB memory recognition.
・When the response to Test Unit Ready is failure, re-try of Test Unit
Ready is performed after the setting value Nx2 (msec).

・Re-try is performed to 375 times.
・A timeout occurs after the setting value Nx750 (msec).
・An initial value is 191sec (setting value N=0xFF).

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Technical Note

SET_IDL_TIME 6 0x60 0x18 0x02 0x00

SET_TUR_PASS 4 0x60 0x18 0x0B N

SET_THR1 12 0x6F 0x00 0x00 0x00

SET_THR2 12 0x6F 0x00 0x00 0x00

SET_THR3 12 0x6F 0x00 0x00 0x00

PLAY control
PLAY 2 0x61 0x01 - -

PAUSE 2 0x61 0x02 - -

HOME 4 0x61 0x03 N 0x00

PLAYMODE 4 0x61 0x04 N 0x00

・Set up the idle time after USB memory bus reset.
・Set a setup as the 5 - 6th byte with a little endian.
・Setting value {6 th=M, 5 th=N} x0.167 (usec) becomes wait time.
・As for an initial value, 220usec (setting value N=1325= {M=x05,

N=x2D}) is set up.
・Please set a setting value as the range of 300 (50usec)-9000
(1.5msec).
・Operation after timeout generating with the Test Unit Ready
command is set up at the time of USB memory recognition.
・Please choose 4th byte N from the following. A setup of those other
than the following operates as that to which 0x01 was set.

N= 0x00: It is referred to as ERROR as memory recognition failure
after a timeout.
N= 0x01: When the number of effective LUN is one, after a timeout,
the response of Test Unit Ready is disregarded and the next memory
recognition processing is performed.

・An initial value is N= 0x00.
・Setup which performs the through output to I2S output from I2S

input.
・Please set up 8 bytes from the 5th byte of following.
0x00 0x00 0x30 0xD0 0x1E 0x00 0x00 0x00
・When you perform a through output, please set up SET_THR1,
SET_THR2, and SET_THR3.
・Setup which performs the through output to I2S output from I2S
input.
・Please set up 8 bytes from the 5th byte of following.
Through output invalidity; 0x00 0x00 0xB0 0xD0 0x01 0x00 0x00
0x00
Through output effective; 0x00 0x00 0xB0 0xD0 0x05 0x00 0x00
0x00
・When you perform a through output, please set up SET_THR1,
SET_THR2, and SET_THR3.
・Setup which performs the through output to I2S output from I2S
input.
・Please set up 8 bytes from the 5th byte of following.
EIAJ input; 0x00 0x00 0x40 0xE0 0x00 0x00 0x00 0x00
I2S input; 0x00 0x00 0x40 0xE0 0x30 0x00 0x00 0x00
・When you perform a through output, please set up SET_THR1,
SET_THR2, and SET_THR3.

・When receiving the PLAY command during stop, the LSI starts

playing the file currently selected.

・When receiving the PLAY command during pause, the LSI starts

playing the file at the paused time.

・When receiving the PLAY command in the CONFIG mode, the LSI
automatically goes to the PLAYER mode and plays the first tune in
the sort order.
・When receiving the PAUSE command during play, the LSI pauses
playing of the file
・When receiving the HOME command, the LSI searches files of the
first tune within the memory.

・TAG analysis, if it is enabled, is performed.
・Select N at the 3rd byte from the following. Any setting other than

N=0x00 is considered to specify N=0x01.
N=0x00: Stops after search is completed.
N=0x01: Starts playing after search is completed.

・When receiving the PLAYMODE command, the LSI changes play
mode in accordance with the setting of N in the 3rd byte.

・During play, the play mode is immediately changed. During stop, this

command cannot start playing the file.

・Select N at the 3

accept the command.
N=0x00: Changes to normal play.
N=0x01: Changes to fast forward.
N=0x02: Changes to rewind.

rd

byte from the following. Any other settings will not

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© 2012 ROHM Co., Ltd. All rights reserved.

2012.04 - Rev.

BU94702AKV

A

Technical Note

・Initial setting is N= 0x00. It is normal Playing.

VOL+ 4 0x61 0x06 0x0

0x00

1

VOL- 4 0x61 0x06 0x0

0x00

2

REPEAT 4 0x61 0x06 0x0

0x00

3

RANDOM 4 0x61 0x06 0x0

0x00

4

FF 4 0x61 0x07 M N

FB 4 0x61 0x08 M N

・When receiving the VOL+ command, the LSI controls the sound
volume step by incrementing by 1.
・The sound volume is controlled in 32 steps from -∞ (minimum
volume) to 0 dB (maximum volume).
・When receiving the VOL- command, the LSI controls the volume
step by decrementing by 1.
・The sound volume is controlled in 32 steps from -∞ (minimum
volume) to 0 dB (maximum volume).

・This command changes the mode for repeat.
・REPEAT command toggles as: memory repeat ->1 music repeat ->

folder repeat.
・For the settings of the REPEAT, RANDOM, and SET_REPRAND
commands, the one finally set becomes enabled.

・Initial setting is the all-songs repeat in a memory.
・This command changes the mode for random play.
・If random play is enabled, the LSI plays the currently-played file at

random in the area of ±128 files in the sort order.
・The RANDOM command toggles as: Normal play→Repeat all the
tunes within the memory.
・For the settings of the REPEAT, RANDOM and SET_REPRAND
commands, the one finally set becomes enabled.
・When receiving the FF command during play, pause, or stop, the

LSI searches the file N tunes ahead from the file being played or
paused in the sort order.

・If the number of remaining files is less than N in the sort order, the
LSI searches back to the first file.

・If N=0, the LSI searches the current file.
・If REPEAT or RANDOM is set, the LSI searches the next file in

accordance with the setting. However, if “repeat 1 tune” is set, the LSI
searches the next file in accordance with the repeat setting within the
memory.

・If TAG analysis is enabled, the LSI also performs that analysis.
・After searching, the LSI operates in accordance with the setting in

rd

byte.

the 3

Select M at the 3

rd

byte from the following. Any setting other than

M=0x00 is considered to specify M=0x01.

M=0x00: Stops after search is completed.

M=0x01: Starts playing after search is completed.
・The number of tunes to be searched depends on the setting of N in

the 4th byte.

・When receiving the FB command during play, pause, or stop, the

LSI searches the file, N tunes back from the file being played,
paused or stopped, in the sort order.

・When the LSI play is playing a tune in less than N files from the top
in the sort order, it searches the first tune. However, only when the
file to be searched is the first tune within the memory in the “repeat
within the memory” setting, the LSI searches the file across the last
tune within the memory to the first one. If the file to be searched is
the first file within the folder in the “repeat within the folder” setting,
the LSI searches the file within the same folder.
・If N=0, the LSI searches the top of the current file. However if it

receives the FB command with N=0 when the play time is within 1
second, the LSI searches the top of the previous tune.

・If REPEAT or RANDOM is set, the LSI searches files in accordance

with the setting. However, if “repeat one tune” is set, the LSI
searches files in accordance with the “repeat within the memory”
setting.

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© 2012 ROHM Co., Ltd. All rights reserved.

2012.04 - Rev.

BU94702AKV

A

FOL+ 4 0x61 0x09 M N

FOL- 4 0x61 0x0

M N

A

PLAY_RESUME 46 0x61 0x0

B

0x0

0

0x00

PLAY Setting
SET_DOUT 4 0x61 0x10 0x0

N

0

Technical Note

・If TAG analysis is enabled, the LSI also performs that analysis.
・After searching, the LSI operates in accordance with the setting in

M=0x00: Stops after search is completed.
M=0x01: Starts playing after search is completed.
・The number of tunes to be searched depends on the setting of N in
the 4th byte.

・When receiving the FOL+ command during play, pause, or stop, the

・If the remaining folders are less than N in the sort order, the LSI

returns to the first folder.

・Even if REPEAT or RANDOM is set, the LSI searches the folder in a

・If N=0, the LSI searches the top of the current folder.
・If TAG analysis is enabled, the LSI also performs that analysis.
・After searching, the LSI operates in accordance with the setting in

M=0x00: Stops after search is completed.
M=0x01: Starts playing after search is completed.
・The number of tunes to be searched depends on the setting of N in
the 4th byte.

・When receiving the FOL- command during play, pause, or stop, the

・When playing a tune less than N folders from the top in the sort

order, the LSI returns to the first folder. However, when playing a file
within the first folder, the LSI searches the folder across the last tune
within the memory.
・Even if REPEAT or RANDOM is set, the LSI searches the folder in
the status where “repeat within the memory” is set.

・If N=0, the LSI searches the top of the current folder.
・If TAG analysis is enabled, the LSI also performs that analysis.
・After searching, the LSI operates in accordance with the setting in

M=0x00: Stops after search is completed.
M=0x01: Starts playing after search is completed.

・The number of folders to be searched depends on the setting of N in

the 4th byte.

・This command sets 42-byte data obtained by the

・Set the data in ascending order of the offsets obtained by the

・After writing the command, the LSI starts resume play.
・If the resume target cannot be searched, the LSI searches the first

tune of in the device and plays.

・This command sets audio output.
・Select N at the 4

not accept the command.
N=0x00: Outputs via analog line.
N=0x01: Outputs using the digital audio interface (SPDIF).
N=0x02: Outputs in I2S(32fs) format.
N=0x03: Outputs in I2S(48fs) format.
N=0x04: Outputs in I2S(64fs) format.
N=0x05: Outputs in EIAJ(32fs) format.
N=0x06: Outputs in EIAJ (48fs) format.
N=0x07: Outputs in EIAJ (64fs) format.
・By default, N=0x00: "Analog line output" is set.

rd

byte. Select M at the 3rd byte from the following. Any

the 3
setting other than M=0x00 is considered to specify M=0x01.

LSI searches the folder N tunes ahead from the one having the file
being played, paused or stopped in the sort order.

status where “repeat within the memory” is set.

rd

byte. Select M at the 3rd byte from the following. Any

the 3
setting other than M=0x00 is considered to specify M=0x01.

LSI searches the folder N tunes back from the one having the file
being played or paused in the sort order.

rd

byte. Select M at the 3rd byte from the following. Any

the 3
setting other than M=0x00 is considered to specify M=0x01.

th

READ_RESUME_INFO command to 5

-46th bytes.

READ_RESUME_INFO command.

th

byte from the following. Any other settings will

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© 2012 ROHM Co., Ltd. All rights reserved.

2012.04 - Rev.

BU94702AKV

A

Technical Note

SET_EQ 4 0x61 0x10 0x0

1

SET_VOL 4 0x61 0x10 0x0

2

SET_NEXT 4 0x61 0x10 0x0

3

SET_REPRAND 4 0x61 0x10 0x0

4

N

・This command sets the equalizer.
・Set N at the 4

th

byte from the following. Any other settings will not
accept the command.
N=0x00: EQ OFF
N=0x01: POPS
N=0x02: JAZZ
N=0x03: ROCK
N=0x04: CLASSIC
N=0x05: R&B
N=0x07: EQ OFF
N=0x08: BASS BOOST1
N=0x09: POPS + BASS BOOST1
N=0x0A: JAZZ + BASS BOOST1
N=0x0B: ROCK + BASS BOOST1
N=0x0C: CLASSIC + BASS BOOST1
N=0x0D: R&B + BASS BOOST1
N=0x0F: BASS BOOST2
・By default, N=0x00: EQ OFF is set.

N

・This command sets the sound volume with the value of N at the 4
byte in 32 steps from 0x00 to 0x1F.

・Setting range outside 0x00 to 0x1F will not accept the command.
・By default, N=0x06 is set.

N

・This command sets next tune play mode.
・Select N at the 4

th

byte from the following. Any settings other than

N=0x04 will not accept the command.
N=0x00: PLAY_NEXT:
After the tune being played is completed, the LSI automatically

searches the next tune and starts playing it.
N=0x01: PLAY_ALL_STOP:
After the last tune within the memory being played is completed,
the LSI reaches the next tune and stops.
When the play command is issued again, the LSI starts playing
the next tune.
N=0x02: PLAY_FOL_STOP:
After the last tune within the folder being played is completed, the

LSI searches the next tune and stops.
When the play command is issued again, the LSI starts playing
the next tune.
N=0x03: PLAY_TUN_STOP:
After the tune being played is completed, the LSI searches the
next tune and stops.
When the play command is issued again, the LSI starts playing
the next tune.

・By default, N=0x00 is set.
・If the repeat mode is set to “repeat within folder”, operation setting

N=0x01 will become disabled. The LSI searches the next tune and

then starts playing it.
・If the repeat mode is set to “repeat one tune”, operation settings

N=0x01 and 0x02 will become disabled. The LSI searches the next

tune and then starts playing it.
・If the repeat mode is set to “random within memory” or “random

within folder”, the operation settings N=0x01 and 0x02 will become

disabled. The LSI searches the next tune and then starts playing it.
・When system operation mode is PLAYLIST mode, operation in a

folder of N= 0x02 setup becomes invalid, and does not receive a

command.

N

・This command sets repeat mode.
・Select N at the 4

th

byte from the following. Any other settings will
not accept the command.
N=0x00: REPEAT_ALL: Repeats within the memory
Repeats all the tunes within the memory being played.
N=0x01: REPEAT_FOL: Repeats within the folder
Repeats the tunes within the folder being played.

N=0x02: REPEAT_TUN: Repeats one tune

Repeats the tune being played.

A setup of the repeat in the memory is followed whenFF and FB

command.

N=0x03: REPEAT_TUN: Repeats one tune

th

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2012.04 - Rev.

BU94702AKV

A

SET_TAG 4 0x61 0x10 0x0

N

5

SET_TOC 4 0x61 0x10 0x0

N

6

SET_PRM 8 0x61 0x10 0x0

L

7

BROWSING

Technical Note

Repeats the tune being played.
A setup of the repeat in the memory is followed whenFF and FB

command.
N=0x04: RANDOM_ALL: Random within the memory
Plays tunes at random starting from the one being played, in a
range 128 tunes ahead and back of the tune.
N=0x05: RANDOM_FOL: Random within the folder
Plays tunes at random within the folder starting from the one
being played, in a range 128 tunes ahead and back of the tune.

・By default, N=0x00 is set.
・For the settings of the REPEAT, RANDOM and SET_REPRAND

commands, the one finally set becomes enabled.
・When system operation mode is PLAYLIST mode, operation in a
folder of N= 0x01 and 0x05 setup becomes invalid, and does not
receive a command.

・This command sets TAG analysis mode.
・Select N at the 4

N=0x00 will be considered to specify N=0x01.
N=0x00: Does not perform TAG analysis.
N=0x01: Performs TAG analysis.

・TAG analysis is performed immediately before the LSI starts playing

a tune, and started from the file to be searched after the setting is
enabled.
・After TAG analysis is completed, the LSI writes the result to the
status register.

・By default, N=0x01: "Performs TAG analysis" is set.
・This command sets TOC analysis mode.
・Select N at the 4

N=0x00 will be considered to specify N=0x01.
N=0x00: Does not perform TOC analysis.
N=0x01: Performs TOC analysis.
・When receiving the command, inserting or changing the device, the
LSI analyzes the total number of folders within the device (all the
folders including root folders) and the total number of playable files.
When receiving a command, TOC analysis is performed only at
change from OFF to ON.

・The total number of files conforms to the SEL_MP3 command.
・After TOC analysis is completed, the LSI writes the result to the

status register, and stops at the first tune in the device.

・By default, N=0x00: "Does not perform TOC analysis" is set.
・This command sets play time (M) and skip time (N) for fast forward

and rewind.
・Play time is a period of time to make sound. Skip time is a period of
time to skip during search.

・For fast forward and rewind, a cycle of {play time (M) + skip time (N)

+ error (O)} is repeated.
The error is determined by the difference between the minimum

decode unit and the rounding error between the play time and the
real time requiring to search the skip time. The error varies
depending on the file and memory structure.

・Play time is set to M[15:0]= [6th byte, 5th byte], and skip time to

N[15:0]= [8th byte, 7th byte].
The unit is msec. By default, play time is 300ms=M[15:0]= [6th
byte=x01,5th byte=x2C], and skip time is 2100ms=N[15:0]= [8th
byte=x08,7th byte=x34].
Specifying 0x0 sets the default.
Set play time to 300ms or more, and skip time to (play time×16) or
less.
・0xL in the 4

rewind. The allowable level is -6dB X[4th byte].
Allowable setting range is from 0x00 to 0x10.
By default, 0x02=-12dB is set. Setting of 0x10 is equivalent to
MUTE.

th

byte from the following. Any settings other than

th

byte from the following. Any setting other than

th

byte sets the attenuation level during fast forward and

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2012.04 - Rev.

BU94702AKV

A

Technical Note

ANALYZE_ROOT 4 0x62 0x00 0x0

0

PLAY_CURSOR 4 0x62 0x01 0x0

0

GET_TAG_CURS
OR

GET_PATH_CURS
OR

PLAY_DIRECT 10 0x62 0x01 0x0

MOV_NEXT 4 0x62 0x02 0x0

MOV_PREV 4 0x62 0x02 0x0

MOV_UP 4 0x62 0x02 0x0

MOV_DOWN 4 0x62 0x02 0x0

MOV_HOME 4 0x62 0x02 0x0

MOV_PLAYING 4 0x62 0x02 0x0

4 0x62 0x01 0x0

1

4 0x62 0x01 0x0

3

4

1

2

3

4

5

6

0x00

・The LSI starts analyzing the root folder immediately after receiving
the command.
・The analysis is performed for the information of the entries (files or
subfolders) set by the SET_BROWSE_NUM command.
・Upon completion of analysis, the cursor position for browsing within

the memory is set to the first entry (file or subfolder) within the root

folder.

0x00

・This command selects the file being pointed by the memory
browsing cursor.

・If a playable file is selected, the LSI starts playing it.
・If a folder or unplayable file is selected, this command will not be

accepted.

0x00

・This command performs TAG analysis for the file being pointed by

the memory browsing cursor.
・When a file is pointed by the memory browsing cursor, the LSI
immediately starts TAG analysis through the file. Upon completion
of analysis, the LSI writes the result to the status register.
・When a folder is pointed by the memory browsing cursor, this

command will not be accepted.

0x00

・This command analyzes the full path (within the memory) of the
entry pointed by the memory browsing cursor.

0x00

・This command starts playing the file specified by the access data.
・If the access data does not specify a playable file, the LSI searches

the first tune in the device and stops.

・The position of the memory browsing cursor does not change.
・Set the access data at the 5

N

・This command moves the memory browsing cursor from the current

position to the position N ahead in the sort order.
・The analysis is performed for the information of the entries specified

by the SET_BROWSE_NUM command, starting from the move

destination. After the analysis is completed, the LSI writes the result

to the status register.
・If there are less than N files after the current memory browsing

cursor position in the folder, the cursor position goes to the end of

the folder.
・If the sort function (SET_SORT) is OFF, the cursor moves in the
FAT order.

N

・This command moves the memory browsing cursor from the current

position to the position N backward in the sort order.
・The analysis is performed for the information of the entries specified
by the SET_BROWSE_NUM command, starting from the move
destination. After the analysis is completed, the LSI writes the result
to the status register.
・If there are less than N files from the top of the folder to the current

memory browsing cursor position, the cursor position goes to the top

of the folder.
・If the sort function (SET_SORT) is OFF, the cursor moves in the
FAT order.

0x00

・This command moves the memory browsing cursor to a higher-level
folder.

・After moving, the LSI analyzes the folder.
・If the cursor is in the highest layer (root), nothing will be done.

0x00

・This command selects the lower-level holder pointed by the memory

browsing cursor to move. After moving, the LSI analyzes the folder.

・When a folder is selected, the LSI starts analyzing it.
・When a file is selected, the LSI does not accept the command.
・If the cursor selects the folder in the lowest layer, nothing will be

done.

0x00

・This command moves the memory browsing cursor to the top of the

root folder.
・After moving, the LSI analyzes the folder.

0x00

・This command moves the memory browsing cursor to the tune being

played.

・After moving, the LSI analyzes the folder.
・During stop or search, the LSI does not accept the command.

th

-10th bytes.

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2012.04 - Rev.

BU94702AKV

A

Technical Note

MOV_DIRECT 10 0x62 0x02 0x0

N

7

SET_EXTENSION 4 0x62 0x04 0x0

N

0

PLAYLIST
SET_PLAYLIST 260 0x62 0x10 0x0

N This command selects the play list file by full path and file name.

0

SET_PLAYLIST_D
IRECT

SET_PLAYLIST_C
URSOR

10 0x62 0x11 0x0

0

4 0x62 0x12 0x0

0

N

N

・This command moves the memory browsing cursor to the position
specified by the access data.

・After moving, the LSI starts analyzing at this position.
・Set the access data at the 5

th

-10th bytes.

・Select the operation after moving with N in the 4th byte. Select N
from the following. Any setting other than N=0x00 will be considered
to specify N=0x01.
N=0x00: Only moves the cursor and analyzes.
N=0x01: If moving to a file, starts playing it.
・This command sets the type of file to be output to the status register
when browsing within the memory (analyzing the folder).
・Select N at the 4

th

byte from the following. Any other settings will

not accept the command.
N=0x00: Playable file
N=0x01: Play list file
N=0x02: All files
N=0x03: Folder only (Does not browsing files.)
・The initial value depends on the mode.
In PLAYER mode: N=0x00: Playable file
In PLAYLIST mode: N=0x01: Play list file
In FILE RW: N=0x02: All files
In other cases: N=0x00: Playable file
・The setting of this command is reflected only when the

ANALYZE_ROOT command is executed. After setting the

command again, be sure to execute the ANALYZE_ROOT

command.

・The full path is 256 bytes at maximum (including drive letter (A:\), file

name and extension). Set this at the 5

th

-260th bytes.

If the length is less than 256 bytes, insert 0x00 at the end.

Insert ”\”(0x5C) for the delimiter between folder layers.

・The drive letter is "A:\" for USB and "B:\" for SD.

・You can also specify the path in a format without drive letter. In this

case, the length is 253 bytes at maximum.
・If the full path has a drive letter different from the one for the
memory being selected, an error occurs. (For example, "B:\" is set
for the full path when USB is selected.)
・The setting for MUSIC/playllist/playlist.m3u will be: x4D 55 53 49 43
5C 70 6C 61 79 6C 69 73 74 5C 70 6C 61 79 6C 69 73 74 2E 6D 33
75 00.
・The operation after search conforms to the setting of N in the 4

th

byte. Select N from the following. Any setting other than N=0x00

will be considered to specify N=0x01.
N=0x00: Searches the first tune and then stops.
N=0x01: Searches the first tune and then starts playing it.
・After executing this command, the position of the play list browsing

cursor is reset to the top.

・This command selects a play list file by access data.
・The LSI does nothing if the access data is other than play list file.
・Set the access data at the 5

th

-10th bytes.

・The operation after search conforms to the setting of N in the 4th
byte. Select N from the following. Any setting other than N=0x00
will be considered to specify N=0x01.
N=0x00: Searches the first tune and then stops.
N=0x01: Searches the first tune and then starts playing it.
・After executing this command, the position of the play list browsing
cursor is reset to the top.
・This command specifies the entry pointed by the play list browsing
cursor as play list.

・The LSI does nothing if a file other than the play list is specified.
・The operation after search conforms to the setting of N in the 4

th

byte. Select N from the following. Any setting other than N=0x00
will be considered to specify N=0x01.
N=0x00: Searches the first tune and then stops.
N=0x01: Searches the first tune and then starts playing it.

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2012.04 - Rev.

BU94702AKV

A

Technical Note

・After executing this command, the position of the play list browsing
cursor is reset to the top.

PLST_PLAY_CUR
SOR

PLST_GET_TAG_
CURSOR

PLST_MOV_NEXT 4 0x62 0x14 0x0

PLST_MOV_PREV 4 0x62 0x14 0x0

PLST_MOV_HOM
E

PLST_MOV_PLAY
ING

FILE RW
FOPEN_R 260 0x63 0x01 0x0

FOPEN_R_CURS
OR

FOPEN_R_DIREC
T

4 0x62 0x13 0x0

0

4 0x62 0x13 0x0

1

0

1

4 0x62 0x14 0x0

2

4 0x62 0x14 0x0

3

0

4 0x63 0x01 0x0

1

10 0x63 0x01 0x0

2

0x00

0x00

N

N

0x00

0x00

0x00

0x00

0x00

・This command plays the file pointed by the play list browsing cursor.

・If any play list is not selected, the command will not be accepted.

・This command starts TAG analysis for the file pointed by the play list

browsing cursor.

・If any play list is not selected, the command will not be accepted.
・This command moves the play list browsing cursor to the position N

ahead from the current position.
・The LSI analyzes the information as much as the files (or folders)
set by the SET_BROWSE_NUM command. After analysis, the LSI
writes the result to the status register.

・If any play list is not selected, the command will not be accepted.
・This command moves the play list browsing cursor to the position N

backward from the current position.
・The LSI analyzes the information as much as the files (or folders)
set by the SET_BROWSE_NUM command. After analysis, the LSI
writes the result to the status register.

・If any play list is not selected, the command will not be accepted.
・This command moves the play list browsing cursor to the top.
・The LSI analyzes the information as much as the files (or folders)

set by the SET_BROWSE_NUM command. After analysis, the LSI
writes the result to the status register.

・If any play list is not selected, the command will not be accepted.

・This command moves the play list browsing cursor to the tune being

played.
・The LSI analyzes the information as much as the files (or folders)
set by the SET_BROWSE_NUM command. After analysis, the LSI
writes the result to the status register.

・If any play list is not selected, the command will not be accepted.

・This command specifies the full path and name of the file to be read

from the memory using the File Read function.

・If a file exists after receiving the command, open the specified file.

・The full path is 256 bytes at maximum (including drive letter (A:\), file

name and extension). Set this at the 5
If the length is less than 256 bytes, insert 0x00 at the end.
Insert ”\”(0x5C) for the delimiter between folder layers.

・The drive letter is "A:\" for USB and "B:\" for SD.

・You can also specify the path in a format without drive letter. In this

case, the length is 253 bytes at maximum.
・If the full path has a drive letter different from the one for the
memory being selected, an error occurs. (For example, "B:\" is set
for the full path when USB is selected.)
・This command specifies the file pointed by the memory browsing
cursor for the one to be read from the memory using the File Read
function.

・If a file exists after receiving the command, open the specified file.
・This command specifies the access data of the file to be read from

the memory using the File Read function.

・The access data is 6 bytes. Set it at the 5th-10th bytes.
・If a file exists after receiving the command, open the specified file.

th

-260th bytes.

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© 2012 ROHM Co., Ltd. All rights reserved.

2012.04 - Rev.

BU94702AKV

A

Technical Note

FOPEN_W 266 0x63 0x02 0x0

0x00

0

FCLOSE 4 0x63 0x03 0x0

0x00

0

SET_FRW_BUS 4 0x63 0x04 N M

FWRITE_DAT 4/260 0x63 0x05 N N

FREAD_DAT 6 0x63 0x06 N N

・This command specifies the full path, name, and update date
information of the file to be written to the memory using the File Write
function.

・After receiving the command, open the specified file.

・You can set the update date information in terms of year, month, day

and time.

・Set the update date information at the 5

th

-10th bytes in BCD format in
the order of year (upper), year (lower), month, day, hour, and
minute. If all the data of the update date information is set to 0x00,
the LSI considers that 0x20, 0x09, 0x01,0x01, 0x12, and 0x00 are
specified when processing the data.

・The full path is 256 bytes at maximum (including drive letter (A:\), file

name and extension). Set this at the 11

th

-266th bytes.

If the length is less than 256 bytes, insert 0x00 at the end.
Insert ”\”(0x5C) for the delimiter between folder layers.

・The drive letter is "A:\" for USB and "B:\" for SD.

・You can also specify the path in a format without drive letter. In this

case, the length is 253 bytes at maximum.
・If the full path has a drive letter different from the one for the
memory being selected, an error occurs. (For example, "B:\" is set
for the full path when USB is selected.)

・If the specified file does not exist, it should be created.
・A file with the same name that already exists will be deleted.
・After creating a file, the structure of the file creation folder (including

the intermediate folders) is changed. Thus, when using the
browsing function, you should start over browsing analysis.

・This command closes the file.
・After the File Read/Write function is completed, CLOSE the file.
・This command selects the BUS to be used with the File Read/Write

function.
When selecting the I2C bus, data of up to 256 bytes can be
read/written at one transfer.
When selecting the SPI bus, data up to 4 Kbytes can be read/written
at one transfer.
・Set the BUS type to be used with N at the 3rd byte. Select N from

the following. Any other settings will not accept the command.
N=0x00: Uses the I2C bus.
N=0x01: Uses the 8-bit SPI bus.
N=0x02: Uses the 16-bit SPI bus.
N=0x03: Uses the 32-bit SPI bus.

・Set a SPI mode with M at the 4

th

byte. Select M at the 4th byte from
the following. If any other setting is specified, the LSI does nothing.
If N=0x00, the following M values will become disabled.
M=0x00: Uses SPI mode 0. M=0x01: Uses SPI mode 1.
M=0x02: Uses SPI mode 2. M=0x03: Uses SPI mode 3.

・By default, N=0x00: "Uses the I2C bus" is set (M=0x00).
・This command specifies data size to be written and the data itself.
・At 0xN(16bit) in the 3

written at one transfer in Little Endian format.

・When using the I2C bus, set the data at the 5

rd

and 4th bytes, specify the data size to be

th

-260th bytes. Data of

up to 256 bytes can be sent at one time.

・When using the SPI bus, the LSI waits until the FWRREADY bit

turns 1 after this command is sent, and then starts transferring the
data through that bus. When the transferred data reaches the data
size specified by SPI transfer, the LSI starts writing the data to the
memory. Data of up to 4096 bytes can be sent at one time.

・If the specified data size does not match the data size actually sent,
this command is assumed to be an error.
・This command specifies the position of data to be read from the file

at File Read.

・Specify the data position to be read in the 3

rd

to 6th bytes in Little

Endian format.
・When using the I2C bus, send this command and then check that

the FRDREADY bit turns 1. Then, send the READ_FR_DATA
command. Data of up to 256 bytes can be read at one time.

・When using the SPI bus, send this command and then check that

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© 2012 ROHM Co., Ltd. All rights reserved.

2012.04 - Rev.

BU94702AKV

A

Technical Note

the FRDREADYA bit turns 1. Then, read the data from the SPI
bus. Data of up to 4096 bytes can be read at one time.

FDEL 260 0x63 0x07 0x0

0x00

0

FDEL_CURSOR 4 0x63 0x07 0x0

0x00

1

CD-DA
START_ENCODE 261 0x64 0x01 0x0

0x00

0

STOP_ENCODE 4 0x64 0x02 0x0

N

0

・This command deletes the file or folder specified by the full path.

・The full path is 256 bytes at maximum (including drive letter (A:\), file

name and extension). Set this at the 5th-260th bytes. If the length is
less than 256 bytes, insert 0x00 at the end. Insert ”\”(0x5C) for the
delimiter between folder layers.

・The drive letter is "A:\" for USB and "B:\" for SD.

・You can also specify the path in a format without drive letter. In this

case, the length is 253 bytes at maximum.
・If the full path has a drive letter different from the one for the
memory being selected, an error occurs. (For example, "B:\" is set
for the full path when USB is selected.)
・The command deletes a folder only when there is no file (or folder)
in it.
・After deleting a file or folder, the structure of the folder where the
deleted file (or folder) existed is changed. Thus, when using the
browsing function, you should start over browsing analysis.
・This function deletes the file or folder being pointed by the memory

browsing cursor.

・The command deletes a folder only when there is no file in it.
・After deletion, the cursor positions at the top of the folder where the

deleted file or folder existed. Then, the LSI analyzes the folder.

・This command specifies the full path, name and update date

information of the file to be written during encode, opens the file,
and starts encoding.

・After receiving the command and opening the file, the LSI brings the

data into the internal buffer and soon starts encoding it sequentially.

・Set the update date information at the 5

th

-10th bytes in BCD format in
the order of year (upper), year (lower), month, day, hour, and minute.
If all the data of the update date information is set to 0x00, the LSI
considers that 0x20, 0x09, 0x01, 0x01, 0x12, and, 0x00 are specified
when processing the data.

・The full path is 251 bytes at maximum (including drive letter (A:\), file

name, and extension). Set this at the 11

th

-261st bytes. If the length
is less than 251 bytes, insert 0x00 at the end. Insert ”\”(0x5C) for the
delimiter between folder layers.

・If the specified folder does not exist, it should be created.
・The drive letter is "A:\" for USB and "B:\" for SD.

・You can also specify the path in a format without drive letter. In this

case, the length is 248 bytes at maximum.
・If the full path has a drive letter different from the one for the
memory being selected, an error occurs. (For example, "B:\" is set
for the full path when USB is selected.)

・If the external memory is set to “file write enabled”, and the file name

is not set (0x00), the LSI will not accept the command.

・If any files having the same name exist, the LSI append a number

(1, 2….) to the end of each file name.

・By default, the file is not opened. The encode function is disabled.
・This command terminates encoding and closes the file.
・Select the operation for closing files at the 4

th

byte from the following. Any other settings will not accept the

4

th

byte. Select N at the

command.
N=0x00: Leaves the file and closes it.
N=0x01: Deletes the file and closes it.
・By default, N=0x00: "Leaves the file and closes it" is set.

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© 2012 ROHM Co., Ltd. All rights reserved.

2012.04 - Rev.

BU94702AKV

A

Technical Note

SET_COMP_MOD
E

SET_ENCODE_M
ODE

SET_ENCODE_P
RM

4 0x64 0x03 0x0

N

0

4 0x64 0x04 N M

8 0x64 0x05 N M

・This command sets the 3 pair data comparison and connection
function.
・Select N at the 4

th

byte from the following. Any other settings will
not accept the command.
N=0x00: Disables the 3 pair data comparison and connection
function.
N=0x01: Enables the 3 pair data comparison and connection
function.
・After receiving the command with “enabled” setting, the LSI

compares the data when the input data is valid, and brings the data
into the internal buffer when the 3 pair data is matched.

・After matching the data and starting fetching it into the internal

buffer, the LSI disables the comparison and connection function.

・When the command is set to “disabled”, the LSI brings the input data

into the internal buffer if it is valid.

・By default, the comparison and connection function is disabled.
・This command sets the encode format and the play status during

encode.
・Set the encode format with N at the 3rd byte. Select N from the

following. Any other settings will not accept the command.
N=0x00: Writes to MP3 external memory (USB,SD).
N=0x01: -(Not used)
N=0x02: Writes to WAV external memory (USB,SD).
N=0x03: -(Not used)
・Set the play status during encode with M at the 4

at the 4

th

byte from the following. Any other settings will not accept

th

byte. Select M

the command.
M=0x00: Does not play.
M=0x01: - ,
M=0x02: ­ M=0x03: Input through (Thins out pre-encoded input data internally

by 44.1 kHz and outputs it to DAC.)
・By default, N=0x00: "Writes to MP3 external memory (USB,SD)",
and M=0x00: "Does not play" are set.
・Do this setting before opening the encode file (before
START_ENCODE). Any change made after opening the file will not
be accepted.
・Set the format of the input from CD with N at the 3

rd

byte. Select N
from the following. Any other settings will not accept the
command.

N=0x00: Inputs in I2S (32 fs) format.
N=0x01: Inputs in I2S (48 fs) format.
N=0x02: Inputs in I2S (64 fs) format.
N=0x04: Inputs in EIAJ (32 fs) format.
N=0x05: Inputs in EIAJ (48 fs) format.
N=0x06: Inputs in EIAJ (64 fs) format.
・Set the sampling rate of the input from CD with M at the 4th byte.
Select M from the following. Any other settings will not accept the
command.
M=0x00: 32 kHz, M=0x01: 44.1 kHz, M=0x02: 48 kHz
・Set the bit rate during MP3 encode with L at the 5

th

byte. Select L
from the following. Any other settings will not accept the command.
L=0x00: 32 kbps, L=0x01: 64 kbps, L=0x02: 128 kbps
L=0x03: 192 kbps, L=0x04: 256 kbps, L=0x05: 320 kbps

・By default, N=0x05: "EIAJ (48 fs)", M=0x01: "44.1 kHz", and L=0x02:

"128 kbps" are set.

・Do this setting before opening the encode file (before START_ENC).

Any change after opening the file will not be accepted.
・Embed 6

th

to 8th bytes with 0x00.

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© 2012 ROHM Co., Ltd. All rights reserved.

2012.04 - Rev.

BU94702AKV

A

Technical Note

SET_ENCODE_TA

68 0x64 0x06 N M

G

CD-ROM
START_CDROM 4 0x65 0x00 N M

STOP_CDROM 4 0x65 0x01 0x0

0x00

1

START_CDANA 4 or8 0x65 0x01 0x0

0x00

2

STOP_CDANA 4 0x65 0x01 0x0

0x00

3

・This command sets ID3 V2.3 TAG to be written during encode.
・Up to 64 bytes of TAG can be written to TITLE, ARTIST, ALBUM,

and GENRE.
・Set the TAG type with N at the 3

rd

byte. Select N from the

following. Any other settings will not accept the command.
N=0x00: TITLE, N=0x01: ARTIST,
N=0x02: ALBUM, N=0x03: GENRE
・Set the TAG character code with M at the 4

th

byte. Select M from
the following. Any other settings will not accept the command.
M=0x00: ISO-8859-1 or no specification (Native[Shift-JIS etc.])
M=0x01: UTF-16 (Unicode with BOM)
・When specifying M=0x01, BOM(U+FEFF) is required to identify
Endian.
・Set the data at the 5

th

-68th bytes in the left aligned format. If the
data to be written is less than 64 bytes, embed the empty bytes with
0x00s.
・Do this setting before opening the encode file (before
START_ENCODE). Any change after opening the file will not be
accepted.

・When closing the file (STOP_ENCODE), this setting is cleared.

・This command enables CD-ROM input.
・Set the ECC retry count with N at the 3

rd

byte. Specify N within the
range from 0x00 to 0x0F. Any other settings will not accept the
command.
・When N=0x00, error correction is performed only for EDC. When
N=0x01 to 0x0F, the LSI executes EDC and then executes ECC as
many times as specified (retry specification).

・Set the format of the input from CD with M at the 4

th

byte. Select M
from the following. Any other settings will not accept the command.
M=0x00: Inputs in I2S (32fs) format.

M=0x01: Inputs in I2S (48fs) format.

M=0x02: Inputs in I2S (64fs) format.

M=0x04: Inputs in EIAJ (32fs) format.
M=0x05: Inputs in EIAJ (48fs) format.

M=0x06: Inputs in EIAJ (64fs) format.
・By default, N=0x03: "ECC retry count 3" and M=0x05: "Inputs in
EIAJ (48fs) format" are set.

・By default, CD-ROM input is disabled.
・This command disables CD-ROM input.
・The command cancels the SEEK request (necessary LBN request).
・When the LSI is analyzing the CD-ROM file system, the command

stops analysis.
・When the LSI is playing or copying a CD-ROM file, the command

forcibly stop the operation.

・This command starts analyzing the CD-ROM file system.
・After receiving the command, the LSI requests the necessary LBN.
・When the necessary LBN data is input, the LSI analyzes the data.

After analysis, it outputs the analyzed result to the status register.
・If the command length is less than 8 bytes, the LSI searches the
CD-ROM file system information starting from LBN=0.
・To analyze the file system information after the 2

nd

session on the
multi-session disk, you must specify the starting LBN. In this case,
specify the LBN in which the file system information resides (after the
start position of this session) at the 5

th-8th

bytes in Little Endian

format.

・Reset the acquisition state of a file/folder information.
・This command stops or suspends analysis of the CD-ROM file

system.
・If the file system analysis is not completed, you can restart it.

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© 2012 ROHM Co., Ltd. All rights reserved.

2012.04 - Rev.

BU94702AKV

A

Technical Note

CD_SET_VD 4 0x65 0x02 0x0

0

CD_SET_LBN 12- 0x65 0x03 0x0

0

Table 6.4.1.2 Command enable/disable in each system operation mode

N

・This command set Volume Descriptor, which is preferred during the
CD-ROM file system analysis, at the 4th byte.

・Select N at the 4

accept the command.
N=0x00: PVD preferred
N=0x01: SVD preferred
・By default, N=0x00: "PVD preferred" is set.

N

・This command sets the information on the file to be played (first

LBN, file size, file name and file kind).

・Select N at the 4th byte from the following. Any other settings will not

accept the command.

N=0x01:MP3 , N=0x02:WMA, N=0x03:AAC , N=0x04:WAV

Please specify the value read by the READ_CD_FILE command as

it is.

・Set the LBN data at the 5th-8th bytes in Little Endian format.
・Set the size data at the 9th-12th bytes in Little Endian format.
・Set the file name at the 13th and following bytes with NUL (0x00) at

the end. If the command length is less than 14 bytes, do not set the
file name. In this case, the file name is obtained as a null character
string with some commands such as READ_PFILE_NAME.
・After receiving the command, the LSI requests necessary LBN.

When the valid data is input, the LSI starts decoding the data.

th

byte from the following. Any other settings will not

Command Command enable/disable in

each system operation mode

CONFIG PLAYER FILE

RW

CONFIG
CHG_SYSTEM_M

ODE
STOP

ABORT

CHG_DEV

DIS_WDT

SET_WDT

SET_SORT

SET_12MOUT

SET_LANG

SET_MP3

SET_BROWSE_N
UM

SET_PLAYINFO_N
UM

SET_LBIT

SET_IPL_UNIT

SET_UTPKT

GET_DEV_FREE

SET_LANG2

SET_OUTLANG

SET_TOUT_TUR

SET_IDL_TIME

SET_TUR_PASS

SET_THR1

SET_THR2

SET_THR3

PLAY control

○ ○ ○ ○ ○ ○ ○ ○ ○ × × × × ○

○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○
○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ × ｘ
○ ○ ○ ○ ○ ○ ○ ○ ○ × × × × ○
○ ○ ○ ○ ○ ○ ○ ○ × × × × × ×
○ ○ ○ ○ ○ ○ ○ ○ × × × × × ○
○ ○ ○ ○ ○ ○ ○ ○ × × × × × ×
○ ○ ○ ○ ○ ○ ○ ○ × × × × × ○
○ × × × × × × ○ × × × × × ×
○ × × × × × × ○ × × × × × ×
○ ○ ○ ○ ○ ○ ○ ○ × × × × × ×

○ ○ ○ ○ ○ ○ ○ ○ × × × × × ×

○ ○ ○ ○ ○ ○ ○ ○ × × × × × ○
○ ○ ○ ○ ○ ○ ○ ○ × ○ ○ × × ○
○ × × × × × × ○ × × × × × ×
○ ○ ○ ○ ○ ○ ○ ○ × × × × × ×
○
○
○
○
○
○
○
○

× × × × × ×

× × × × × ×

× × × × × ×

× × × × × ×

× × × × × ×

× × × × × ×

× × × × × ×

× × × × × ×

PLAYL
IST

Command enable/disable

in each status

IPL
WRITE

CD-DA CD-R

OM

STOP PLAY SEAR

CH
(mode)

× × × × × ×

○

× × × × × ×

○

× × × × × ×

○

× × × × × ×

○

× × × × × ×

○

× × × × × ×

○

× × × × × ×

○

× × × × × ×

○

SEAR

Analy

CH

ze

(file)

Write ERRO

R

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47/85

© 2012 ROHM Co., Ltd. All rights reserved.

2012.04 - Rev.

BU94702AKV

A

Technical Note

PLAY

PAUSE

HOME

PLAYMODE

VOL+

VOL-

REPEAT

RANDOM

FF

FB

FOL+

FOL-

PLAY_RESUME

PLAY Setting
SET_DOUT

SET_EQ

SET_VOL

SET_NEXT

SET_REPRAND

SET_TAG

SET_TOC

SET_PRM

BROWSING
ANALYZE_ROOT

PLAY_CURSOR

GET_TAG_CURSO
R

GET_PATH_CURS
OR

PLAY_DIRECT

MOV_NEXT

MOV_PREV

MOV_UP

MOV_DOWN

MOV_HOME

MOV_PLAYING

MOV_DIRECT

SET_EXTENSION

PLAYLIST
SET_PLAYLIST

SET_PLAYLIST_DI
RECT

SET_PLAYLIST_C
URSOR

PLST_PLAY_CUR
SOR

PLST_GET_TAG_
CURSOR

PLST_MOV_NEXT

PLST_MOV_PREV

PLST_MOV_HOME

PLST_MOV_PLAYI
NG

FILE RW
FOPEN_R

FOPEN_R_CURSO
R

○ ○ × ○ × × ○ ○ ○ × × × × ×
× ○ × ○ × × ○ ○ ○ × × × × ×
× ○ × ○ × × × ○ ○ × × × × ×
× ○ × ○ × × ○ ○ ○ × × × × ×
○ ○ ○ ○ ○ ○ ○ ○ ○ × × × × ○
○ ○ ○ ○ ○ ○ ○ ○ ○ × × × × ○
× ○ × ○ × × ○ ○ ○ × × × × ×
× ○ × ○ × × ○ ○ ○ × × × × ×
× ○ × ○ × × ○ ○ ○ × × × × ×
× ○ × ○ × × ○ ○ ○ × × × × ×
× ○ × × × × ○ ○ ○ × × × × ×
× ○ × × × × ○ ○ ○ × × × × ×
× ○ × ○ × × × ○ ○ × × × × ×

○ ○ ○ ○ ○ ○ ○ ○ ○ × × × × ○
○ ○ ○ ○ ○ ○ ○ ○ ○ × × × × ○
○ ○ ○ ○ ○ ○ ○ ○ ○ × × × × ○
× ○ × ○ × × ○ ○ ○ × × × × ×
× ○ × ○ × × ○ ○ ○ × × × × ×
× ○ × ○ × × ○ ○ ○ × × × × ×
× ○ × × × × ○ ○ ○ × × × × ×
× ○ × ○ × × ○ ○ ○ × × × × ×

× ○ ○ ○ × × × ○ ○ ｘ ○ × × ×
× ○ × × × × × ○ ○ ｘ ｘ × × ×
× ○ × × × × × ○ ○ ｘ ○ × × ×

× ○ ○ ○ × × × ○ ○ ｘ ○ × × ×

× ○ × × × × × ○ ○ ｘ ｘ × × ×
× ○ ○ ○ × × × ○ ○ ｘ ○ × × ×
× ○ ○ ○ × × × ○ ○ ｘ ○ × × ×
× ○ ○ ○ × × × ○ ○ ｘ ○ × × ×
× ○ ○ ○ × × × ○ ○ ｘ ○ × × ×
× ○ ○ ○ × × × ○ ○ ｘ ○ × × ×
× ○ × × × × × × ○ ｘ × × × ×
× ○ × ○ × × × ○ ○ ｘ ○ × × ×
× ○ ○ ○ × × ○ ○ ○ ○ ○ × × ×

× × × ○ × × × ○ ○ × × × × ×
× × × ○ × × × ○ ○ × × × × ×

× × × ○ × × × ○ ○ × × × × ×

× × × ○ × × × ○ ○ × × × × ×

× × × ○ × × × ○ ○ × × × × ×

× × × ○ × × × ○ ○ × × × × ×
× × × ○ × × × ○ ○ × × × × ×
× × × ○ × × × ○ ○ × × × × ×
× × × ○ × × × ○ ○ × × × × ×

× × ○ × × × × ○ × × × × × ×
× × ○ × × × × ○ × × × × × ×

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48/85

© 2012 ROHM Co., Ltd. All rights reserved.

2012.04 - Rev.

BU94702AKV

A

Technical Note

FOPEN_R_DIREC
T

FOPEN_W

FCLOSE

SET_FRW_BUS

FWRITE_DAT

FREAD_DAT

FDEL

FDEL_CURSOR

CD-DA
START_ENCODE

STOP_ENCODE

SET_COMP_MOD
E

SET_ENCODE_M
ODE

SET_ENCODE_PR
M

SET_ENCODE_TA
G

CD-ROM
START_CDROM

STOP_CDROM

START_CDANA

STOP_CDANA

CD_SET_VD

CD_SET_LBN

○=enable×=disable

× × ○ × × × × ○ × × × × × ×

× × ○ × × × × ○ × × × × × ×
× × ○ × × × × ○ × × × × × ×
× × ○ × × × × ○ × × × × × ×
× × ○ × × × × ○ × × × × × ×
× × ○ × × × × ○ × × × × × ×
× × ○ × × × × ○ × × × × × ×
× × ○ × × × × ○ × × × × × ×

× × × × × ○ × ○ × × × × × ×
× × × × × ○ × ○ ○ ○ × ○ ○ ×
× × × × × ○ × × ○ × × × × ×

× × × × × ○ × ○ × × × × × ×

× × × × × ○ × ○ × × × × × ×

× × × × × ○ × ○ × × × × × ×

× × × × × × ○ ○ × × × × × ×
× × × × × × ○ ○ ○ ○ ○ ○ × ×
× × × × × × ○ ○ ○ × × × × ×
× × × × × × ○ ○ ○ × × × × ×
× × × × × × ○ ○ × × × × × ×
× × × × × × ○ ○ ○ × × × × ×

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6.4.2 Status output
The operation information, such as internal statuses, play time, folders, files and Tags, is output using a I2C interface.

The statuses shown in Table 6.4.2.1 MODE2 Status Register Map are output.
When reading status via I2C, the OFFSET position is automatically incremented after reading byte data. However, by
issuing the I2C start condition, the OFFSET position is reset to OFFSET specified by the previous command.
To read statuses, two methods are available: to specify OFFSET of the status register map and read any bytes
continuously from the OFFSET position; and to read byte data by a command without specifying the OFFSET position.
Table 6.4.2.2 shows the status output commands.
Byte data, when reading via I2C, is output in Little Endian format.
When read over OFFSET=0x140, OFFSET does not return to 0x00, therefore the read value turns into an unfixed
value.

Technical Note

Table 6.4.2.1 MODE2 Status Register Map

OFFSE

T

(MSB) (LSB)

0x00 STATUS1 ERROR SEARCH BUSY MCHNG STOP PAUSE PLAY
0x01 STATUS2 IRPTO 0 STOP_INF

0x02 STATUS3 USBINS SDINS USBFILE SDFILE MDEVUSB MDEVSD PDEVUSB PDEVSD

0x03 STATUS4 SEL_TOC TINFUSB TINFSD SET_TAG ANA_TAG TAGINFO
0x04 STATUS5 0 SEL_USB

0x05 STATUS6 PRECOM

0x06 VOLINF 0 0 0 VOLINF
0x07 DOUTINF EQINF DOUTINF
0x08 PMODEINF REPEATI

0x09 SEL_MP3 0 0 0 0 WDT_RFLG 12MOUT SET_SORT SET_MP3

0x0A PSEC PSECH PSECL

0x0B PMINL PMINLH PMINLL
0x0C PMINH PMIHH PMINHL
0x0D TSEC TSECH TSECL

0x0E TMINL TMINLH TMINLL

0x0F TMINH TMINHH TMINHL

0x10 LANGL LANGL

0x11 LANGH LANGH

0x12 PFOLNL PFOLNL

0x13 PFOLNH PFOLNH

0x14 PFILENFLL PFILENLL

0x15 PFILENFLH PFILENLH

0x16 PFILENFHL PFILENHL

0x17 PFILENFHH PFILENH

0x18 PFILENMLL PFILENLL

0x19 PFILENMLH PFILENLH

0x1A PFILENMHL PFILENHL

0x1B PFILENMHH PFILENH

0x1C TFOLMEML TFOLMEM

0x1D TFOLMEMH TFOLMEM

0x1E TFILEMEMLL TFILEME

0x1F TFILEMEMLH TFILEME

0x20 TFILEMEMHL TFILEME

0x21 TFILEMEMHH TFILEME

Status bit7 bit6 bit5 bit4 bit3 bit2 bit1 bit0

INIT_END PRECOM RES_ERR DEC_ERR

O

FBP FFP PLAYFILE

SD

STAT

NF

H

H

L

H

MLL

MLH

MHL

MHH

SETNEXTI

NF

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Technical Note

0x22 BROWSESTAT ANA_ERR 0 GET_PAT

H_END

0x23 NUMANAFOLL

L

0x24 NUMANAFOLL

H

0x25 NUMANAFOL

HL

0x26 NUMANAFOL

HH

0x27 TFILEANAFOL

LL

0x28 TFILEANAFOL

LH

0x29 TFILEANAFOL

HL

0x2A TFILEANAFOL

HH

0x2B TFOLANAFOL

L

0x2C TFOLANAFOL

H

0x2D TFOLANAHEI

RL

0x2E PLISTPLAY PLIST_GT

0x2F FIOSTAT FIOERR 0 FIORW FIOOPEN FRDREADY FWRREA

0x30 FIOSET FIOBUS FIOSPIMD FIOOPE

0x31 IPLWMODE 0 IPLWUNIT IPLWMOD

0x32 ENCON ENCERR BUFFULL ENCEND ENCCLOSE MEMACC ENC ENCSEAR

0x33 COMPON TAGW ENCMP3 ENCMEMW ENCMEM 0 COMPOP

0x34 ENC_PLAY ENC_INF

0x35 ENC_BITRATE ENC_INS

0x36 CDROMON BUFFULL 0 SEEK CDROMA

0x37 MEMINFO MEMINFO 0 0 IRPTOINT IRPTODE

0x38 - COMAREA COMARE

0x13F

OFFSE

T

0x00 STATUS1 7 ERROR ERROR situation 0 ; Nothing error, 1 ; Error

6:5 SEARCH SEARCH situation

4 BUSY BUSY situation 0: non-BUSY , 1:BUSY
3 MCHNG Music change detection 0: Under a music end / stop, 1: Stop after search/

2 STOP STOP state 0: not stopped, 1: Under a stop
1 PAUSE PAUSE state 0: not stopped, 1: Under a stop
0 PLAY Playing state 0: not reproducing, 1: Under Playing

0x01 STATUS2 7 IRPTO IRPTO interruption state 0: Nothing interruption, 1;interruption

6 0 0
5:4 STOP_INFO Stop state detailed information

3 INIT_END The completion situation of initialization 0: Incomplete 1: When a

Status bit NAME Contents

NUMANAF

NUMANAF

NUMANAF

NUMANAF

TFILEANA

TFILEANA

TFILEANA

TFILEANA

TFOLANA

TFOLANA

TFOLANA

AG_END

OLLL

OLLH

OLHL

OLHH

FOLLL

FOLLH

FOLHL

FOLHH

FOLL

FOLH

FOLL

PLIST_TA

G_EXIST

ORM

R

A

0: Search stop, 1: Under a search (file search) ,
2: Under a search (under device recognition)

Playing.

0: It is except during the stop/stop after device mount, 1: Stop pulled [ music ]
out the head, 2: Error stop, 3: Stop by the RPT_OFF function

program is normally loaded from FLASH completed and (set to 1 at the time
of either of the followings) connected and a program is normally downloaded

PLIST_BR

_ERR

EACT

GET_TAG

_END

PLIST_BR

_BSY

IPLWMOD

EEND

ENC_PLA

ENC_BITR

NAERR

PLISTERR 0 PLISTOPEN PLISTPLA

IPLWEERR IPLWEXIST IPLSERCH IPLWMOD

CDROMA

NAEND

GET_TAG_ID ANA_CUR

Y

FIOSEAR

DY

E2

Y

ATE

CDROMA

CH

CH

COMPOP

E１

NABUSY

FIOMODE

E

ENCON

COMPON

CDROMO

N

VICE

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from the host who has connected

2 PRECOM The last command situation 0;Normal receptionist, 1;Abnormalities

(un-receiving)
1 RES_ERR Resume error 0: With no error, 1: Error
0 DEC_ERR Decoding error 0: With no error, 1: Error

0x02 STATUS3 7 USBINS USB connection detection 0:USB un-connecting, 1:USB connection

detection
6 SDINS SD connection detection 0:SD un-connecting, 1:SD connection detection
5 USBFILE Playable file existence in a USB memory 0;Nothing, 1;existence
4 SDFILE Playable file existence in a SD memory 0;Nothing, 1;existence
3 MDEVUSB USB memory recognition situation 0: Un-recognizing, 1: Recognition
2 MDEVSD SD memory recognition situation 0: Un-recognizing, 1: Recognition
1 PDEVUSB USB memory situation 0: Under a stop, 1: Under Playing/TAG analysis
0 PDEVSD SD memory situation 0: Under a stop, 1: Under Playing/TAG analysis

0x03 STATUS4 7 SEL_TOC TOC analysis setup 0:TOC analysis OFF , 1:TOC analisis ON

6 TINFUSB Acquisition of total file/folder number in a USB memory.

0: Un-acquiring, 1: Finishing acquisition
5 TINFSD Acquisition of total file/folder number in a SD memory.

0: Un-acquiring, 1: Finishing acquisition
4 SET_TAG TAG analysis setup 0:TAG analysis OFF, 1:TAG analysis ON
3 ANA_TAG TAG analysis situation 0;TAG analysis stop, 1;Under TAG analysis
2:0 TAGINFO Existence TAG kind

0:ID 3V1, 1:ID 3V2, 2;With WMA, 3;AAC, 4:WAV, and 7: no TAG information

0x04 STATUS5 7 0 0

6 SEL_USBSD Device recognition priority situation 0:SD>USB 1:USB>SD
5 FBP Fast back Playing situation 0: normal Playing, 1:fast-back Playing
4 FFP Fast forward Playing situation 0: normal Playing, 1:fast-forward Playing
3:0 PLAYFILE Playing file information 1:MP3, 2:WMA, 3:AAC, 4:WAV

0x05 STATUS6 7:0 PRECOMSTA

T

0x06 VOLINF 7:5 0 0

4:0 VOLINF Volume setting information. The value set up by SET_VOL [4:0] is

0x07 DOUTINF 7:4 EQINF EQ setting information. The value set up by SET_EQ [3:0] is outputted.

3:0 DOUTINF Audio output setting information. The value set up by SET_DOUT [3:0] is

0x08 PMODEINF 7:4 REPEATINF REPEAT MODE setting information. The value set up by SET_REPRAND

3:0 SETNEXTINF PLAY NEXT MODE setting information. The value set up by SET_NEXT [3:0]

0x09 SEL_MP3 7 0 0

6 0 0
5 0 0
4 0 0
3 WDT_RFLG Monitor register for WDT 0:after RESET
2 12MOUT 12MHz clock output 0:OFF, 1:ON
1 SET_SORT file sorting functional setup 0;SORT function OFF, 1;SORT function

0 SET_MP3 MP3 file Playing setup

0x0A PSEC 7:4 PSECH Playing time second information [7:4] x 10 seconds

3:0 PSECL Playing time second information [3:0] x 1 second

0x0B PMINL 7:4 PMINLH Playing time minutes information [7:4] x 10 minutes

3:0 PMINLL Playing time minutes information [3:0] x 1 minute

0x0C PMINH 7:4 PMINHH Playing time minutes information [7:4] x 1000 minutes

3:0 PMINHL Playing time minutes information [3:0] x 100 minutes

0x0D TSEC 7:4 TSECH 1 track time second information [7:4] x 10 seconds

3:0 TSECL 1 track time second information [3:0] x 1 second

0x0E TMINL 7:4 TMINLH 1 track time minutes information [7:4] x 10 minutes

3:0 TMINLL 1 track time minutes information [3:0] x 1 minute

The last command receptionist situation detailed information ; The last

command outputs whether it received normally.

A state is held to the following command. A state is not cleared by the lead

command.

The 0th bit is the same as that of PRECOM status. They are the contents at

the time of abnormalities except it.

outputted.

outputted.

[3:0] is outputted.

is outputted.

effective

0;Extensions mp1 and mp2, mp3 Playing, 1;Reproduce only extension mp3.

Technical Note

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0x0F TMINH 7:4 TMINHH 1 track time minutes information [7:4] x 1000 minutes

3:0 TMINHL 1 track time minutes information [3:0] x 100 minutes

0x10 LANGL 7:0 LANGL TAG character code information lower byte [7:0]
0x11 LANGH 7:0 LANGH TAG character code information higher byte [15:8]
0x12 PFOLNL 7:0 PFOLNL Playing folder number in memory. Lower byte [7:0]

ROOT becomes No.1. A number is shaken in order of sorting.

0x13 PFOLNH 7:0 PFOLNH Playing folder number in memory. Higher rank byte [15:8]
0x14 PFILENFLL 7:0 PFILENLL Playing file number in the present folder. [15:0], lower byte [7:0], a number is

shaken from No.1 in order of sorting.

0x15 PFILENFLH 7:0 PFILENLH Playing file number in the present folder. [15:0], Higher rank byte [15:8]
0x16 PFILENFHL 7:0 PFILENHL Playing file number in the present folder. [31:16], Low rank byte [23:16]
0x17 PFILENFHH 7:0 PFILENHH Playing file number in the present folder. [31:16], Higher rank byte [31:24]
0x18 PFILENMLL 7:0 PFILENLL Playing file number in the memory. [15:0] Low rank byte [7:0]

0x19 PFILENMLH 7:0 PFILENLH Playing file number in the memory. [15:0] Higher rank byte [15:8]
0x1A PFILENMHL 7:0 PFILENHL Playing file number in the memory. [31:16] Low rank byte [23:16]
0x1B PFILENMHH 7:0 PFILENHH Playing file number in the memory. [31:16] Higher rank byte [31:24]
0x1C TFOLMEML 7:0 TFOLMEML The number of total folders in a memory. low rank byte [7:0]
0x1D TFOLMEMH 7:0 TFOLMEMH The number of total folders in a memory. higher rank byte [15:8]
0x1E TFILEMEML

L

0x1F TFILEMEML

H

0x20 TFILEMEMH

L

0x21 TFILEMEMH

H

0x22 BROWSEST

AT
6 0 ­ 5 GET_PATH_E

4 GET_TAG_EN

3:1 GET_TAG_ID Existence TAG kind

0 ANA_CUR Cursor position entry analysis. 0;Analysis stop, 1;Under analysis

0x23 NUMANAFO

LLL

0x24 NUMANAFO

LLH

0x25 NUMANAFO

LHL

0x26 NUMANAFO

LHH

0x27 TFILEANAF

OLLL

0x28 TFILEANAF

OLLH

0x29 TFILEANAF

OLHL

0x2A TFILEANAF

OLHH

0x2B TFOLANAF

OLL

0x2C TFOLANAF

OLH

0x2D TFOLANAH

EIRL

0x2E PLISTPLAY 7 PLIST_GTAG_

6 PLIST_TAG_E

5 PLIST_BR_ER Browsing error situation in Play LIST. 0: Normal end 1: Error

7:0 TFILEMEMLL The number of total files in memory. [15:0] low-rank byte [7:0]

7:0 TFILEMEMLH The number of total files in memory. [15:0] higher-rank [15:8]

7:0 TFILEMEMHL The number of total files in memory. [31:16] low-rank byte [23:16]

7:0 TFILEMEMHH The number of total files in memory. [31:16] higher-rank byte [31:24]

7 ANA_ERR browsing analysis Error 0: With no error 1: Error-generate in analysis.

Cursor position folder path analysis situation

ND

D

7:0 NUMANAFOL

LL

7:0 NUMANAFOL

LH

7:0 NUMANAFOL

HL

7:0 NUMANAFOL

HH

7:0 TFILEANAFOL

LL

7:0 TFILEANAFOL

LH

7:0 TFILEANAFOL

HL

7:0 TFILEANAFOL

HH

7:0 TFOLANAFOL

L

7:0 TFOLANAFOL

H

7:0 TFOLANAHEI

RL

END

XIST

0;Under folder path un-analyzing/analysis, 1;Finishing of folder path analysis
Cursor position TAG analysis situation
0: Under TAG un-analyzing/analysis, 1: Finishing of TAG analysis

0:ID 3V1, 1:ID 3V2, 2;With WMA, 3;AAC, 4:WAV, and 7: no TAG information

Cursor position number in a cursor existence folder [15:0]
The entry number which the cursor within the folder in which low rank byte
[7:0] cursor exists has pointed out is outputted. A number is shaken from
No.1 in order of sorting in a folder.

Cursor position number in a cursor existence folder [15:0] Higher rank byte
[15:8]

Cursor position number in a cursor existence folder [31:16] Low rank byte
[23:16]

Cursor position number in a cursor existence folder [31:16] Higher rank byte
[31:24]

The number of files total in a cursor existence folder [15:0] Low rank byte
[7:0]

The number of files total in a cursor existence folder [15:0] Higher rank byte
[15:8]

The number of files total in a cursor existence folder [31:16] Low rank byte
[23:16]

The number of files total in a cursor existence folder [31:16] Higher rank byte
[31:24]

The number of subfolders total in a cursor existence folder [15:0] Low rank
byte [7:0]

The number of subfolders total in a cursor existence folder [15:0] Higher rank
byte [15:8]

The classes number of cursor existence folder [7:0] A ROOT class is set to 1.

TAG analysis situation on Browsing cursor position in Play LIST
0: Under TAG un-analyzing / analysis , 1:End of TAG analysis
TAG existence situation on Browsing cursor position in Play LIST
0: With no TAG, 1: with TAG

Technical Note

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R

4 PLIST_BR_BS

Y
3 PLISTERR Situation support to Play LIST. 0: With no error, 1: format Error.
2 0 0
1 PLISTOPEN PLAY LIST file setting situation. 0;Un-setting up, 1;Play List setuped
0 PLISTPLAY PLAY LIST MODE effective/invalid. 0: invalid, 1 :P LAY LIST MODE is

0x2F FIOSTAT 7 FIOERR FILE IO Error situation 0: With no Error, 1:Error

6 0 0
5 FIORW FILE IO Read/Write mode 0:Read mode, 1:Write mode
4 FIOOPEN FILE OPEN state 0: Un-open 1;during file open
3 FRDREADY Read-out FIFO preparation situation 0:Under preparation, 1:Preparation

2 FWRREADY Write-in FIFO preparation situation 0:Under preparation, 1:Preparation

1 FIOSEARCH FILE IO processing situation 0:Processing stop, 1:Under processing
0 FIOMODE FILE IO mode effective/invalid 0;invalid 1; effective

0x30 FIOSET 7:6 FIOBUS FILE IO use BUS kind setup. 0:I2C, 1:SPI (8 bits), 2:SPI (16 bits), 2:SPI (32

5:4 FIOSPIMD FILE IO SPI mode setup. 0:SPI MODE0, 1:SPI MODE1, 2:SPI MODE2,

3:0 FIOOPE The contents situation of FILE IO processing

0x31 IPLWMODE 7 0 0

6 IPLWUNIT IPL FLASH ROM rewriting unit setup. 0;Page unit, 1;Byte unit
5 IPLWMODEA

CT

4 IPLWMODEE

ND
3 IPLWEERR IPL FLASH ROM Write Error Situation. 0;With no Error, 1;Write Error
2 IPLWEXIST File existence situation for rewriting in a memory. 0;With no file, 1;with a file
1 IPLSERCH File search situation for rewriting in a memory. 0;Search stop, 1;Under

0 IPLWMODE IPL FLASH ROM rewriting mode effective/invalid 0;invalid, 1,effective

0x32 ENCON 7 ENCERR Encode Error situation 0;With no Error , 1;Error

6 BUFFULL Inside buffer FULL state for CD input 0;Not-FULL, 1:FULL
5 ENCEND Encoding end situation. 0;not ended, 1;File closed and finished
4 ENCCLOSE File Close operation situation 0;Stop, 1;Under Close operation
3 MEMACC External memory write-in situation 0;Stop, 1;Under writing
2 ENC Encoding operation situation 0;Stop, 1;Under encoding operation
1 ENCSEARCH Encoding preparation situation 0;Under preparation, 1;Preparation O.K.

0 ENCON Encoding mode effective/invalid 0;invalid , 1; effective

0x33 COMPON 7 TAGW TAG write-in setting when encoding. 0: Nothing 1:TAG write-in ON

6 ENCMP3 Encoding format setup 0;WAV, 1;MP3
5 ENCMEMW external memory write-in setup on encoding. 0;invalid, 1; memory writing

4 ENCMEM The present external memory selection situation 0:SD, 1:USB
3 0 0
2 COMPOPE2 Comparison connection operation result situation

1 COMPOPE1 Comparison connection operation situation 0;Stop, 1;Under comparison
0 COMPON Comparison connection mode effective/invalid 0;invalid, 1;effective

0x34 ENC_PLAY 7:4 ENC_INFORM Input format setup from CD SET_ENCODE_PRM (3rd byte)

3:0 ENC_PLAY Playing situation at the time of encoding. 0;With no Playing , 3;Input

0x35 ENC_BITRA

TE

3:0 ENC_BITRAT

0x36 CDROMON 7 BUFFULL Inside buffer state of CD input 0;not FULL, 1;FULL

6 0 0
5 SEEK CD-ROM function SEEK demand situation. 0;Nothing, 1:SEEK request
4 CDROMANAE

7:4 ENC_INSR Input sample rate setup SET_ENCODE_PRM (4th byte)

E

RR

Browsing BUSY situation in Play LIST 0:Not-BUSY, 1:BUSY (under
analysis)

effective

O.K.

O.K. (it is used only at the time of SPI bus use)

bits)

3:SPI MODE3

0;With no processing , 1;OPEN, 2;Read, 3;Write, 4;Close, 5;Delete

IPL FLASH ROM rewriting operation situation. 0;Stop, 1;Under operation

IPL FLASH ROM rewriting processing end situation. 0;during operation,
1;End

search

(data input possible state)

effective

0;Un-connecting, 1;Finishing [ connection ]

through SET_ENCODE_MODE

Bit rate setup when MP3 encoding. SET_ENCODE_PRM (5th byte)

CD-ROM file analysis error situation 0;no Error, 1: with Error

Technical Note

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Technical Note

3:2 CDROMANAE

CD-ROM file analysis end situation 0;Un-analyzing , 2: Analysis end

ND
1 CDROMANAB

CD-ROM file analysis situation 0;Stop, 1;Under analysis

USY

0 CDROMON CD-ROM mode effective/invalid 0;invalid , 1;effective

0x37 MEMINFO 7:4 MEMINFO Memory device information chosen now

3 0 0
2 0 0
1 IRPTOINT Interrupt packet existence flag 0;Nothing, 1;with a packet
0 IRPTODEVICE Device with two or more Config(s) 0:Config singular number, 1:Config

plurality

0x38 COMAREA 7:0 COMAREA Data common area The contents change with status read-out commands.

- (When read-out exceeding OFFSET=0x140 is performed, OFFSET does not
return to 0x00, but the value read becomes unfixed)

0x13F

Table 6.4.2.2 MODE2 Status Output Commands

Command name

READ_BUFF 4 0x6C 0x00 N M Arbitrary

READ_STATUS 4 0x6D 0x00 0x00 0x00 6

READ_PSET 4 0x6D 0x00 0x01 0x00 4

READ_PTIME 4 0x6D 0x00 0x02 0x00 6

READ_LANG 4 0x6D 0x00 0x02 0x01 2

READ_PNUM 4 0x6D 0x00 0x02 0x02 10

READ_TNUM 4 0x6D 0x00 0x02 0x03 6

READ_FNUM 4 0x6D 0x00 0x02 0x04 4

READ_PFILE_NAM
E

READ_PFOL_NAM
E

READ_PFILE_TAG 4 0x6D 0x00 0x05 N 130

READ_RESUME_IN
FO

Comma
nd

Byte
length

Com
man

Status STATUS

d

1st 2nd 3rd 4th

4 0x6D 0x00 0x03 N 130

4 0x6D 0x00 0x04 0x00 130

4 0x6D 0x00 0x06 0x00 42

The
number of
output
bytes

・Output the arbitrary number data of bytes from the OFFSET position

where the status register map was specified.

・OFFSET is 3rd and 4

(M, N= 0x00, 0x00 to 0x01, 0xFF).

・Output about internal status.
・Output about OFFSET 0x00-0x05 of a status buffer.

・Output about setting information.
・Output about OFFSET 0x06-0x09 of a status buffer.

・Output about Playing time information.
・Output about OFFSET 0x0A-0x0F of a status buffer.

・Output about TAG character code information.
・Output about OFFSET 0x10-0x11 of a status buffer.

・Output about the number under Playing.
・Output about OFFSET 0x12-0x1B of a status buffer.
・An exact value cannot be acquired when music is specified by cursor

and access data, such as a PLAY_CURSOR command.

・Output about the file in a memory, and the number of folders.
・Output about OFFSET 0x1C-0x21 of a status buffer.

・Output the number of files which is in a folder during the present

Playing.

・Output the file name of the file of the +Nth file during the present

Playing.
Specify N from 0x00 to 0x04. N=0x00 is the present file.
Output is enabled only when the Nth file is within the same folder
where the one being played resides. If the Nth file is in a different
folder, “0” is output

・Output data has the preposed data ID (2 bytes). See 6.4.6 for the

output format.

・Output the folder name of the file being played.
・Output data has the preposed data ID (2 bytes). See 6.4.6 for the

output format.

・Outputs the data which is written to TAG of the file being played.
･Specify TAG type with 0xN at the 4

from the following. Any other settings will not accept the command.
N=0x00: TITLE , N=0x01: ARTIST ,
N=0x02: ALBUM , N=0x03: GENRE

・Output data has the preposed data ID (2 bytes). See 6.4.6 for the

output format.

・Outputs the data required to execute resume play.
・The data is output in Little Endian format.
・See 6.4.5 for the output format.

th

byte. It is specified as a byte by Little Endian

th

bytes. Select N at the 4th byte

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・Outputs the free space analysis results of the file analyzed by the

GET_DEV_FREE command.

・Specify the space type to be output with N at the 4

at the 4

READ_DEV_FREE 4 0x6D 0x00 0x07 N 8

considered to specify N=0x01.
N=0x00: Outputs the free space of the selected media by the byte.
N=0x01: Outputs the TOTAL space of the selected media by the byte.

・If the GET_DEV_FREE command has not been sent, this command

outputs “0”.

READ_DEVDESC 4 0x6D 0x00 0x08 0x00 18

READ_CONDESC 4 0x6D 0x00 0x08 0x01 32

READ_INQUIRY 4 0x6D 0x00 0x08 0x02 36

・Output a Device Descripter value when the USB memory is inserted

and chosen.

・Output a Configration Descripter value when the USB memory has

been recognized.

・Output a MSC Inquiry value when the USB memory has been

recognized.

READ_BROWSE_S
TATUS

READ_BROWSE_P
NUM

READ_BORWSE_T
NUM

READ_BROWSE_F
OL_INFO

4 0x6D 0x01 0x00 0x00 1

4 0x6D 0x01 0x00 0x01 4

4 0x6D 0x01 0x00 0x02 7

4 0x6D 0x01 0x01 0x00 76

・Output about the browsing analysis status in a memory.
・Output about OFFSET 0x22- of a status buffer.

・Output about the cursor position number of browsing in a memory.
・Output about OFFSET 0x23-0x26 of a status buffer.

・Output about the number of entries in the folder in which the cursor of

browsing in a memory exists, and the number of classes.

・Output about OFFSET 0x27-0x2D of a status buffer.

・Outputs the information on the folder where the entry being pointed by

the memory browsing cursor resides.

・See 6.4.7 for the output format.

・Outputs the information on the Nth entry ahead from the one being

READ_BROWSE_E
NTRY_INFO

4 0x6D 0x01 0x02 N 76

pointed by the memory browsing cursor.

・Specify N at the 4
・See 6.4.7 for the output format.

・Outputs the TAG analysis results of the file analyzed by the

GET_TAG_CURSOR command.

・Specify the TAG type with N at the 4

READ_BROWSE_T
AG

4 0x6D 0x01 0x03 N 130

Select N at the 4
accept the command.

N=0x00: TITLE, N=0x01: ARTIST,
N=0x02: ALBUM, N=0x03: GENRE

・Output data has the preposed data ID (2 bytes). See 6.4.6 for the

output format.

・Outputs the full path (including drive letter (A:\)) of the entry pointed

READ_BROWSE_P
ATH

4 0x6D 0x01 0x04 0x00 258

by the cursor analyzed by the GET_PATH_CURSOR command.

・The drive letter is "A:\" for USB and "B:\" for SD.
・Output data has the preposed data ID (2 bytes). See 6.4.6 for the

output format.

READ_PLIST_STAT
US

4 0x6D 0x02 0x00 0x00 1

・Output about play list mode status.
・Output about OFFSET 0 x2E-x31 of a status buffer.
・Outputs the TAG analysis results of the file analyzed by the

PLST_GET_TAG_CURSOR command.

・Specify the TAG type with N at the 4

READ_PLIST_TAG 4 0x6D 0x02 0x01 N 130

from the following. Any other settings will not accept the command.

N=0x00: TITLE, N=0x01: ARTIST,
N=0x02: ALBUM, N=0x03: GENRE

・Output data has the preposed data ID (2 bytes). See 6.4.6 for the

output format.

・Outputs the full path (including drive letter (A:\)) of the Nth entry

ahead from the one pointed by the play list browsing cursor.

・The drive letter is "A:\" for USB and "B:\" for SD.

READ_PLIST_PATH 4 0x6D 0x02 0x02 N 258

・Output data has the preposed data ID (2 bytes). See 6.4.6 for the

output format.

・Specify N at the 4

("0x00" indicates the current entry).

・Outputs the name of the Nth file ahead from the entry pointed by the

play list browsing cursor.
READ_PLIST_NAM
E

4 0x6D 0x02 0x03 N 130

・Output data has the preposed data ID (2 bytes). See 6.4.6 for the

output format.

・Specify N at the 4

("0x00" indicates the current entry).

Technical Note

th

th

byte from the following. Any other settings will be

th

byte. Specify N in the range from 0x00 to 0x13.

th

th

byte from the following. Any other settings will not

th

byte. Specify N in the range from 0x00 to 0x13

th

byte. Specify N in the range from 0x00 to 0x13

byte.

th

byte. Select N at the 4th byte

byte. Select N

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READ_PLIST_PLAY
_PATH

READ_PLIST_PLAY
_NAME

READ_PLIST_TNU
M
READ_PLIST_PNU
M

READ_FR_STATUS 4 0x6D 0x03 0x00 0x00 2

READ_FR_SIZE 4 0x6D 0x03 0x01 0x00 4

READ_FR_DATA 4 0x6D 0x03 0x02 0x00 260

READ_IPL_STATUS 4 0x6D 0x05 0x00 0x00 1

READ_ENC_STATU
S

READ_ENC_FILEP
ATH

READ_CD_STATUS 4 0x6D 0x07 0x00 0x00 1

READ_CD_SLBN 4 0x6D 0x07 0x01 0x00 4

READ_CD_PLBN 4 0x6D 0x07 0x01 0x01 4

READ_CD_FINUM 4 0x6D 0x07 0x01 0x02 6

READ_CD_FONUM 4 0x6D 0x07 0x01 0x03 6

READ_CD_FILE 4 0x6D 0x08 N M 64

4 0x6D 0x02 0x04 N 258

4 0x6D 0x02 0x05 N 130

4 0x6D 0x02 0x06 0x00 4

4 0x6D 0x02 0x07 0x00 4

4 0x6D 0x06 0x00 0x00 4

4 0x6D 0x06 0x01 0x00 258

Technical Note

・Outputs the full path (including drive letter (A:\)) of the Nth entry

ahead from the one being played.

・The drive letter is "A:\" for USB and "B:\" for SD.

・Output data has the preposed data ID (2 bytes). See 6.4.6 for the

output format.

・Specify N at the 4

(0x00 indicates the current entry).

・Outputs the name of the Nth file ahead from the entry being played.

・Output data has the preposed data ID (2 bytes). See 6.4.6 for the

output format.

・Specify N at the 4

(0x00 indicates the current entry).

・Outputs the currently set number of files within the play list.

・Outputs the currently set cursor position within the play list.

・Output about a file read and file write functional status.

・Output about OFFSET 0 x2F-0x30 of a status buffer.

・Output the file size of the file specified by the file read function.

・A unit is a byte. It outputs by LittleEndian.

・Reads the data of the file specified by the File Read function.

・Up to 256 bytes of data can be read at one time.

・The leading 4 bytes are file offset. They are output in Little Endian

format.

・Output about IPL Write status.

・Output about OFFSET 0x31-x34 of a status buffer.

・Output about Encode mode status.

・Output about OFFSET 0x32-0x35 of a status buffer.

・Outputs the full path (including driver letter (A:\)) of the file during

encode or previously encoded.

・The drive letter is "A:\" for USB and "B:\" for SD.

・Output about CD-ROM mode status.

・Output about OFFSET 0x36 of a status buffer.

・Output about the LBN number demanded by SEEK request.

・Output by LittleEndian.

・Output about the LBN number of the present input data.

・Output by LittleEndian.

・Outputs the number of files in the file system analysis result.

・Outputs the value in Little Endian format.

・1st-2nd byte : the file information acquirable number of a file system

analysis result (n). The file information to this number can be read at

'READ_CD_FILE'.

・3rd-4th byte : The file number (m) of the head which can carry out

information acquisition is outputted.

・5th-6th byte :The total file number of a file system analysis result is

outputted.When analysis is not completed, the number of files which

analysis has ended is outputted.

・Outputs the number of folders in the file system analysis result.

・Outputs the value in Little Endian format.

・1st-2nd byte : the folder information acquirable number of a file

system analysis result (n). The folder information to this number can be

read at 'READ_CD_FOL’.

・3rd-4th byte : The folder number (n) of the head which can carry out

information acquisition is outputted.

・5th-6th byte :The total folder number of a file system analysis result is

outputted. When analysis is not completed, the number of folders

which analysis has ended is outputted.

・Outputs information of the L[15:0]={M, N}

analysis result.

(For L, Please set up L between file information acquirable numbers

[1st-2nd byte of 'REDA_CD_FINUM'] from 1.)

・The information is output in Little Endian format.

・When file system analysis is not completed, the maximum of specified

L is recorded as information read-out completion.

The acquired information may become invalid when analysis is

resumed.

th

byte. Specify N in the range from 0x00 to 0x04

th

byte. Specify N in the range from 0x00 to 0x04

th

file in the file system

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Technical Note

･Outputs information of the L[15:0]={M, N}

analysis result.

(For L, Please set up L between file information acquirable numbers

[1st-2nd byte of 'REDA_CD_FONUM'] from 1.)

READ_CD_FOL 4 0x6D 0x09 N M 64

READ_SYSMODE 4 0x6D 0x0A 0x00 0x00 1

READ_MEMINFO 4 0x6D 0x0A 0x02 0x00 1

READ_CKSUM 4 0x6D 0x0A 0x03 0x00 5

READ_MOUNT_ER
ROR

READ_FW_VER 4 0x6D 0xFF 0x00 0x00 4

READ_IPL_VER 4 0x6D 0xFF 0x01 0x00 12

4 0x6D 0x0A 0x04 0x00 14

・The information is output in Little Endian format.

・If L=0 is specified, the command outputs the information on CD

volume.

・When file system analysis is not completed, the maximum of specified

L is recorded as information read-out completion.

The acquired information may become invalid when analysis is

resumed.

・Output about the present system operation mode.

・Output about the present memory information.

・Output about OFFSET 0x37 of a status buffer.

・Output the CHECK SUM calculation result when IPL download.

・Output a 1st byte= comparison result. When the 1st byte is 0x0, it

show that comparison result is coincidence. When the 1st byte is 0x1,

it show that comparison result is disagreement.

・Output a 2nd-3th byte are calculation result and 3th-5th byte are the

value currently written in FLASH ROM.

・Output the information on which stage of media mount went wrong

when ERROR generating.

・1st byte:The state whenUSB enumeration is outputted.

・2nd byte:The state when SD initialization is outputted.

・10th byte:The state when file system analysis is outputted.

・Other bytes should be disregarded.

・Please read this value only when ERROR=1.

・Also at the time, although a value is read, it is usually the information

on ERROR=0 for which the value was performed at the end.

・Please refer to process information about the details of a read-out

value at the time of a back clause media mount error.

・Output about a firmware version.

・Output about the image version in Flash.

・1st-2nd byte= model number "W2" =0x57 0x32, 3th-4th= year (lower 2

figures), 5th-8th= manufacture days and months, and

9th-12th="FLAS"=0x46 0x4C0x41 0x53 is outputted.

th

folder in the file system

Table 6.4.2.3 Command enable/disable in each system operation mode

Command Command enable/disable in

each system operation mode

CONFIG PLAYER FILE

RW

PLAYL
IST

Command enable/disable

in each status

IPL
WRITE

CD-DA CD-R

OM

STOP PLAY SEAR

CH
(device

SEAR
CH
(FILE)

Analy
ze

Write ERRO

)

READ_BUFF

READ_STATUS

READ_PSET

READ_PTIME

READ_LANG

READ_PNUM

READ_TNUM

READ_FNUM

READ_PFILE_NA

○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○
○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○
○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○
○ ○ ○ ○ ○ ○ ○ ○ ○ × × × × ×
○ ○ ○ ○ ○ ○ ○ ○ ○ × × × × ×
○ ○ ○ ○ ○ ○ ○ ○ ○ × × × × ×
○ ○ ○ ○ ○ ○ ○ ○ ○ × × × × ×
× ○ × × × × ○ ○ ○ × × × × ×
× ○ × × × × ○ ○ ○ × × × × ×

ME
READ_PFOL_NA

× ○ × × × × ○ ○ ○ × × × × ×

ME
READ_PFILE_TA

× ○ × ○ × × ○ ○ ○ × × × × ×

G
READ_RESUME_

× ○ × ○ × × × ○ ○ × × × × ×

INFO

R

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Technical Note

READ_DEV_FRE
E

READ_DEVDESC

READ_CONDES
C

READ_INQUIRY

READ_BROWSE
_STATUS

READ_BROWSE
_PNUM

READ_BORWSE
_TNUM

READ_BROWSE
_FOL
_INFO

READ_BROWSE
_ENTRY_INFO

READ_BROWSE
_TAG

READ_BROWSE
_PATH

READ_PLIST_ST
ATUS

READ_PLIST_TA
G

READ_PLIST_PA
TH

READ_PLIST_NA
ME

READ_PLIST
_PLAY_PATH

READ_PLIST
_PLAY_NAME

READ_PLIST_TN
UM

READ_PLIST_PN
UM

READ_FR_STAT
US

READ_FR_SIZE

READ_FR_DATA

READ_IPL_STAT
US

READ_ENC_STA
TUS

READ_ENC_FILE
PATH

READ_CD_STAT
US

READ_CD_SLBN

READ_CD_PLBN

READ_CD_FINU
M

READ_CD_FONU
M

READ_CD_FILE

○ ○ ○ ○ ○ ○ ○ ○ × × × × × ×

○ ○ ○ ○ ○ ○ ○ ○ × × × × × ×
○ ○ ○ ○ ○ ○ ○ ○ × × × × × ×

○ ○ ○ ○ ○ ○ ○ ○ × × × × × ×

× ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○

× ○ ○ ○ × × × ○ ○ × × × × ×

× ○ ○ ○ × × × ○ ○ × × × × ×

× ○ ○ ○ × × × ○ ○ × × × × ×

× ○ ○ ○ × × × ○ ○ × × × × ×

× ○ ○ × × × × ○ ○ × × × × ×

× ○ ○ ○ × × × ○ ○ × × × × ×

○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○

× × × ○ × × × ○ ○ × × × × ×

× × × ○ × × × ○ ○ × × × × ×

× × × ○ × × × ○ ○ × × × × ×

× × × ○ × × × ｘ ○ × × × × ×

× × × ○ × × × ｘ ○ × × × × ×

× × × ○ × × × ○ ○ × × × × ×

× × × ○ × × × ○ ○ × × × × ×

○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○

× × ○ × × × × ○ × × × × × ×
× × ○ × × × × ○ × × × × × ×
○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○

○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○

× × × × × ○ × ○ ○ × × × ○ ×

○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○

× × × × × × ○ ○ ○ × × × × ×
× × × × × × ○ ○ ○ × × × × ×
× × × × × × ○ ○ ○ × × × × ×

× × × × × × ○ ○ ○ × × × × ×

× × × × × × ○ ○ ○ × × × × ×

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Technical Note

READ_CD_FOL

READ_SYSMOD
E

READ_MEMINFO

READ_CKSUM

READ_MOUNT_E
RROR

READ_FW_VER

READ_IPL_VER

○=enable×=disable

× × × × × × ○ ○ ○ × × × × ×

○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○

○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○
○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○
○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○

○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○
○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○

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6.4.3 System Operation MODE

The LSI starts operation by setting up System Operation MODE after download of the program by IPL after a power

supply and reset release.

Possible operation changes with each modes of operation.

Only the one mode can set up mode of operation with a command.
The mode which is simultaneously different cannot be set up.
A microcomputer sets up the change in System Operation MODE with a command.
The changes state in System Operation MODE is shown in Fig. 6.4.3.1.

Command CHG_SYSTEM_MODE

N=0x00 ; CONFIG MODE
It is in the state which changes after a power supply and download of the program by IPL.

It is the mode which performs initial setting of a system.

Please change to the mode of other operation after setting up with an initial-setting command.

In this mode, even if it detects insertion of a memory, mount of a memory is not performed.
The mount of a memory carried out behind each mode changes.

N=0x01 ; PLAYER MODE

It is the mode which performs decoding play of the file in a memory.
File browsing (structural analysis in a memory) can be performed.

N=0x02 ; FILE RW MODE

It is the mode which Reading/Writing can perform about the specific file in a memory.
A specific file can be deleted.
File browsing (structural analysis in a memory) can be performed.

N=0x03 ; PLAY LIST MODE
It is the mode which play according to the specific playlist file in a memory.
N=0x04 ; CD-DA Ripping MODE
It is the mode which encodes the input from CD-DA to MP3 (WAV) file, and writes it in a memory.
N=0x05 ; CD-ROM Decode MODE

It is the mode which analyzes and play(decoding) the input from CD-ROM.

N=0x07 ; IPL WRITE MODE

It is the mode which upload to outside serial Flash ROM from the specific data in a memory.
A data file is offered from ROHM.

The reset to the LSI is required for after data rewriting.

Technical Note

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POWER ON

& RESET

IPL

Down Load

Technical Note

TEST2=L ,
TEST3=L

CONFIG

IPL WRITE

PLAYER

FILE RW

PLAYLIST

Fig. 6.4.3.1. The changes state in System Operation MODE

CD-DA

CD-ROM

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6.4.4 Equalizers
You can select audio line output from 5 types of equalizers and 2 types of bus boosts, using commands. (See Table

6.4.1.1.) You can use a combination of an equalizer and bus boost 1.
Even when line output is not selected, the equalizer setting is valid. However, for digital output, the equalizer cannot
change the sound quality.
Figures 6.4.4.1 to 6.4.4.6 show frequency characteristics of each filter.

20

15

10

5

Mag.(dB)

0

Technical Note

POPS

POPS(0x52, 0x01)

POPS+BassBoost1(0x52, 0x09)

-5

-10
10 100 1000 10000 100000

Freq.(Hz)

Figure 6.4.4.1 POPS Frequency Characteristics

JAZZ

20

15

10

5

Mag.(dB)

0

JAZZ(0x52, 0x02)

JAZZ+BassBoost1(0x52, 0x0A)

-5

-10

10 100 1000 10000 100000

Freq.(Hz)

Figure 6.4.4.2 JAZZ Frequency Characteristics

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20

Technical Note

Rock

15

10

5

Mag.(dB)

0

-5

-10
10 100 1000 10000 100000

Freq.(Hz)

ROCK(0x52, 0x03)

ROCK+BassBoost1(0x52, 0x0B)

Figure 6.4.4.3 ROCK Frequency Characteristics

Classic

20

15

10

5

Mag.(dB)

0

-5

-10
10 100 1000 10000 100000

Freq.(Hz)

CLASSIC(0x52, 0x04)

CLASSIC+BassBoost1(0x52, 0x0C)

Figure 6.4.4.4 CLASSIC Frequency Characteristics

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20

Technical Note

R&B

15

10

5

Mag.(dB)

0

-5

-10
10 100 1000 10000 100000

Freq.(Hz)

R&B(0x52, 0x05)

R&B+BassBoost1(0x52, 0x0D)

Figure 6.4.4.5 R&B

BassBoost

20

15

10

5

Mag.(dB)

0

-5

-10
10 100 1000 10000 100000

Freq.(Hz)

BassBoost1(0x52, 0x08)

BassBoost2(0x52, 0x0F)

Figure 6.4.4.6 Bass Boost

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y

y

6.4.5 resume information
This LSI outputs the information for resume function, using READ_RESUME_INFO command.

Technical Note

Table 6.4.5.1 Resume information register structure

Status

OFFSET

0x38-0x61 42

The above resume information has a LSI-unique structure and is used when executing resume play. Therefore, you
should use the data contents as they are without rewriting.
The resume function is implemented by writing the resume information read by READ_RESUME_INFO command to
PLAY_RESUME command. After writing to PLAY_RESUME, the LSI automatically searches the resume file and
plays it.
After reading READ_RESUME_INFO command during file play, the LSI resumes the file from the time
READ_RESUME_INFO has been read.
The data contents read by READ_RESUME_INFO command cannot assure the operations when executing
PLAY_RESUME which has been rewritten due to the positional information within the memory. If the resume
information does not match because of change of memory, the LSI starts playing the first tune.

6.4.6 File Name, Folder Name, TAG Information
A file name, a folder name, and TAG information are outputted to a status register.

The first 2 bytes to be output indicate file data ID information.
The target data is outputted from the 3rd byte.
A file name, a folder name, and TAG information status register structure are shown in Table 6.4.6.1.

The

number of

tes

b

NAME Contents

This data shows the information on the file being played and on the

Resume information

data

Table 6.4.6.1 File (folder, TAG) information register structure

play position.
The data has a LSI-unique structure.
The resume information data is data of 42 bytes.
It outputs with a little endian.

Status

OFFSET

0x38 1 Data type

0x39 1 Encoding

0x3A-0xB9 128

The

number of

b

tes

NAME Contents

File name

(Folder name, TAG)

The type of data is outputted.
0x00; TEXT- NUL (0x00) Terminated character string
0x01; BYTE- Unsigned 1 byte integer

Encoding of a character string is outputted.
0x00 ; ISO8859-1(Latin1)
0x01 : UTF-16(with BOM)
0x02 : UTF-16BE
0x03 : UTF-8
0x49 : UTF-16LE
When a data type is except 0x00:TEXT, data length (byte unit) is
outputted.

A file name (or a folder name, TAG) is outputted by left fitting.
Up to 128 bytes can be output.
If the data is less than 128 bytes, it terminates with 0x00.

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y

The full path within the memory to which a file exists is outputted to a status register.
File path information status register structure is shown in Table 6.4.6.2.

Technical Note

Table 6.4.6.2 File path information register structure

Status

OFFSET

0x38 1 Data type

0x39 1 Encoding

0x3A-0x139 256 File path

The character code information on TAG information is outputted to a status register.
Character code information status register structure is shown in Table 6.4.6.3.

The

number of

tes

b

LANGH

OFFSET=0x11

0x00

0x00

0x00

0x00

0x00

NAME Contents

The type of data is outputted.
0x00; TEXT- NUL (0x00) Terminated character string
0x01; BYTE- Unsigned 1 byte integer

Encoding of a character string is outputted.
0x00 ; ISO8859-1(Latin1)
0x01 : UTF-16(with BOM)
0x02 : UTF-16BE
0x03 : UTF-8
0x49 : UTF-16LE
When a data type is except 0x00:TEXT, data length (byte unit) is
outputted.

A file path is outputted.
The delimiter between folder layers is ”\” (0x5C).
Up to 256 bytes can be output.
If the data is less than 256 bytes, it terminates with 0x00.
For USB, the data starts with ”A:\”; for SD, with ”B:\”.

Table 6.4.6.3 Character code information register structure

LANGL

OFFSET=0x10

0x00

0x01

0x02

0x03

0x49

ID3V1 TAG or ISO8859-1(ID3V2 TAG)

UTF-16 (ID3V2 TAG)

UTF-16BE (ID3V2 TAG

UTF-8 (ID3V2 TAG or AAC TAG iTunes Meta-data)

UTF-16LE (WMA TAG)

Language Code

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6.4.7 File browsing within memory

The LSI can analyzing and reading of the entry information of files and subfolders within a folder which is different
from the one having the current tune while the current tune is being played or stopped. Since the read information
contains access data to be used to select tunes, the LSI enables to directly select and play tunes using this data.
File Browsing within the memory will be enabled by: operating the cursor position which can be controlled separately
from the position of the tune being played and analyzing the folder to read the information on folders.
When sending the command to move the cursor, the LSI can analyze and read the information of 10 entries (files or
folders) from the move destination. (The number of entries can be changed by the setting of SET_BROWSE_NUM.)
The cursor movement conforms to the sort order determined by the sort function. If the sort function is enabled, the
system first reads the files, and then the subfolders, in the sort order. If the sort function is disabled, the LSI reads
the files and subfolders in the order that they are written to FAT.

A file browsing function becomes effective after ANALYSE_ROOT command is send, and starts the analysis in a root
folder.

The file information status register structure which can be read by the file browsing function in a memory is shown in
Table 6.4.7.1.

Technical Note

Table 6.4.7.1 File (folder) information register structure

Status

OFFSET

0x38-0x3D 6 Access data

0x3E 1 Entry type

0x3F 1 - 0x00

0x40-0x43 4 Cluster number

0x44-0x84 64

Cautions)

If browsing operation is frequently performed during music plaing, music skipping may occur by the memory with a
slow access speed.

The

number of

b

tes

NAME Contents

File name

(Folder name)

The position in the memory in which a file and folder information
are written is shown.
Direct song selection is possible from a microcomputer using this
data.

The type of file is outputted.
0x0Y= file-native (LFN, SFN), 0x1Y= folder-native (LFN, SFN)
0x8Y= file-UTF16LE (LFN), 0x9Y= folder-UTF16LE (LFN)
Y become the following cases.
0x1=MP3, 0x2=WMA,
0x3=AAC, 0x4=WAV , 0x5=PLAY LIST,
0x6-0xE=reserve, 0xF,0x0=other file

The cluster number in the memory in which a file and folde
information are written is shown.

A file name (folder name) is outputted by left fitting.

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MICOM

CONFIG MODE

The number of

analyses is set as 10.

Change to PLAYER MODE

Get status

Get file number in folder

Get folder information

Get entry information

Get file information

N=0 to N=9

Get status

Browsing outline flow

This LSI

CHG_SYSTEM_MODE

SET_BROWS_NUM

CHG_SYSTEM_MODE

SEARCH＝0x02

SEARCH＝0x01

SEARCH＝0x00

ANALYZE_ROOT ROOT folder analysis start

ANA_CUR＝H

ANA_CUR＝L

READ_BROWSE_STATUS

READ_BROWSE_TNUM

READ_BROWSE_FOL_INFO

READ_BROWSE_ENTRY_INFO

READ_BROWSE_ENTRY_INFO

READ_BROWSE_STATUS

Memory mount start

Analysis complete

Internal cursor is set to 1st (it sets to file1)

The example of the structure in memory

ROOT Folder（file number=15,subfolder=10)

- file1 - file15 (file)

-folder1 (folder)

- file101 - file120 (file)

-folder2 - folder10 (folder)

Memory Mount complete

Analyze files and folder number
Analyze information from file1 to file10

Output file information
N=0 to N=9

Technical Note

Move cursor N=+10

Get entry information

Get status

Move cursor N=+10

Get entry information

Get status

Move cursor to file2

TAG analysis of file2 GET_TAG_CURSOR

Get TAG ingormation

MOV_NEXT

READ_BROWSE_ENTRY_INFO

READ_BROWSE_STATUS

MOV_NEXT

READ_BROWSE_ENTRY_INFO

READ_BROWSE_STATUS

MOV_DIRECT

READ_BROWSE_ENTRY_INFO

READ_BROWSE_TAG

ANA_CUR＝H

ANA_CUR＝L

ANA_CUR＝H

ANA_CUR＝L

ANA_CUR＝H

ANA_CUR＝L

GET_TAG_END＝H

Internal cursor is set to 11th (it sets to file11)
Analyze information from file11 to file15,

folder1 to folder5

Analysis complete

Internal cursor is set to 21th (it sets to folder6)

Analyze information from folder6 to folder10

Analysis complete

Internal cursor is set to 2nd (it sets to file2)

Analyze information from file2 to file11

Analysis complete

Start TAG analysis

Analysis complete

Figure 6.4.7.1 File browsing outline flow ( analyze root folder )

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MICOM

CONFIG MODE

The number of

analyses is set as 10

Change to

PLAYER MODE

Browsing outline flow

CHG_SYSTEM_MODE

SET_BROWS_NUM

CHG_SYSTEM_MODE

＝SEARCH 0x02

＝SEARCH 0x01

＝SEARCH 0x00

Technical Note

This LSI

The example of the structure in memory

（ ROOT Folder file number=15,subfolder=10)

- file1 - file15 (file)

- folder1 (folder)

- file101 - file120 (file)

-folder2 - folder10 (folder)

Start memory mount

Complete memory mount

Get status

After root folder analysis

The cursor position is to file1

Move cursor N=+15

Move into folder1

Get file number in folder

Get folder information

Get entry information

Get file information

N=0 to N=9

Move cursor N=+10

Get entry information

Get status

READ_BROWSE_STATUS

MOV_NEXT

MOV_DOWN

READ_BROWSE_TNUM

READ_BROWSE_FOL_INFO

READ_BROWSE_ENTRY_INFO

READ_BROWSE_ENTRY_INFO

MOV_NEXT

READ_BROWSE_ENTRY_INFO

READ_BROWSE_STATUS

＝ANA_CUR H

＝ANA_CUR L

＝ANA_CUR H

＝ANA_CUR L

＝ANA_CUR H

＝ANA_CUR L

Analyze information from folder1 to folder10
Internal cursor is set to 16th (it sets to folder1)

Analysis complete

Internal cursor is set to 1st into folder1
(it sets to file101)

Analyze files and folder number
Analyze information from file101 to file110
Analysis complete

Output file information
file101 to file110

Internal cursor is set to 11th(it sets to file111)

Analyze information from file111 to file120
Analysis complete

Move cursor N=-6

Get status

Play file105

Get status

MOV_PREV

READ_BROWSE_STATUS

PLAY_CURSOR

READ_STATUS

＝ANA_CUR H

＝ANA_CUR L

SEARCH=0x01

SEARCH=0x00

PLAY=H

Internal cursor is set to 5th(it sets to file105)

Analyze information from file105 to file114

Analysis complete

Start file105 playing

Figure 6.4.7.2 File browsing outline flow ( analyze folder1 )

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6.4.8 Play list play

The LSI can search the play list in the specified folder within the memory and output the play list information.
When the microcomputer selects the play list, the LSI plays the selected tunes in the order written to the play list.
Also, the LSI can output the file information in the selected play list.
Available playlist file should have an extension of M3U or PLS and be described in full path using ASCII or SHIFT-JIS.
The full path of a file described in the playlist should be within 256 bytes and within 16 hierarchies.
If the play list format is other than the above or the path does not match, the LSI skip playing tunes.
While playing the tunes in the playlist, PLAY, STOP, PAUSE, FF and FB commands can be used to control the list.
The music file described during the play list is treated as what exists in the flat of one class (only root folder) within a
memory irrespective of the place (path) where the file exists really. For this reason, it becomes invalid a folder repeat
and a folder random command, and it becomes effective the repeat in a memory, an one music repeat, and random in
a memory setting up a repeat setup by the SET_REPRAND command.

PLAY LIST MODE

specifies the full path

MICOM

Change to

Get status

of a play list file

Playing start

Play List outline flow

CHG_SYSTEM_MODE

READ_PLIST_STATUS

SET_PLAYLIST

PLAY

PLAY=H

＝PLISTPALY H

＝SEARCH 0x1

＝SEARCH 0x0

PLISTOPEN=H

＝SEARCH 0x1

＝SEARCH 0x0

Technical Note

This LSI

Change to
PLAY LIST MODE

STATUS output

Search Play list file

Play List file OPEN

Analyze 1st to 10th
music into Play List

Play list cursor is set to 1st

Playing start

Get file name

Get folder name

Get TAG info

Get TIME info

Browse file name into play list

Get file name 1st to 10th music

Move Play list cursor to N=+10

Get file name 11st to 20th music

Move Play list cursor to N=-3

Play 8th music

READ_PFILE_NAME

READ_PFOL_NAME

READ_PFILE_TAG

READ_PTIME

READ_PLIST_NAME

PLIST_MOV_NEXT

READ_PLIST_NAME

PLIST_MOV_PREV

READ_PLIST_NAME

PLAY=L

PLAY=H

＝PLIST_BR_BSY H

＝PLIST_BR_BSY L

＝PLIST_BR_BSY H

＝PLIST_BR_BSY L

＝SEARCH 0x1

＝SEARCH 0x0

STATUS output

Play list cursor is set to 11th

Analyze 11st to 20th
music into Play List

Play list cursor is set to 8th

Analyze 8st to 17th
music into Play List

Play 8th music

Figure 6.4.8.1 Play List playing outline flow

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6.4.9 File data write and File data read

It is possible to read the contents of data of the specification file in a memory.
It is possible to create a data file in a memory.
Specification of a file name is specified by the full path (less than 256 bytes) including a file name and an extension.
A full path including a file name and an extension supports to 16 classes within 256 bytes.
A full path is acquirable with browsing operation.
Deletion of a file is possible at the time of browsing operation.

The above-operation can be performed when system operation mode is FILE RW mode.

MICOM

Technical Note

File Write outline flow

This LSI

Change to FILE RW MODE

Setup by SPI BUS

Specifies file and Open file FOPEN_W

Get status

Data writing start

Specifies

the data size of a block

Write data of block by SPI

Specifies

the data size of a block

Write data of block by SPI

CHG_SYSTEM_MODE

SET_FRW_BUS

READ_FW_STATUS

FWRITE_DAT

FWRITE_DAT

FWRREADY=L

FWRREADY=L

＝FIOMODE H

＝FIOSEARCH H

＝FIOSEARCH L

＝FIOOPEN H

＝FWRREADY L

＝FIOSEARCH H

＝FIOSEARCH LFWRREADY=H

＝FIOSEARCH H

＝FIOSEARCH L

＝FIOSEARCH H

＝FIOSEARCH LFWRREADY=H

＝FIOSEARCH H

＝FIOSEARCH L

Change to FILE RW MODE

Start File open

Complete File open

STATUS output

Complete FIFO preparation

Write to memory from FIFO

Complete FIFO preparation

Write to memory from FIFO

FCLOSEFinish File writing

＝FIOSEARCH H

＝FIOSEARCH L

＝FIOOPEN L

Close File

Complete File close

Figure 6.4.9.1 File write function outline flow

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MICOM

Technical Note

File Read outline flow

This LSI

Change to FILE RW MODE

Setup by I2C BUS

Specifies file and Open file

Get status

Get file sze

(Get 1kByte)

Start data reading

Specifies offset in file

(=0)

Read block data (256byte)

Specifies offset in file

(+256)

Read block data (256byte)

Specifies offset in file

(+256)

Read block data (256byte)

Specifies offset in file

(+256)

Read block data (256byte)

CHG_SYSTEM_MODE

SET_FRW_BUS

FOPEN_R

READ_FR_STATUS

READ_FR_SIZE

FREAD_DAT

READ_FR_DATA

FREAD_DAT

READ_FR_DATA

FREAD_DAT

READ_FR_DATA

FREAD_DAT

READ_FR_DATA

＝FRDREADY L

＝FRDREADY L

＝FRDREADY L

＝FRDREADY L

＝FIOMODE H

＝FIOSEARCH H

＝FIOSEARCH L

＝FIOOPEN H

＝FIOSERCH H

＝FIOSERCH H

＝FIOSERCH H

＝FIOSERCH H

Change to FILE RW MODE

Vaild File reading function

Search specified file

Complete file search

STATUS output

Move block data (256byte)

＝FIOSERCH L＝FRDREADY H

to FIFO from memory

＝FIOSERCH L＝FRDREADY H

＝FIOSERCH L＝FRDREADY H

＝FIOSERCH L＝FRDREADY H

Move block data (256byte)
to FIFO from memory

Move block data (256byte)
to FIFO from memory

Move block data (256byte)
to FIFO from memory

FCLOSEFinish File reading

＝FIOSEARCH H

＝FIOSEARCH L

＝FIOOPEN L

Close File

Figure 6.4.9.2 File read function outline flow

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6.4.10 CD data ripping

This function encodes a three-line serial audio input data from a CD to MP3 (or WAV) format and writes it to the
memory.
Specify the file name using the full path (within 256 bytes) including the file name and extension. The file full path
including the file name and extension should be within 256 bytes and available with 16 layers at maximum.
The LSI can also write TAG data of TITLE, ARTIST, ALBUM, and GENRE of up to 64 bytes each to the encoded file.
Set the file name, folder name and TAG data before issuing the command to start encode.

6.4.10.1 Input supporting formats
16-bit EIAJ format or 16-bit I2S format
Sample rate: 32 kHz, 44.1 kHz, 48 kHz
Bit clock: 32 fs, 48 fs, 64 fs LRCK
LRCK input speed: MAX=4 X speed

However, since encoding speed is 2X max, more than in input speed 2X, handling is needed to a buffer FULL
output.The LRCK input speed of the state where an internal buffer is not set to FULL(BULLO=H) is a
correspondence schedule to MAX=2X speed. ( when encoding of MP3 128kbps and use SONY USB
Memory;Pocket Bit series) However, Writing speed differs by memory.

Therefore, 2X speed support can’t guarantee support of operation to all memory.

6.4.10.2 Encode format
MPEG1 Audio Layer3 (extension: MP3) stereo
Bit rate: Selectable from 32 kbps, 64 kbps, 128 kbps, 192 kbps, 256kbps and 320 kbps
Sample rate: Input sample rate

6.4.10.3 Valid data to be encoded

When LRCK is switched from Rch to Lch and all of the following conditions are met, input data is written to the
internal buffer as valid data and encoded to MP3.

[1] The command to enable the encode function turns ON.
[2] BFULLO output terminal is set to L. (The internal buffer is not FULL.)
[3] INREQI input terminal is set to H. (The microcomputer tells that this data is valid.)

When the internal buffer becomes FULL and cannot receive the data, BFULLO terminal output H. Then, data
writing to the internal buffer will stop.

When the internal buffer generates space after processing data and INREQI input terminal is set to L, BFULLO
output terminal is set to L.

Technical Note

Valid data

INREQI

Input data

BFULLO

Internal buffer

Internal encoding flag

Internal bu ffer

FULL

End of encode for bufferStart of encode

6.4.10.4 Data comparison connection function

Using this function, the LSI can hold the last three samples of data written to the internal buffer as valid data,
compares them to those entered after the comparison connection operation starts, includes the samples to the
internal buffer if they match the compared ones, and then restarts encoding. Besides comparison connection,
this function also allows the LSI to connect the data directly by controlling INREQI input and restart encoding.
Immediately after BFULLO becomes H, let the microcomputer set INREQI input terminal to L and read the CD play
time and then stop CD. After BFULLO terminal becomes L, select the comparison connection function or retry from
the beginning to restart playing the CD.
The situation that BFULLO becomes H is generated because the CD play speed is too fast for the internal
encoding operation. To avoid this, slow down the CD play speed.

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To stop encoding once when an error occurs on the CD, immediately let the microcomputer read the CD play time
and set INREQI input terminal to L.

Technical Note

MP3 ENCODE from CD outline flow

MICOM

Change to CD-DA MODE

Setup for encode setting

Specifies file and Open file

Get STATUS READ_CD_STATUS

Control CD track

Start music

Get STATUS

Detect buffer FULL

Control INREQI PIN

CHG_SYSTEM_MODE

＝INREQI L

SET_ENC_MODE SET_ENC_PRM

SET_ENC_TAG

START_ENC

＝INREQI H

READ_CD_STATUS

＝INREQI L

＝ENC H

＝BFULLO H

＝ENCON H

＝BFULLO H

＝ENCFILE H

＝BFULLO L

This LSI

Change to CD-DA MODE

Valid encode function

Setup for encode setting

Start File OPEN

Complete File OPEN

Valid input data and
write data to internal buffer

Start encoding

Internal buffer FULL

Invalid input data and
Stop writting to internal buffer

Encode the part in buffer

Set up connection setup

Control CD track

Re-start music

Get STATUS READ_CD_STATUS

Music end ＝INREQI L

Finish and

File close

SET_COMP_MODE

＝INREQI H

STOP_ENCODE

COMPOPE2=H

＝ENCCLOSE H

＝BFULLO L

＝ENC H

＝ENC L

＝BFULLO H

ENCEND=H

Stop encoding

Valid input data and
start data comparison

Data are in agreement

Restart encoding

Invalid input data and
Stop writting to internal buffer

Stop encoding

Close file

Complete File CLOSE

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6.4.11 CD-ROM Decoder

File system analysis and decoding of data are performed to 3 line serial input data from CD-ROM format.
The result of file system analysis holds the maximum about 350 entry (folders+ files) grade to an internal buffer, when
a file name or a folder name consists of 48 bytes as a standard. When 32 bytes or less are constituted, an analysis
result holds the maximum about 450 entry grade to an internal buffer. An analysis result is outputted to status.
The entry which was not able to be held to the buffer domain for analysis cannot be played after file system analysis.
Moreover, since analysis is performed from the class of a higher rank, when the buffer domain for analysis is set to
FULL before the analysis of a playable file by the reasons of a higher rank class having many folders, it may be unable
to play depending on the structure in CD-ROM. The number of entries which can be held to the buffer for analysis
changes depending on the contents of composition of each CD-ROM.
The input data buffer of about 100 kB is built in. (A file system analysis result is also included.)
CD-ROM ECC and the EDC function are supported.
Refer to the CD data ripping for CD input data format and input terminal specification.

6.4.11.1 Support File System

CD-ROM Mode1, Mode2 form1, and Mode2 form2 are supported.
The file system supports ISO9660 level 1 and 2.
Remeo and Joliet extension are supported.
The folder class which can be searched support by 8 classes.
A folder name and a file name are acquirable to 48 bytes.

6.4.11.2 SEEK request
The status of the LBN of required data is outputted when a file analysis start and file selection.

Furthermore, SEEK request interruption is outputted from an IRPTO terminal to a microcomputer at this time.
When a SEEK request occurs, a microcomputer should perform playing from at least 1 sector before from
requested LBN.
If a request sector is inputted, it will be automatic, connection operation will be performed and subsequent data will
be processed.

6.4.11.3 File, Folder, CD Volume Information
The status of the CD file system analysis result is outputted by READ_CD_FOL and a READ_CD_FILE

command.

If the 0th is specified by the READ_CD_FOL command, the volume information on CD will be outputted.

A file, a folder, and volume information status register structure are shown below.

Technical Note

Table 6.4.11.3.1 CD file information register structure

Status

OFFSET

0x38-0x39 2 Parent folder number

0x3A-0x3B 2 File number A file number is outputted.

0x3C-0x3F 4 File size File size is outputted.

0x40-0x43 4 File LBN LBN of the file head is outputted.

0x44 1 Extension type

0x45 1 Identifier length The identifier length (byte) recorded on DISC is outputted.

0x46 1 - 0x01

0x47 1 Data length Data length is outputted.

0x48-0x77 48 File name

The

number of

tes

b

NAME Contents

A parent folder number is outputted.
A route becomes No. 1.

An extension (file kind) is outputted.
0x01 : MP 3
0x02 : WMA
0x03 : AAC
0x04 : WAV
0x05 : Play list file
0x06-0x0E : Reserved
0x00 and 0x0F : Other files

A file name is outputted by left fitted.
Up to 48 bytes can be output.
A data type is outputted as BYTE.

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Technical Note

Table 6.4.11.3.2 CD folder information register structure

Status

OFFSET

0x38-0x39 2

0x3A-0x3B 2

0x3C-0x3D 2 Parent folder number

0x3E-0x3F 2 Folder number The present folder number is outputted.

0x40-0x43 4 Folder LBN LBN of the folder head is outputted.

0x44 1 - reserve

0x45 1 Identifier length The identifier length (byte) recorded on DISC is outputted.

0x46 1 - 0x01

0x47 1 Data length Data length is outputted.

0x48-0x77 48 Folder name

The

number of

tes

b

NAME Contents

The number of

subfolders

The number of

playable files

The number of subfolders is outputted.

The number of playable files is outputted.

A parent folder number is outputted.
A route becomes No. 1.

A folder name is outputted by left stuffing.
Up to 48 bytes can be output.
A data type is outputted as BYTE.

Table 6.4.11.3.3 CD volume information register structure

Status

OFFSET

0x38?0x39 2

0x3A-0x3B 2

0x3C-0x3F 4 Path table LBN

0x40-0x43 4 Root folder LBN LBN of the root folder head is outputted.

0x44 1 VD type

0x45 1 Identifier length The identifier length (byte) recorded on DISC is outputted.

0x46 1 - 0x01

0x47 1 Data length Data length is outputted.

0x48-0x67 32 Volume name

The

number of

tes

b

NAME Contents

The number of total

folders

The number of total

playable files

The number of total folders is outputted.

The number of total playable files is outputted.

LBN of the path table (L type) currently recorded on effective VD is
outputted

VD type is outputted.

0x00 : PVD
0x01 : SVD

A volume name is outputted by left stuffing.
Up to 32bytes can be output.
A data type is outputted as BYTE.

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Technical Note

CD-ROM Decoder outline flow

MICOM

Change to CD-ROM MODE

Setup for enabling
CD-ROM function

Get status READ_CD_STATUS

Start FS analysis

Read data LBN

Control CD track

Get status

CHG_SYSTEM_MODE

＝INREQI L

START_CDROM

START_CDANA

READ_CD_SLBN

＝INREQI H

READ_CD_STATUS

＝BFULLO H

＝CDROMON H

＝BFULLO L

＝SEEK H＝IRPTO H

＝CDROMANABUSY H

This LSI

Change to CD-ROM MODE

Valid CD-ROM function

Request data LBN

Valid input data
data LBN are in agreement
write data to internal buffer

Start analysis

Detect analysis finish

Detect buffer FULL

Control INREQI PIN

Get analysis result READ_CD_FILE

Specifies file and play file

Specifies start LBN

Read data LBN

Control CD track

Get status

Get status

＝INREQI L

CD_SET_LBN

READ_CD_SLBN

＝INREQI H

READ_CD_STATUS

＝CDROMANAEND H

＝BFULLO H

＝BFULLO L

＝SEEK H＝IRPTO H

＝PLAY H

＝STOP H

Complete analysis

Invalid input data and
Stop writting to internal buffer

Request data LBN

Valid input data
data LBN are in agreement
write data to internal buffer

Start decoding

Finish decoding

Figure 6.4.11.1 File read function outline flow

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6.4.12 Interruption IRPTO Terminal to Microcomputer

An IRPTO terminal generates an interrupt request to a microcomputer.
Interruption becomes active by H.
The contents of interruption change with the states where it is operating mode. The contents are shown below.
We encourage detecting a standup in the interruption port of a microcomputer.

PLAYER MODE ERROR

FILE RW MODE

File read

State Interruption Contents

An interrupt occurs when memory connection error or
communication error.

Clear conditions; interruption is cleared by extraction and
insertion of a memory.

An interrupt occurs when a specification file is searched and

FRDREADY

read-out is ready.

Clear conditions; interruption is cleared by data are read (block
unit).

Technical Note

FILE RW MODE

File write

PLAY LIST MODE ERROR

CD-DA MODE ENCEND

CD-ROM MODE SEEK

IPL WRITE MODE IPLMODEEND

6.4.13 Previous Command Processing Situation

The previous command processing situation is outputted as status register STATUS6 (OFFSET=0x05)
PRECOMSTAT.
Bit0 of STATUS6(OFFSET=0x05) and Bit2 of STATUS2 (OFFSET=0x01) is the same value. When Bit2 of STATUS2
set to "0", the previous command is normally processed. When Bit2 of STATUS2 set to "1", the previous command is
not processed.
The following shows the value descriptions.

Value NAME Cause of being unprocessed
0x01 UNCLASSIFIED Non classification error
0x03 UNKNOWN CMD Undefined command
0x05 SEARCH Searching now
0x07 INVALID ARG Invalid parameter is detected.
0x09 WRONG MODE Invalid command in the current system operation mode

0x0B NOT READY Initialization is not completed.
0x0F NOT IMPLEMENTED The function is not mounted.
0x11 WRITE PROTECTED The device is write-protected.
0x13 DISK FULL The memory has no free space.
0x15 DEVICE ERROR Device error

FWRREADY

An interrupt occurs when read-in is ready with memory.

Clear conditions; interruption is cleared by data are write (block
unit).

An interrupt occurs when memory connection error or
communication error.

Clear conditions; interruption is cleared by extraction and
insertion of a memory.

An interrupt occurs when encoding is completed and a file is
CLOSE(ed).

Clear conditions; interruption is cleared by file OPEN is carried
out.

An interrupt occurs when requiring necessary data (LBN).

Clear conditions; interruption is cleared by required data are
inputted.

An interrupt occurs when FLASH ROM rewriting end.

Clear conditions; interruption is cleared by reset.

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6.4.14 Selected memory information

The kind and information on a device which are selected now are outputted by the READ_MEMINFO command.
The details of an output value are shown below.

Value[7:4] Contents
0x0 Mounted USB device (playable device)

0x1 NO-Mounted USB device (file system un-support, etc)
0x2 USB LOW SPEED device
0x3 USB device with two or more DEVICE CONFIGRATION
0x4 USB device which cannot be recognized
0x5 -
0x6 -
0x7 SD Card
0x8-0xF It means that there is HUB, when Bit7 is H.

6.4.15 Process information when a media mount error

The information on in which stage of media mount it failed with the READ_MOUNT_ERROR command is outputted.
After being set to ERROR=1, by reading this command shows in detail whether the error has occurred during which
process execution.
For example, when ERROR=1 and 1st byte=0x08 or 0x09 of READ_MOUNT_ERROR command, since a response
mistake is made from the device in the process of TEST UNIT READY or REQUEST SENSE, it becomes a mount
error.
The details of an output value are shown below.

1st byte (offset=0) of a read value outputs the process state at the time of USB mount.

Read value Process state Read value Process state

0x00 Before a start of operation 0x10 GET_DEVSTATUS

0x01 Device descriptor 0x11 Sector read command send

0x02 SET_ADDRESS 0x12 Sector read command recive

0x03 Configuration descriptor 0x13 Sector read status recive

0x04 End Point connect 0x14 Sector write command send

0x05 SET_Configuration 0x15 Sector write command recive

0x06 GET MAX LUN 0x16 Sector write status recive

0x07 CLEAR_FEATURE 0x17 Not-supported Device Subclass

0x08 INQUARY 0x18 HUB only

0x09 TEST UNIT READY 0x19 LOW DEVICE detect

0x0A REQUEST SENSE - -

0x0B READ_CAPACITY - -

0x0C CLEAR_PORT_FEATURE - -

0x0D GET_PORT_STATUS - -

0x0E SET_PORT_FEATURE - -

0x0F HUB descriptor - -

Technical Note

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2nd byte (offset=1) of a read-out value outputs the process state at the time of SD initialization.

Read value Process state

0x00 Before a start of operation

0x01 CMD0 Response

0x02 CMD8 Response

0x04 CMD55 Response

0x08 CMD41 Response

0x10 CMD58 Response

0x20 CMD1 Response

10th byte (offset=9) of a read-out value outputs the process state at the time of FAT filesystem analysis.

Read value Process state

0x00 Before a start of operation

0x01 MBR read

0x02 MBR Analysis

0x03 BPB Analysis

0x04 FAT table check

6.5 Watch Dog Timer
The LSI incorporates Watch Dog Timer, which monitors the system hang-up and resets whenever it occurs.

After resetting hang-up, WDT (Watch Dog Timer) becomes available in either MODE1 or MODE2. In MODE1, WDT
keeps valid all the time. In MODE2, you can disable WDT using DIS_WDT command. Once WDT is disabled, it
cannot be enabled until reset is input.
When WDT, in the valid status, detects a hang-up within the LSI regardless of external situations (on the
microcomputer), the LSI resets the system internally.

To monitor whether the LSI is reset by WDT from the master microcomputer (external), use SET_WDT command to
write H to STATUS WDT_RFLG and monitor this status. After reset, this status is read as L. This helps you judge
that WDT has reset the LSI by reading out L when reading the status regularly after writing H using SET_WDT
command.

Technical Note

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6.6 IPL support to external serial FLASH ROM
Once reset, the LSI needs to download the program to a part of the internal program area from the external serial
FLASH ROM.
However, it is also possible to write in data from a microcomputer without connecting external serial FLASH ROM.
The download function from the external serial FLASH ROM enables to add and change the system functions simply
by rewriting the external serial FLASH ROM.
The program is downloaded automatically after reset. After download is completed, it shifts to CONFIG mode.

MICOM

RESETX

release

Language setup

MP3 setup

etc

RESETX=H

SET_LANG

SET_MP3

Initialization outline flow

＝BUSY H

＝SEARCH L

＝BUSY L

＝INIT_END H

This LSI

IPL download start＝SEARCH H

IPL download complete

Shift to CONFIG MODE

The state which can be
command operated

Technical Note

System Operation MODE

This LSI supports to serial FLASH ROM to 8 bit-Command, 24 bit-ADDRESS, and clock MIN=15MHz by minimum
size 2Mbit. This LSI supports to serial FLASH ROM to Write Status Register cycle time MAX.= 500msec, Page

Program cycle time MAX.= 500msec, and Chip Erase cycle time MAX.= 180sec.
The download time of the program from serial FLASH ROM is about 0.6 secs. This time changes with contents of the
program writed in serial FLASH ROM.

The LSI supports a mode which enables to write the program data written to the memory (USB or SD) to the external
serial FLASH ROM. By executing the command to enable the FLASH ROM write mode, the LSI searches in the
memory and rewrites the external serial FLASH ROM. After rewriting the FLASH ROM, you should reset the LSI.

Change

PLAYER

Play setting

etc

Play command

playing time, etc.

Status get

CHG_SYSTEM_MODE

READ_STATUS status get

SET_VOL, etc

READ_STATUS status get

PLAY

READ_STATUS status get

PLAY=H

Shift to PLAYER MODE

Memory mount

＝SEARCH H

Memory mount

＝SEARCH L

complete

1st music search start,

＝SEARCH H

TAG analysis start

1st music search complete,

＝SEARCH L

TAG analysis complete

1st music playing start

The state which can be
command operated

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●Notes for use

1) Power on Reset
Please keep the terminal RESETX at the Low level when the power supply starts. After completely starting up 3.3V system power supply , afterwards,
please make the terminal RESETX High level after 100us after the oscillation of the system clock is steady. Moreover, please make the terminal
RESETX Low level during 100us or more when resetting it while operating..

2) About compatibility in USB memory device and SD memory card
According to the file structure and communication speed of an USB memory, SD memory card, this LSI might not play back correctly.

3) About turning on the power supply
Current rush might flow momentarily by the order of turning on the power supply and the delay in IC with two or more power supplies, and note the
capacity of the power supply coupling, the power supply, and width and drawing the GND pattern wiring.

4) About absolute maximum rating
When the absolute maximum rating such as the applied voltage and the ranges of the operating temperature
is exceeded, LSI might be destroyed. Please apply neither voltage nor the temperature that exceeds the
absolute maximum rating. Please execute physical measures for safety such as fuse when it is thought to
exceed the absolute maximum rating, and examine it so that the condition to exceed the absolute maximum
rating is not applied to LSI.

5) About GND Voltage
In any state of operation must be the lowest voltage about the voltage of the terminal GND. Please actually confirm the voltage of each terminal is not
a voltage that is lower than the terminal GND including excessive phenomenon.

6) About design of overheating malfunction preventive circuit
Please design overheating malfunction preventive circuit with an enough margin in consideration of a permissible loss in the state of using actually.

7) About the short between terminals and the mounting by mistake
Please note the direction and the gap of position of LSI enough about LSI when you mount on the substrate. LSI might be destroyed when mounting
by mistake and energizing. Moreover, LSI might be destroyed when short-circuited by entering of the foreign substances between the terminal and
GND, between terminals, between the terminal and the power supply of LSI.

8) About operation in strong electromagnetic field
Use in strong electromagnetic field has the possibility of malfunctioning and evaluate it enough, please.

9) About 2X speed recording

Recording to a memory with slow access speed may require data connection operation.

10) Power off or memory disconnection under memory writing

11) Browsing operation

12) CD-ROM playing

13) Playing time of MP3 file

14) Write-in operation exceeding memory size

15) Write-in operation of the file size exceeding FAT specification

16) About WMA

17) About I

2X speed recording to all the memories cannot be guaranteed.

The sudden power off or memory disconnection during recording or file write operation to a memory may break the data in a memory.

With a memory with slow access speed, Browsing operation during music playing may generate skipping.

CD-ROM playing operation is premised on data being inputted so that an internal data buffer may not become empty.
When an input does not meet the deadline and internal data buffers become empty, skipping occurs.

The playing time of an MP3 file may shift when fast forward playing, rewinding playing, and VBR playing.

When memory size is exceeded, IC will stop writing to a file and will be in an error condition.

When file size is exceeded, IC will stop writing to a file and will be in an error condition.

Windows Media Audio is the music compression technology which Microsoft Corp. developed.
Windows Media is the registered trademark of U.S. Microsoft Corporation in the U.S., and other countries.

2

C format I/F
Although this LSI has adopted the I
For this reason, level shifter is needed for connection with the device besides the range of operating power supply voltage of this LSI.

2

C format, the level shifter circuit is not built in.

Technical Note

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2012.04 - Rev.

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Technical Note

●Ordering part number

B U 9 4 7 0 2 A K V - E 2

Part No.

Part No.

●Physical Dimension Tape and Reel Information

VQFP80

60

14.0± 0.2

12.0± 0.1

41

4061

12.0± 0.1

14.0± 0.2

1.6MAX

1.4± 0.05

VQFP80

1.25

80

0.1±0.05

1

0.5± 0.1

60

1PIN MARK

14.0± 0.2

12.0± 0.1

1.25

21

20

0.145

+6

4

4

-

0.08 S

+0.05

0.2

-

0.04

M

0.08

+0.05

-

0.03

0.5± 0.15

1.0± 0.2

S

(Unit : mm)

41

4061

14.0± 0.2

1.6MAX

12.0± 0.1

1.4± 0.05

1.25

80

0.1±0.05

1

0.5± 0.1

1PIN MARK

+0.05

0.2

-

0.04

1.25

21

20

0.145

+6

4

4

-

0.08 S

M

0.08

+0.05

-

0.03

0.5± 0.15

1.0± 0.2

S

(Unit : mm)

●External dimension

14.0±0.2

12.0±0.1

4160

61

12.0±0.1

14.0±0.2

80

BU94702
AKV

Lot No.

40

1.25

21

1.6MAX

1.4±0.05

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1

1.25

0.1±0.05

1 PIN mark

20

0.08

0.08

M

+0.05

-0.04

0.20.5±0.1

+0.05

0.145

-0.03

+6゜

4゜

-4゜

S

<Tape and Reel information>

Embossed carrier tape (with dry pack)Tape

Quantity

Direction
of feed

1000pcs
E2

The direction is the 1pin of product is at the upper left when you hold

()

reel on the left hand and you pull out the tape on the right hand

1pin

Reel

<Tape and Reel information>

Tray (with dry pack)Container
Quantity
Direction of feed

1pin

0.5±0.15

S

1.0±0.2

1000pcs

Direction of product is fixed in a tray

Package
KV:
VQFP80

Packaging and forming
specification
E2: Embossed tape and
reel

None: Tray, Tube

Direction of feed

Order quantity needs to be multiple of the minimum quantity.

∗

Order quantity needs to be multiple of the minimum quantity.

∗

2012.04 - Rev.

BU94702AKV

A

●Revision history

Date Revision Changes

01.Apr.2012 A New Release

Technical Note

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© 2012 ROHM Co., Ltd. All rights reserved.

2012.04 - Rev.

Notes

No copying or reproduction of this document, in part or in whole, is permitted without the
consent of ROHM Co.,Ltd.

The content specied herein is subject to change for improvement without notice.

The content specied herein is for the purpose of introducing ROHM's products (hereinafter
"Products"). If you wish to use any such Product, please be sure to refer to the specications,
which can be obtained from ROHM upon request.

Examples of application circuits, circuit constants and any other information contained herein
illustrate the standard usage and operations of the Products. The peripheral conditions must
be taken into account when designing circuits for mass production.

Great care was taken in ensuring the accuracy of the information specied in this document.
However, should you incur any damage arising from any inaccuracy or misprint of such
information, ROHM shall bear no responsibility for such damage.

The technical information specied herein is intended only to show the typical functions of and
examples of application circuits for the Products. ROHM does not grant you, explicitly or
implicitly, any license to use or exercise intellectual property or other rights held by ROHM and
other parties. ROHM shall bear no responsibility whatsoever for any dispute arising from the
use of such technical information.

The Products specied in this document are intended to be used with general-use electronic
equipment or devices (such as audio visual equipment, of ce-automation equipment, commu­nication devices, electronic appliances and amusement devices).

The Products specied in this document are not designed to be radiation tolerant.

While ROHM always makes effor ts to enhance the quality and reliability of its Products, a
Product may fail or malfunction for a variety of reasons.

Please be sure to implement in your equipment using the Products safety measures to guard
against the possibility of physical injury, re or any other damage caused in the event of the
failure of any Product, such as derating, redundancy, re control and fail-safe designs. ROHM
shall bear no responsibility whatsoever for your use of any Product outside of the prescribed
scope or not in accordance with the instruction manual.

The Products are not designed or manufactured to be used with any equipment, device or
system which requires an extremely high level of reliability the failure or malfunction of which
may result in a direct threat to human life or create a risk of human injury (such as a medical
instrument, transportation equipment, aerospace machinery, nuclear-reactor controller, fuel­controller or other safety device). ROHM shall bear no responsibility in any way for use of any
of the Products for the above special purposes. If a Product is intended to be used for any
such special purpose, please contact a ROHM sales representative before purchasing.

If you intend to export or ship overseas any Product or technology specied herein that may
be controlled under the Foreign Exchange and the Foreign Trade Law, you will be required to
obtain a license or permit under the Law.

Notice

Thank you for your accessing to ROHM product informations.
More detail product informations and catalogs are available, please contact us.

ROHM Customer Support System

www.rohm.com
© 2012 ROHM Co., Ltd. All rights reserved.

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R1120

A

Notes

No copying or reproduction of this document, in part or in whole, is permitted without the
consent of ROHM Co.,Ltd.

The content specied herein is subject to change for improvement without notice.

The content specied herein is for the purpose of introducing ROHM's products (hereinafter
"Products"). If you wish to use any such Product, please be sure to refer to the specications,
which can be obtained from ROHM upon request.

Examples of application circuits, circuit constants and any other information contained herein
illustrate the standard usage and operations of the Products. The peripheral conditions must
be taken into account when designing circuits for mass production.

Great care was taken in ensuring the accuracy of the information specied in this document.
However, should you incur any damage arising from any inaccuracy or misprint of such
information, ROHM shall bear no responsibility for such damage.

The technical information specied herein is intended only to show the typical functions of and
examples of application circuits for the Products. ROHM does not grant you, explicitly or
implicitly, any license to use or exercise intellectual property or other rights held by ROHM and
other parties. ROHM shall bear no responsibility whatsoever for any dispute arising from the
use of such technical information.

The Products specied in this document are intended to be used with general-use electronic
equipment or devices (such as audio visual equipment, of ce-automation equipment, commu­nication devices, electronic appliances and amusement devices).

The Products specied in this document are not designed to be radiation tolerant.

While ROHM always makes effor ts to enhance the quality and reliability of its Products, a
Product may fail or malfunction for a variety of reasons.

Please be sure to implement in your equipment using the Products safety measures to guard
against the possibility of physical injury, re or any other damage caused in the event of the
failure of any Product, such as derating, redundancy, re control and fail-safe designs. ROHM
shall bear no responsibility whatsoever for your use of any Product outside of the prescribed
scope or not in accordance with the instruction manual.

The Products are not designed or manufactured to be used with any equipment, device or
system which requires an extremely high level of reliability the failure or malfunction of which
may result in a direct threat to human life or create a risk of human injury (such as a medical
instrument, transportation equipment, aerospace machinery, nuclear-reactor controller, fuel­controller or other safety device). ROHM shall bear no responsibility in any way for use of any
of the Products for the above special purposes. If a Product is intended to be used for any
such special purpose, please contact a ROHM sales representative before purchasing.

If you intend to export or ship overseas any Product or technology specied herein that may
be controlled under the Foreign Exchange and the Foreign Trade Law, you will be required to
obtain a license or permit under the Law.

Notice

Thank you for your accessing to ROHM product informations.
More detail product informations and catalogs are available, please contact us.

ROHM Customer Support System

www.rohm.com
© 2012 ROHM Co., Ltd. All rights reserved.

http://www.rohm.com/contact/

R1120

A