Samsung S1A0501X01-S0B0 Datasheet

DIGITAL CONTROLLED AUDIO PROCESSOR S1A0501X01

GENERAL DESCRIPTION

The S1A0501X01 is an audio processor for volume/tone/fader
control, which is suitable for car radios or Hi-Fi system. It has a
built-in trimmer for user to set a source level. R/L rear output is
changable to input in the case of a home audio system for user
conveniency, an external equalizer or a noise reduction circuit
is selectable.
When the S1A0501X01 is used with some sound-effect equip­ment such as graphic equalizer, the internal tone control block
of S1A0501X01 can be bypassed for decreasing redundancy.
All selections and function controls are designed to be con-

trolled by an I2C-bus protocol or a general microprocessor
interface protocol.

32−SOP−450B

#1

FEATURES

• 3-Input multiplexing

• Source Level trimmer (selectable input level)

• Volume control in 0.6dB step

• Tone control (internal bass/treble function block with external components)

• Source out / volume in (enable ext.graphic eq./ noise reduction equipment)

• Loudness / mute

• Fader control ( separated for balance )

• All functions are programmable / controllable via serial I2C bus
or general Micom interface protocol.

ORDERING INFORMATION

Device Package Operating Temperature

S1A0501X01-S0B0 32−SOP−450B −25°C - +75°C

1

S1A0501X01 DIGITAL CONTROLLED AUDIO PROCESSOR

BLOCK DIAGRAM

RIGHT
INPUT

1 - 3

LEFT

INPUT

1 - 3

1

2

2

3

2

1

2.2uF
each

1.0uF

2.2uF
each

0.47uF

VCC

11

10

9

VOLTAGE

2

REFERENCE

13

14

15

28 3 19 18 12 21 20 4 16

DGND

0.1uF

2.2uF

AGND

2.2uF

VOLUME

VOLUME

0.1uF

0.47uF 0.0027uF

0.1uF

5.6K

0.1uF

BASS

Each

to

block

BASS

0.1uF

5.6k

TREBLE

0.0027uF

TREBLE

SERIAL I2C BUS INTERFACE

10uF

1752223867291

FADER

FADER

10uF

26

24

32
31
30

25

27

RFO

4.7uF

RRO

4.7uF

STB
SCL
SDA

LRO

4.7uF

LFO

4.7uF

PIN CONFIGURATION

2

32
STB1

VCC

31
SCL

CREF
2

30
SDA

AGND
3

29

DREF

LTC
4

27
LFO

26

RFO

28

DGND

S1A0501X01

RTC

RVOLIN
6

RSRCOUT
7

5

25

24

LRO

RRO

RVOLC

RIN3

8

9

23

RBC1

RIN2
10

22

RBC2

RIN1
11

21

20

LBC1

LBC2

LVOLC

LIN3

12

13

19

18

LVOLIN

LSRCOUT

LIN2

LIN1

14

15

OCC2

OCC1
16 17

DIGITAL CONTROLLED AUDIO PROCESSOR S1A0501X01

PIN DESCRIPTION

Pin Symbols Description

1 VCC Power Supply
2 CREF Reference Voltage Ripple Rejection Capacitor Tab
3 AGND Analog Ground (0V)
4 LTC Left Treble Capacitor Tab
5 RTC Right Treble Capacitor Tab
6 RVOLIN Right Volume In / External Equalizer For Right Channel
7 RSRCOUT Right Source Out / External Equalizer For Right Channel
8 RVOLC Right Volume Loudness Capacitor Tab

9 RIN3 Right Audio Input3
10 RIN2 Right Audio Input2
11 RIN1 Right Audio Input1
12 LVOLC Left Volume Loudness Capacitor Tab
13 LIN3 Left Audio Input3
14 LIN2 Left Audio Input2
15 LIN1 Left Audio Input1
16 OCC1 Offset Cancelling Capacitor Tab1
17 OCC2 Offset Cancelling Capacitor Tab2
18 LVOLIN Left Volume In / External Equalizer For Left Channel
19 LSRCOUT Left Source Out / External Equalizer For Left Channel
20 LBC2 Left Bass Capacitor Tab2
21 LBC1 Left Bass Capacitor Tab1
22 RBC2 Right Bass Capacitor Tab2
23 RBC1 Right Bass Capacitor Tab1
24 RRO Right Rear Audio Output
25 LRO Left Rear Audio Output
26 RFO Right Front Audio Output
27 LFO Left Front Audio Output
28 DGND Digital Ground (0V)
29 DREF Internally-generated Digital Power Stabilization Capacitor Tab
30 SDA Data Signal Input Of I2C Bus
31 SCL Clock Signal Input Of I2C Bus
32 STB Strobe Signal Input

3

S1A0501X01 DIGITAL CONTROLLED AUDIO PROCESSOR

ABSOLUTE MAXIMUM RATINGS

Parameters Symbols Value Unit

Supply Voltage VCCmax 15.0 V
Max.Power Dissipation Pdmax 1000 mW
Max.Operating Temperature Topr -25 to +75
Max.Storage Temperature Tstg - 40 to +125

ELECTRICAL CHARACTERISTICS

Electrical Characteristics (Vi = 1Vrms/1kHz, Ta=25°C, VCC=13.2V TYP)

Parameters Test Conditions

Operating Voltage - 6.0 - 15.0 V
Supply Current Vi=0 6.0 10.0 14.0 mA
Input Dynamic VCC=13.2V, Output T.H.D.=0.1% 6.0 - - Vp-p
Input Crosstalk Vi=1Vrms,1kHz, 20Hz-20kHz BPF - - -89.0 dB
Trimming Range - -5.4 -6.0 - dB
Channel Crosstalk Vi=1Vrms,1kHz, 20Hz-20kHz BPF - - -89.0 dB
Channel Balance Vi=1Vrms,1kHz -2.0 - 2.0 dB
Voltage Gain Vi=1Vrms,1kHz, Volume=Max -2.0 0.0 2.0 dB
S/N Ratio Vi=1Vrms,1kHz, 20Hz-20kHz BPF - 92 dB
T.H.D. Vi=1Vrms,1kHz, Volume=Max - 0.005 0.01 %
Loudness Boost Vi=1Vrms,100Hz 0.2 - 10.5 dB
Max.Volume attenuation Vi=1Vrms,1kHz, Volume=Min -76.2 -74.2 dB
Bass Control Range Vi=1Vrms,100Hz, Bass= Min/Max -14 - 14 dB
Treble Control Range Vi=1Vrms,10kHz, Treble= Min/Max -12 - 12 dB
Front/Rear Balance Vi=1Vrms,1kHz, Fader= Middle - - 1.0 dB
Front/Rear Control Range Vi=1Vrms,1kHz, Fader= Min - - -38.75 dB
Frequency Response -3dB 20 - 20000 Hz
Mute Attenuation Vi=1Vrms,1kHz, 20Hz-20kHz BPF -100 - -90 dB

Specifications

Min Typ Max

Unit

4

DIGITAL CONTROLLED AUDIO PROCESSOR S1A0501X01

SERIAL BUS INTERFACE PROTOCOL - THE I2C BUS

Timing Diagram of I2C Bus Protocol

SCL

SDA

STB

start

1

2

3

25 26 27

stop

I2C Bus Byte Format of S1A0501X01

Start 1 - 8 9 10 - 17 18 19 - 26 27 Stop

S Slave Address ACK Sub Address ACK DATA ACK P

S = A start Condition
Slave Address = Chip Address ( 10000000B )
ACK = Acknowledge ( from Slave )
Sub Address = Transferred Data1 ( assigning Function )
DATA = Transferred Data2 ( assigning Operation )
P = A Stop Condition

STB Signal 'LOW '= Always 'LOW' when I2C Bus protocol (tied to 'GND').

♣ Max.SCL Frequency 200kHz

5

S1A0501X01 DIGITAL CONTROLLED AUDIO PROCESSOR

Acknowledge on the I2C Bus Interface Protocol

start

SCL

SDA

1 2 3

MSB

Software Specification of S1A0501X01

<< Byte Organization - I2C Bus Transmission >>

FUNCTIONS

SUB DATA BYTE

Address MSB B6 B5 B4 B3 B2 B1 LSB

Select

Input

Control

Trimmer Set STS1 STS0 X X X

0 0 0 X X X X X

Loudness SLD X X X

Volume

Control

Tone

Control

Fine

Coarse SVC2 SVC1 SVC0 X

Bass

Treble ST3 ST2 ST1 ST0 OOST / CUT

0 0 1 X X X X X

0 1 0 X X X X X

Left Front 0 1 1 X X X X X

Fader

Control

Left Rear 1 0 0 X X X X X

Right Front 1 0 1 X X X X X SF4 SF3 SF2 SF1 SF0 X X X

Right Rear 1 1 0 X X X X X

Rearin Con

Misc.

Control

MUTE

1 1 1 X X X X X

EXT.EQ SEQ X X X X X

SMUT

E

7 8 9

Resistive HIGH

from Master

Acknowledgement signal

form Receiver

REMARKS

SSEL1SSEL0X X X

SVF3 SVF2 SVF1 SVF0 X

SB3 SB2 SB1 SB0 SB3 , ST3 :

SRIC X X X X X SET

X X X X X 'HIGH'

cf> 'Rearin Control' of MISC.CONTROL is a NOT-supported function in present version of S1A0501X01.

So this bit should be always 'HIGH' when transferring control data.

6

DIGITAL CONTROLLED AUDIO PROCESSOR S1A0501X01

SOFTWARE SPECIFICATION

— Input Select / Trimmer Setting / Loudness Control

FUNCTION SUBADDRESS DATA BYTE VALUE REMARK

BYTE FORMAT

b7 b6 b5 b7 b6 b5 b4 b3 b2 b1 b0

Input Select

Trimmer

Setting

Loudness

0 0 0 0 0 X X X INPUT1

0 1 X X X INPUT2
1 0 X X X INPUT3

1 1 X X X *INPUT4 Not Used
0 0 X X X 0 dB
0 1 X X X - 2 dB 2 dB STEP
1 0 X X X - 4 dB (4 )
1 1 X X X - 6 dB

0 X X X ON
1 X X X OFF

7

S1A0501X01 DIGITAL CONTROLLED AUDIO PROCESSOR

SOFTWARE SPECIFICATION - Volume Control

FUNCTION SUBADDRESS DATA BYTE VALUE REMARK

BYTE FORMAT

b7 b6 b5 b7 b6 b5 b4 b3 b2 b1 b0

0 0 1 0 0 0 0 X 0 dB

0 0 0 1 X 0.6 dB

0 0 1 0 X 1.2 dB

0 0 1 1 X 1.8 dB 0.6 dB STEP

0 1 0 0 X 2.4 dB (16)

0 1 0 1 X 3.0 dB

0 1 1 0 X 3.6 dB

0 1 1 1 X 4.2 dB

1 0 0 0 X 4.8 dB

1 0 0 1 X 5.4 dB

Volume

Control

0 0 0 X 0 dB
0 0 1 X 9.6 dB
0 1 0 X 19.2 dB
1 1 1 X 28.8 dB 9.6 dB STEP
1 0 0 X 38.4 dB (8)
1 0 1 X 48.0 dB
1 1 0 X 57.6 dB
1 1 1 X 67.2 dB

1 0 1 0 X 6.0 dB

1 0 1 1 X 6.6 dB

1 1 0 0 X 7.2 dB

1 1 0 1 X 7.8 dB

1 1 1 0 X 8.4 dB

1 1 1 1 X 9.0 dB

8

DIGITAL CONTROLLED AUDIO PROCESSOR S1A0501X01

SOFTWARE SPECIFICATION - Tone Control : Bass boost/cut1

FUNCTION SUBADDRESS DATA BYTE VALUE REMARK

BYTE FORMAT

b7 b6 b5 b7 b6 b5 b4 b3 b2 b1 b0

0 1 0 0 0 0 0 - 14 dB 2 dB STEP

0 0 0 1 - 12 dB
0 0 1 0 - 10 dB
0 0 1 1 - 8 dB
0 1 0 0 - 6 dB
0 1 0 1 - 4 dB

Bass Control

0 1 1 0 - 2 dB
0 1 1 1 0 dB
1 1 1 1 0 dB
1 1 1 0 2 dB
1 1 0 1 4 dB
1 1 0 0 6 dB
1 0 1 1 8 dB
1 0 1 0 10 dB
1 0 0 1 12 dB
1 0 0 0 14 dB

9

S1A0501X01 DIGITAL CONTROLLED AUDIO PROCESSOR

SOFTWARE SPECIFICATION - Tone Control : Treble boost/cut

FUNCTION SUBADDRESS DATA BYTE VALUE REMARK

BYTE FORMAT

b7 b6 b5 b7 b6 b5 b4 b3 b2 b1 b0

0 1 0 0 0 0 0 - 11.9 dB 1.7 dB STEP

0 0 0 1 - 10.2 dB
0 0 1 0 - 8.5 dB
0 0 1 1 - 6.8 dB
0 1 0 0 - 5.1 dB
0 1 0 1 - 3.4 dB

Treble Control

0 1 1 0 - 1.7 dB
0 1 1 1 0 dB
1 1 1 1 0 dB
1 1 1 0 1.7 dB
1 1 0 1 3.4 dB
1 1 0 0 5.1 dB
1 0 1 1 6.8 dB
1 0 1 0 8.5 dB
1 0 0 1 10.2 dB
1 0 0 0 11.9 dB

10

DIGITAL CONTROLLED AUDIO PROCESSOR S1A0501X01

SOFTWARE SPECIFICATION - Fader / Miscellaneous Control DATA BYTE BYTE FORMAT

FUNCTION SUBADDRESS DATA BYTE VALUE REMARK

BYTE FORMAT

b7 b6 b5 b7 b6 b5 b4 b3 b2 b1 b0

Fader Control 0 1 1 Left Front

1 0 0 Left Rear
1 0 1 Right front
1 1 0 Right Rear

0 0 0 X X X 0 dB
0 0 1 X X X - 1.25 dB
0 1 0 X X X - 2.5 dB
0 1 1 X X X - 3.75 dB 1.25 dB
1 0 0 X X X - 5.0 dB STEP
1 0 1 X X X - 6.25 dB (8)
1 1 0 X X X - 7.5 dB

1 1 1 X X X - 8.75 dB
0 0 X X X 0 dB
0 1 X X X - 10 dB 10 dB STEP
1 0 X X X - 20 dB (4)
1 1 X X X - 30 dB

Rear-in 1 1 1 0 X X X X X ENABLE Should Be
Control 1 X X X X X DISABLE 'DISABLE'

Mute 0 X X X X X ON

1 X X X X X OFF

External 0 X X X X X ENABLE

Equalizer 1 X X X X X DISABLE

11

S1A0501X01 DIGITAL CONTROLLED AUDIO PROCESSOR

SERIAL BUS INTERFACE PROTOCOL - THE GENERAL CASE

Timing Diagram of General MICOM Interface Bus Protocol

SCL

SDA

STB

1

2

3

22 23 24

General MICOM Interface Bus Byte Format Of S1A0501X01

Bit Stream 1 - 7 8 9 - 16 17 - 24

Meanings Chip Select Code Function Code DATA

Chip Select Code = Same As I2C Bus Slave Address ( 1000000 × B )
X = Don't Care Bit (Not Used Bit)
Function Code = Transferred Data1 ( assigning Function )
DATA = Transferred Data2 ( assigning Operation )
STB Signal 'LOW' = Chip Not Selected.
STB Signal 'HIGH' = Chip Selected.

♣ Allowed Strobe Pulse Width (Maximum) ≤ 6.0ms

12

DIGITAL CONTROLLED AUDIO PROCESSOR S1A0501X01

SAMSUNG Electronics

SAMSUNG Electronics

KB22501 EVT4 TONE

Ư¼º

(12V)

Volume Step vs output Level
Input :1 Vrms
Vcc=12V

L-ON

Volume & Mute Attenuation
Input : 1Vrms
Vcc=12V

+0

-20

-40

d
B

r

-60

-80

-100
10 20k20 50 100 200 500 1k 2k 5k 10k

Color Line Style Thick Data Axis

SAMSUNG Electronics KB22501 EVT4 LOUDNESS

Loudness Boost

Yellow Solid 2 Anlr.Ampl Left
Red Solid 2 Anlr.Ampl Left

Input : 3 00mVrms, Volume=-37.8dB
Vcc=12V

+0

L-OFF

KB22501 EVT4 VR or MUTE ATT

Ư¼º

(13V)

INPUT : 1Vrms

»ó

: VR-MIN ATTÀ² , ÇÏ : MUTE ATT

Volume Attenuation

Mute Attenuation

À²

Hz

Ư¼º

(12V)

INPUT : 300mV , VR -37.8dB

Balance & Fader Step vs output Level
Input :1Vrms
Vcc=12V

L-OUT R-OUT

Balance/Fader(dB)

Bass & Treble Boost / Cut
Input : 30 0mVrms, Volume=Max
Vcc=12V

+15

+10

+5

d

+0

B

r

-5

-10

-15
10 30k20 50 100 200 500 1k 2k 5k 10k 20k

Color Line Style Thick Data Axis

Total Harmonic Distortion(T.H.D.)

SAMSUNG Electronics KB22501 EVT4 THD

Blue Solid 1 Anlr.Level A Left

Input : 1Vrms

Cyan Solid 2 Anlr.Level A Left
Green Solid 2 Anlr.Level A Left

Vcc=12V

0.05

INPUT : 300mV , VR MAX

Hz

Ư¼º

INPUT : 1Vrms

»ó

: VR -20dB , ÇÏ : VR 0dB

(13V)

-10

-20

d

B

-30

r

-40

-50
10 30k20 50 100 200 500 1k 2k 5k 10k 20k

0.04

0.03

%

0.02

0.01

10 20k20 50 100 200 500 1k 2k 5k 10k

Hz

Volume -20 dB

Volume 0dB

Hz

13

S1A0501X01 DIGITAL CONTROLLED AUDIO PROCESSOR

SAMSUNG Electronics

Input CrossTalk

SAMSUNG Electronics KB22501 FUNCTION CROSS TALK

Selected Input : 1Vrms, Otherwise : Short

INPUT : 1Vrms

Ư¼º

(13V)

Vcc=12V

+0

-20

-40

d

B

r

-60

-80

-100
10 20k20 50 100 200 500 1k 2k 5k 10k

Hz

L/R Channel Separation
Selected Channel Input :1 Vrms

KB22501 L/R SEPARATION

INPUT : 1Vrms

Ư¼º

The Other : Short, Vcc=12V

+0

-20

-40

d
B

-60

r

-80

-100
10 20k20 50 100 200 500 1k 2k 5k 10k

Hz

(13V)

14

DIGITAL CONTROLLED AUDIO PROCESSOR S1A0501X01

APPLICATION CIRCUIT 1

MODE I : 3 INPUTS - 1 OUTPUT

VCC

RIN3

RIN2

RIN1

LIN3

LIN2

LIN1

0.1uF

+

100uF

1.0uF
+

0.0027uF

0.0027uF

+

2.2uF

0.47uF

2.2uF

+

2.2uF

+

2.2uF

+

0.47uF

2.2uF

+

2.2uF

+

2.2uF

+

10uF 10uF

VCC

1

CREF

2

AGND

3

LTC

4

RTC

5

RVOLIN

6

RSRCOUT

7

RVOLC

8

RIN3

9

RIN2

10

RIN1

11

LVOLC

12

LIN3

13

LIN2

14

LIN1

15

OCC1 OCC216

32

STB
SCL

31
30

SDA

DREF

29

DGND

28
27

LFO

26

RFO
LRO

25

RRO

24
23

RBC1
RBC2

LBC1
LBC2

22
21
20
19
18

S1A0501X01

LSRCOUT

LVOLIN

17

0.1uF

4.7uF

4.7uF

4.7uF

4.7uF

0.1uF

0.1uF

0.1uF

0.1uF

2.2uF

VDD

100k100k

MICOM

Control Data

+

+
+
+
+

VO(LF)
VO(RF)
VO(LR)
VO(RR)

5.6K

5.6K

+

15

S1A0501X01 DIGITAL CONTROLLED AUDIO PROCESSOR

APPLICATION CIRCUIT 2

MODE II : 3 INPUTS - 1 OUTPUT W/ EXT.EQUIPMENT

VCC

0.1uF

EXTERNAL

EQUIPMENT

RIN3

RIN2

RIN1

LIN3

LIN2

LIN1

+

100uF

1.0uF
+

0.0027uF

0.0027uF

2.2uF

+

+

0.47uF

2.2uF

+

2.2uF

+

2.2uF
+

0.47uF

2.2uF

+

2.2uF

+

2.2uF

+

10uF 10uF

VCC

1

CREF

2

AGND

3

LTC

4

RTC

5

RVOLIN

6

RSRCOUT

7

RVOLC

8

RIN3

9

RIN2

10

RIN1

11

LVOLC

12

LIN3

13

LIN2

14

LIN1

15

OCC1 OCC216

32

STB
SCL

31
30

SDA

DREF

29

DGND

28
27

LFO

26

RFO

LRO

25

RRO

24
23

RBC1

S1A0501X01

RBC2

22

LBC1

21

LBC2

20

LSRCOUT

LVOLIN

19
18
17

0.1uF

4.7uF

4.7uF

4.7uF

4.7uF

0.1uF

0.1uF

0.1uF

0.1uF

2.2uF

2.2uF

VDD

100k100k

MICOM

Control Data

+

+
+
+
+

VO(LF)
VO(RF)
VO(LR)
VO(RR)

5.6K

5.6K

EXTERNAL

+

EQUIPMENT

+

Cf> Let the microprocessor set ‘SEQ’ signal to 0, if an external device is an audio-signal controlled processor such
as a graphic equalizer.

16

DIGITAL CONTROLLED AUDIO PROCESSOR S1A0501X01

APPLICATION CIRCUIT 3

MODE III : 3 INPUTS - 1 OUTPUT (NOT I2C BUS PROTOCOL)

VCC

RIN3

RIN2

RIN1

LIN3

LIN2

LIN1

0.1uF

+

100uF

1.0uF
+

0.0027uF

0.0027uF

+

2.2uF

0.47uF

2.2uF

+

2.2uF

+

2.2uF

+

0.47uF

2.2uF

+

2.2uF

+

2.2uF

+

10uF 10uF

VCC

1

CREF

2

AGND

3

LTC

4

RTC

5

RVOLIN

6

RSRCOUT

7

RVOLC

8

RIN3

9

RIN2

10

RIN1

11

LVOLC

12

LIN3

13

LIN2

14

LIN1

15

OCC1 OCC216

32

STB
SCL

31
30

SDA

DREF

29

DGND

28
27

LFO

26

RFO
LRO

25

RRO

24
23

RBC1

S1A0501X01

RBC2

22

LBC1

21

LBC2

20

LSRCOUT

LVOLIN

19
18
17

100k

0.1uF

4.7uF

4.7uF

4.7uF

4.7uF

0.1uF

0.1uF

0.1uF

0.1uF

2.2uF

VDD

100k

100k

MICOM

Control Data

+

+
+
+
+

VO(LF)
VO(RF)
VO(LR)
VO(RR)

5.6K

5.6K

+

17

S1A0501X01 DIGITAL CONTROLLED AUDIO PROCESSOR

NOTES

18