Datasheet MSM7570-01TS-K Datasheet (OKI)

E2U0030-28-82

¡ Semiconductor

This version: Aug. 1998

Previous version: Nov. 1996

MSM7570-01

Multi-Function ADPCM CODEC

GENERAL DESCRIPTION

The MSM7570-01, developed for advanced digital cordless telephone systems, is a single channel ADPCM CODEC IC which performs mutual transcoding between the analog voice band signal and 32 kbps ADPCM serial data. This device includes DTMF Tone and several types of tone generation, transmit/receive data mute and gain control, side-tone path and gain control, and VOX function. Using advanced ciruit technology, the device operates using a single 5 V power supply and have low power consumption.

FEATURES

••

• Single 5 V Power Supply Operation VDD: 4.5 V to ␣ 5.5 V

••

• ADPCM Algorithm : ITU-T G.726 (32 kbps, 24 kbps, 16 kbps)

••

• Transmit/Receive Full-Duplex Single Channel Operation

••

• Transmit/Receive Synchronous Mode Only

••

• PCM Data Format : A-law/µ-law Selectable

••

• Serial PCM/ADPCM Transmission Data Rate :64 kbps to 2048 kbps

••

• Low Power Consumption

•• Operating Mode : 70 mW Typ. (V Power-Down Mode : 0.5 mW Typ. (V

••

• Two Analog Input Amplifier Stages : Externally Adjustable Gain

••

• Analog Output Stage :

••

Push-pull Drive (direct drive of 350 W␣ + 120 nF)

••

• Master Clock Frequency : 12.288/19.200 MHz Selectable

••

• Transmit/Receive Mute, Transmit/Receive Programmable Gain Control

••

• Side Tone Path with Programmable Attenuation (8-step Level Adjustment)

••

• Built-in DTMF Tone Generator

••

• Built-in Various Ringing/Function Tones Generator

••

• Built-in Various Ring Back Tone Generator

••

• Serial MCU Interface Control

••

• Built-in Sounder Driving Amplifier

••

• Built-in VOX Control

•• Transmit side : Voice Signal Detect Receive side : Background Noise Generation

••

• Characteristic Evaluation Board.

••

• Package:

••

32-pin plastic TSOP (TSOPI32-P-814-0.50-1K) (Product name: MSM7570-01TS-K)

= 5.0 V)

DD

= 5.0 V)

DD

1/26

2/26

¡ Semiconductor

MSM7570-01

BLOCK DIAGRAM

+

–1

+1

–1

VOXO

XSYNC IS

PCMSI

PCMSO

BCLK

PCMRI

PCMRO

IR

RSYNC

VOXI

ADPCM CODER

TXMUTE

RXON/OFF

RXPAD

Ex-

pan-

der

Receive gain adjust

LPF

D/A

Conv.

RC

Filter

Clock/Timing

MCU Interface

V

REF

Voice

Detect

Compan-

der

Transmit gain adjust

Tone gain adjust

BPF

TXON/OFF

A/D

Conv.

RC

Filter

DTMF/other

Tone Generator

Noise Generator

Side tone gain adjust

AIN1–

AIN1+

GSX1

AIN2

GSX2

AOUT+

AOUT–

PWI

VFRO

SAO+

SAO–

SG

VDDC

DGC

AGC

DEN

EXCK

DIN

DOUT

MCK

PDN/

RESET

RXMUTE

ADPCM

DECODER

Power Detect

P

/

S

P

/

S

P

/

S

/

P

S

/

P

S

/

P

–

+

–

+

–

++

¡ Semiconductor

PIN CONFIGURATION (TOP VIEW)

MSM7570-01

AG SG

AIN1+ AIN1–

GSX1

AIN2 GSX2 VFRO

PWI AOUT– AOUT+

SAO+ SAO–

PDN/RESET

VOXI

V

DD

10 11 12 13 14 15 16

1 2 3 4 5 6 7 8 9

32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17

DG BCLK XSYNC RSYNC PCMSO PCMSI IS IR

PCMRO PCMRI MCK DEN EXCK DIN

DOUT VOXO

32-Pin Plastic TSOP

3/26

¡ Semiconductor

MSM7570-01

PIN AND FUNCTIONAL DESCRIPTIONS

AIN1+, AIN1–, AIN2, GSX1, GSX2

Transmit analog inputs and the output for transmit gain adjustment. AIN1– (AIN2) connects to the inverting input of the internal transmit amplifier. AIN1+ connects to non-inverting input of the internal transmit amplifier. GSX1 (GSX2) connects to the internal transmit amplifier output. Refer to Fig.1 for gain adjustment.

VFRO, AOUT+, AOUT–, PWI

Receive analog outputs and the output for receive gain adjustment. VFRO is the receive filter output. AOUT+ and AOUT– are differential analog signal outputs which can directly drive ZL = 350 W + 120 nF or a 1.2 kW load. Refer to Fig.1 for gain adjustment.

Differential

Analog Input

0.1 mF

Vi

10 mF

+

–

Transmit Gain: V = (R2/R1) ¥ (R4/R3)

Receive Gain: Vo/V = 2 ¥ (R6/R5)

= 120 nF

Z

L

+ 350 W

C1

C1 R1

C2

V

GSX2

VFRO

O

R1

R3

/Vi

Differential Analog Output

R2

R4

R5

R6

R2

AIN1–

AIN1+

GSX1

SG AIN2

GSX2

VFRO

PWI

AOUT–

AOUT+

–

+

–

+

–1

to ENCODER

–

+

V

REF

from DECODER

SELECT

= 120 nF

Z

L

+ 350 W

Figure 1 Analog Input/Output Interface

Differential Sound Output

SAO+

SAO–

+1

–1

4/26

¡ Semiconductor

MSM7570-01

SAO+, SAO–

Differential analog outputs for sound output. Control register data CR4-B5 determines the output pins (AOUT+ and AOUT- /SAO+ and SAO) for the voice signal and an acoustic component of the sound tone, DTMF tone, R tone, F tone, and various types of tones at either the VFRO pin or the SAO+ and SAO- pins. The output load conditions of these pins are the same as those of AOUT+ and AOUT-.

SG

Analog signal ground. The output voltage of this pin is approximately 2.4 V. Put the bypass capacitors (10 µF in parallel with 0.1 µF ceramic type) between this pin and AG to get the specified noise characteristics. During power-down, this output voltage is 0 V. The SG voltage if necessary should be used via a baffer.

AG

Analog ground.

DG

Digital ground. This ground is separated from the analog signal ground pin (AG). The DG pin must be kept as close as possible to AG on the PCB.

V

DD

+5 V power supply.

PDN/RESET

Power down and reset control input. A “0” level makes the IC enter a power down state. At the same time, all control register data is reset to the initial state. Set this pin to “1” during normal operating mode. The power down state is controlled by a logical OR with CR0-B5 of the control register. When using PDN/RESET for power down and reset control, set CR0-B5 to digital “0”. The reset width (during "L") should be 200 ns or more.

MCK

Master clock input. The frequency must be 12.288 MHz or 19.2 MHz. The applied clock frequency is selected by the control register data CR0-B6. The master clock signal may be asynchronous with BCLK, XSYNC, and RSYNC.

5/26

¡ Semiconductor

MSM7570-01

PCMSO

Transmit PCM data output. PCM is output from MSB in synchronization with the rising edge of BCLK and XSYNC.

PCMSI

Transmit PCM data input. This signal is converted to the transmit ADPCM data. PCM is shifted in synchronization with the falling edge of BCLK. Normally, this pin is connected to PCMSO.

PCMRO

Receive PCM data output. PCM is the output signal after ADPCM decoder processing. This signal is output serially from MSB in synchronization with the rising edge of BCLK and RSYNC.

PCMRI

Receive PCM data input. PCM is shifted on the rising edge of the BCLK and input from MSB. Normally, this pin is connected to PCMRO.

IS

Transmit ADPCM signal output. After having encoded PCM with ADPCM, this signal is output from MSB in synchronization with the rising edge of BCLK and XSYNC. This pin is an open drain output and remains in a high impedence state during power-down. IS requires a pull-up resistor.

IR

Receive ADPCM signal input. This input signal is shifted serially on the falling edge of BCLK in synchronization with RSYNC and input from MSB.

BCLK

Shift clock input for the PCM data (PCMSO, PCMSI, PCMRO, PCMRI) and the ADPCM data(IS, IR) . The frequency is set in the 64 kHz to 2048 kHz range.

6/26

¡ Semiconductor

MSM7570-01

XSYNC

Transmit PCM and ADPCM data 8 kHz synchronous signal input. Synchronize this signal with BCLK signal . XSYNC is used to indicate the MSB of the transmit serial PCM and ADPCM data stream. Be sure to input the XSYNC signal because it is also used as the input of the timing generator.

RSYNC

Receive PCM and ADPCM data synchronous signal input. Synchronize this signal with BCLK signal. RSYNC is used to indicate the MSB of the receive serial PCM and ADPCM data stream.

VOXO

Transmit VOX function signal output. VOX function recognizes the presence or absence of the transmit voice signal by detecting the signal energy. “1” and “0” levels set on this pin correspond to the presence and the absence of voice, respectively. This result appears at the register data CR7-B7. The signal energy detect threshold is set by the control register data CR6-B6, B5.

VOXI

Signal input for receive VOX function. A “1” level at VOXI indicates the presence of a voice signal. The decoder block processes normal receive signal, and the voice signal appears at analog output pins . The “0” level indicates the absence of a voice signal. Background noise generated in this device is transferred to the analog output pins. The background noise amplitude is set by the control register CR6. Because this signal is ORed with the register data CR6-B3, set the control register data CR6-B3 to digital “0”.

7/26

¡ Semiconductor

Voice Input GSX2

MSM7570-01

Silence

VOXO

VOXI

Voice Output VFRO

T

VXON

Voice Detect

Voice

T

VXOFF

Silence Detect (Hang-over time)

Voice

(a) Transmit VOX Function Timing Diagram

Silence

Voice

Normal Voice Signal Decoded Time period

Background Noise

Voice

(b) Receive VOX Function (CR6-B3: digital "0") Timing Diagram

Note: VOXO, VOXI functions become valid when setting CR6-B7 to digital “1”.

Figure 2 VOX Function

8/26

¡ Semiconductor

,

MSM7570-01

DEN , EXCK, DIN, DOUT

Serial control ports for MCU interface. Reading and writing data are performed by an external MCU through these pins. Eight registers with eight bits are provided on the devices. DEN is the “Enable” control signal input, EXCK is the data shift clock input, DIN is the address and data input, and DOUT is the data output. Fig.3 shows the input/output timing diagram.

DEN

EXCK

W

A2

DIN

A1 A0 B7 B6 B5 B4 B3 B2 B1 B0

DOUT

DEN

EXCK

DIN

DOUT

R A2A1A0

High Impedance

Figure 3 MCU Interface Input/Output Timing

Table 1 shows the register map.

Name

CR0

CR1

CR2

CR3

CR4

Address

A2 A1 A0

000

001

010

011

100

B7 B6 B5 B4 B3 B2 B1 B0

A/m

SEL

MODE1 MODE0

TX

ON/OFFTXGAIN2TXGAIN1TXGAIN0RXON/OFFRXGAIN2RXGAIN1RXGAIN0

Side Tone

GAIN2 DTMF/

OTHERS

SEL

High Impedance

(a) Write Data Timing Diagram

B7 B6 B5 B4 B3 B2 B1 B0

(b) Read Data Timing Diagram

Table-1

Control and Detect Data

MCK

SEL

Side Tone

GAIN1

TONE

SEND

PDN

ALL

TX

RESETRXRESETTXMUTERXMUTE

Side Tone

GAIN0

SAO/

VFRO

——

TONE

ON/OFF

TONE4 TONE3 TONE2 TONE1 TONE0

TONE

GAIN3

——

—

TONE

GAIN2

TONE

GAIN1

R/W

PDN

R/W

SAO/AOUT

RX

R/W

PAD

R/W

TONE

R/W

GAIN0

R/W

CR5

CR6

CR7

101

110

111

————————

VOX

ON/OFFONLVL1

VOX

OUT

TX NOISE

LVL1

ON

LVL0

TX NOISE

LVL0

OFF

TIME

—————

VOX

IN

RX NOISE

LEVEL SEL

RX NOISE

LVL1

RX NOISE

LVL0

R/W

R

R/W : Read/Write enable R : Read only register.

9/26

¡ Semiconductor

ABSOLUTE MAXIMUM RATINGS

MSM7570-01

Parameter

Power Supply Voltage

Analog Input Voltage

Digital Input Voltage

Storage Temperature

Symbol

V

DD

V

AIN

V

DIN

T

STG

Condition

—

RECOMMENDED OPERATING CONDITIONS

Parameter

Power Supply Voltage

Operating Temperature

Digital Input High Voltage

Digital Input Low Voltage

Master Clock Frequency

Bit Clock Frequency

Synchronous Signal Frequency

Clock Duty Ratio

Digital Input Rise Time

Digital Input Fall Time

Transmit Sync Signal Setting Time

Receive Sync Signal Setting Time

Synchronous Signal Width

PCM, ADPCM Set-up Time

PCM, ADPCM Hold Time

Digital Output Load

Bypass Capacitors for SG

Symbol

V

DD

Ta

V

IH

V

IL

f

MCK1

f

MCK2

f

BCK

f

SYMC

D

C

t

Ir

t

If

t

XS

t

SX

t

RS

t

SR

t

WS

t

DS

t

DH

R

DL

C

DL

C

SG

Condition Min. Typ. Max. Unit

Voltage must be fixed 4.5 — 5.5 V

— –25 +25 +70 °C

MCK, XSYNC, RSYNC, PCMRI, PCMSI, BCLK, IR, PDN/RESET,

DEN, EXCK, DIN

MCK, XSYNC, RSYNC, PCMRI, PCMSI, BCLK, IR, PDN/RESET,

DEN, EXCK, DIN

MCK (CR0–B6 = "0") –

MCK (CR0–B6 = "1") –

BCLK 64 — 2048 kHz

XSYNC, RSYNC — 8.0 — kHz

MCK, BCLK, EXCK 30 50 70

MCK, XSYNC, RSYNC, PCMRI, PCMSI, BCLK, IR, PDN/RESET,

DEN, EXCK, DIN

MCK, XSYNC, RSYNC, PCMRI, PCMSI, BCLK, IR, PDN/RESET,

DEN, EXCK, DIN

BCLK to XSYNC 100 — — ns

XSYNC to BCLK 100 — — ns

BCLK to RSYNC 100 — — ns

RSYNC to BCLK 100 — — ns

XSYNC, RSYNC 1 BCLK — 100 ms

—

IS (Pull-up Resistor) 500 — — W

IS, PCMSO, PCMRO, VOXO, DOUT

SG to AG

Rating

–0.3 to +7

–0.3 to V

DD

+ 0.3

–55 to +150

2.2

0— V

0.01%

—VDDV

0.6

12.288 +

19.200 +

0.01%

Unit

V

°C

MHz

%

——50ns

100 — — ns

100 — — ns—

— — 100 pF

10 + 0.1 — — mF

10/26

¡ Semiconductor

ELECTRICAL CHARACTERISTICS

DC and Digital Interface Characteristics

Parameter

Power Supply Current

Symbol

I

DD1

I

DD2

Operating Mode,

No Signal, (V Power Down Mode,

Condition

5.0 V)

=

DD

(V

DD

5.0 V)

=

MSM7570-01

(V

4.5 V to 5.5 V, Ta = –25°C to +70°C)

DD =

Min.

—

Typ.

14

0.1

Max.

28

0.2

Unit

mA

Input High Voltage

Input Low Voltage

Input Leakage Current

Output Low Voltage

Output Leakage Current

Input Capacitance

Output Resistance

V

IH

V

IL

I

VI = V

IH

I

IL

V

OL

I

O

C

IN

R

OSG

DD

VI = 0 V

1 LSTTL, Pull-up: 500 W

IS

SG — 25 50 kW

SG´GND 10+0.1 mF

SG Warm-up Time

T

SG

(Rise time to 90% of max. level)

Transmit Analog Interface Characteristics

Parameter

Input Resistance

Output Load Resistance

Output Load Capacitance

Output Amplitude

Input Offset Voltage

Symbol

R

INX

R

LGX

C

LGX

V

OGX

V

OFGX

AIN1+ , AIN1– , AIN2

GSX1, GSX2

GSX1, GSX2, R

Pre–OPAMPs

—

2.2

0.0

—

0.0

—

0.2

—

V

0.6

2.0

0.5

0.4

10

DD

mA

— —5—pF

— 700 — ns

4.5 V to 5.5 V, Ta = –25°C to +70°C)

(V

DD =

Condition

= 20 kW

L

Min.

10

20

—

–20

Typ.

—

Max.

—

100

*2.226

+20

Unit

MW

kW

V

mV

V

pF

PP

* –3.0 dBm (600 W) = 0 dBm0, + 3.14 dBm0 = 2.226 VPP (A-law)

–3.0 dBm (600 W) = 0 dBm0, + 3.17 dBm0 = 2.226 VPP (m-law)

11/26

¡ Semiconductor

Receive Analog Interface Characteristics

Parameter

Input Resistance

Output Load Resistance

Output Capacitance

Output Voltage Level

Offset Voltage

Open Loop Gain

Symbol

R

INPW

R

LVF

R

LAO

C

LVF

C

LAO

V

OVF

V

OAO

V

OFVF

V

OFAO

G

DB

PWI

VFRO

AOUT+, AOUT–, SAO+, SAO–

VFRO

AOUT+, AOUT–, SAO+, SAO–

VFRO, AOUT+,

AOUT–, SAO+, SAO–

VFRO

AOUT+, AOUT– (GAIN = 0 dB,

Power amp only) SAO+, SAO–

Power amp (0.3 to 3.4 kHz,

ZL = 350 W + 120 nF)(See Fig.1)

Condition

= 20 kW

R

L

R

= 1.2 kW

L

Z

= 350 W

L

+ 120 nF(See Fig.1)

MSM7570-01

(V

4.5 V to 5.5 V, Ta = –25°C to +70°C)

DD =

Min.

10

20

1.2

—

—— V

–100

–20

40——dB

Typ.

—

Max.

—

100

*2.226

+100

+20

Unit

MW

kW

pF

V

PP

V

PP

mV

* –3.0 dBm (600 W) = 0 dBm0, + 3.14 dBm0 = 2.226 VPP (A-law)

–3.0 dBm (600 W) = 0 dBm0, + 3.17 dBm0 = 2.226 VPP (m-law)

12/26

¡ Semiconductor

MSM7570-01

AC Chracteristics

Parameter

Transmit Frequency

Response

Receive Frequency

Response

Transmit Signal

to Distortion Ratio

Receive Signal

to Distortion Ratio

Transmit Gain

Tracking

Receive Gain

Tracking

(V

4.5 V to 5.5 V, Ta = –25°C to +70°C)

DD =

Condition

Symbol

Freq.

Level

Others

Min.

Typ.

Max.—Unit

(dBm0)(Hz)

L

T1

0 to 60

T2

300 to 3000 –0.15 — +0.20 dB

T3

T4

T5

T6

R1

R2

R3

R4

R5

1020 Reference dB

0

—

3300 –0.15 — +0.80 dB

3400 0 — 0.80 dB

3968.75 13 — — dB

0 to 3000 –0.15 — +0.20 dB

1020 Reference dB

3300 –0.15 — +0.80 dB0

—

3400 0 — 0.80 dB

3968.75 13 — — dB

L

OSS

SD T1 35 —3

SD T2 35 —0

SD T3 35 —–30

1020

(*1)

SD T4

SD T5 23 —–45

SD R1 —3

SD R2 —0

SD R3 —–30

1020

(*1)

SD R4

SD R5 —–45

GT T1 –0.2 +0.2

GT T2 Reference

GT T3 1020 –0.2 +0.2–40

GT T4 –0.5 +0.5

GT T5 –1.2 +1.2

GT R1 –0.2 +0.2

GT R2 Reference

GT R3 1020 –0.2 +0.2

GT R4 –0.5 +0.5

GT R5 –1.2 +1.2

3

–10

–50

–55

3

–10

–40

–50

–55

—

25

28 —–40

35

28

23

—

dB

—–40

dB

*1 Use the P-message weighted filter

13/26

¡ Semiconductor

MSM7570-01

AC Characteristics (Continued)

Parameter

Idle Channel Noise

Absolute Signal

Amplitude

Power Supply Noise

Rejection Ratio

Digital Output

Delay Time

PCM and ADPCM

Interface

Serial Port Digital

Input/Output Setting

Time

Symbol

N

IDLT

N

IDLR

A

VT

A

VR

P

SRRT

P

SRRR

t

SDX

t

SDR

t

XD1

t

RD1

t

XD2

t

RD2

t

XD3

t

RD3

t

M1

t

M2

t

M3

t

M4

t

M5

t

M6

t

M7

t

M8

t

M9

t

M10

t

M11

f

EXCK

Noise Freq.

: 0 to 50 kHz

4.5 V to 5.5 V, Ta = –25°C to +70°C)

(V

DD =

Condition

Freq.

Level Min. Typ. Max. Unit

Others

(dBm0)(Hz)

–68

———

——

AIN = SG

—

(*1)

(*2)

—

(–71)

–72

(–75)

dBm0p

(dBmp)

0.548

GSX2

0.488

0.615

Vrms

(*3)

1020

0

0.548

VFRO

0.488

0.615

Vrms

(*3)

Noise Level

30——dB

—

: 50 mV

PP

1 LSTTL + 100 pF,

See

30——dB

0 — 200

ns

—

Pull-up: 500 W

Fig.4

0 — 200

ns

50——ns

= 100 pF

C

L

— See

Fig.5

100 — — ns

50——ns

0 — 50 ns

50——ns

0 — 50 ns

——10MHz—— EXCKShift Clock Frequency

*1 Use the P-message weighted filter *2 PCMRI input code "11010101"(A-law)

"11111111"(m-law)

*3 0.548 Vrms = 0 dBm0 = –3.0 dBm

Note: All ADPCM coder and decoder characteristics comply with ITU-T Recommendation

G.726.

14/26

¡ Semiconductor

AC Characteristics (DTMF and Other Tones)

(V

4.5 V to 5.5 V, Ta = –25°C to +70°C)

DD =

Parameter

Frequency Difference

Original (reference)

Tone Signal Level

*4

Symbol

D

FT1

D

FT2

V

TL

V

TH

V

RL

V

RH

Condition

Min. Typ. Max. Unit

DTMF Tones –7 — +7 Hz

Other Tones

Transmit Tones

(Gain setting 0 dB)

Receive Tones

(Tone generator

gain setting –6 dB)

DTMF (Low) DTMF (High)

and Other Tones

DTMF (Low)

DTMF (High)

and Other Tones

–7—+7Hz

–18

–16

–10

–8

Relative Level of

DTMF Tones

DTMFVTH/VTL

, VRH/V

RL

1 dBmOR

*4 Does not contain the setting value set for the programmable gain

–16

–14

–8

–6

2

MSM7570-01

–14

–12

–6

–4

dBmO

3

AC Characteristics (Programmable Gain Stages)

Parameter

Gain Accuracy

Symbol

D

G

All gain stages, to programmed value –1 0 +1 dB

Condition

AC Characteristics (VOX Function)

Parameter

Symbol

Transmit VOX Detect Time

(Voice Signal ON/OFF Detect Time

)

Transmit VOX Detect Level

Accuracy

(Threshold Level)

t

VXON

t

VXOF

D

OFF Æ ON — 10 — ms

ON Æ OFF

To the values (CR6-B6, B5)

VX

Condition

VOXO,

See Fig.2

*5 When single tone is input at 1000 Hz.

4.5 V to 5.5 V, Ta = –25°C to +70°C)

(V

DD =

Min. Typ. Max. Unit

4.5 V to 5.5 V, Ta = –25°C to +70°C)

(V

DD =

Min. Typ. Max. Unit

*5

150/310 160/320 170/330 ms

–2.5 dB

0 +2.5

15/26

¡ Semiconductor

TIMING DIAGRAM

Transmit Side PCM/ADPCM Data Interface

MSM7570-01

BCLK

XSYNC

PCMSO

BCLK

0

t

XS

t

XS

12345678910

t

SX

XD1

t

WS

XD2

MSB LSB

t

SDX

123456789100

t

SX

XSYNC

IS

t

SDX

t

XD1

t

XD2

MSB LSB

Receive Side PCM/ADPCM Data Interface

BCLK

RSYNC

IR

0

t

RS

12345678910

t

SR

t

DS

t

WS

t

DH

MSB

t

LSB

XD3

t

XD3

BCLK

RSYNC

PCMRO

123456789100

t

SR

RD1

t

RD2

t

RD3

t

RS

MSB LSB

t

SDR

Figure 4 PCM/ADPCM Data Interface

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Serial Port Data Transfer for MCU Interface

DEN

t

M5

EXCK

t

M2

123456

11 12

MSM7570-01

t

M10

DIN

DOUT

t

M1tM3

t

M4

M6

t

M7

W/R A2 A1 A0 B7

t

M8

B7

Figure 5 MCU Interface

t

M9

B1 B0

t

M11

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MSM7570-01

FUNCTIONAL DESCRIPTION

Control Registers

(1) CR0 (Basic operating mode)

B0B1B2B3B4B5B6B7

CR0

Initial Value

A/m SEL

0

MCK SEL

0

PDN ALL

0

——

—

000

—

0

Note : Initial Value : Reset state by PDN/RESET B7 ...PCM Companding law select; 0/µ-law, 1/A-law

B6 ...Master clock frequency select; 0/12.288 MHz, 1/19.200 MHz B5 ...Power down (entire system); 0/Power on, 1/Power down

When using this data for power down control, set pin PDN/RESET at “1” level.

The control registers are not reset by this signal. B2 ...Not used B1 ...Not used B0 ...Power Down for Sound output amps: (SAO+, SAO–), or Receiver output amp (AOUT+,

AOUT–, VFRO );

If this data is set to digital “1”, either a pair of sound amplifiers or a pair of reciver

amplifiers enters the power down state depending on the set data on CR4-B5.

If this data is set to digital "0", sound amplifiers and receiver amplifiers are in the power-

on state. B4, B3 ... Not used (These pins are used to test the devise. They should be set to "0" during

normal operation.)

PDN

SAO/AOUT

0

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(2) CR1 (ADPCM block operating mode)

MSM7570-01

B1

—

0

CR1

Initial Value

B7

MODE1

0

B6

MODE0

0

B5

TX RESET

0

B4

RX RESET

0

B3

TX MUTE

0

B2

RX MUTE

0

B7, B6 ... ADPCM data compression algorithm select;

(0, 0): 32 kbps (0, 1): 64 kbps (data through) (1, 0): 24 kbps

(1, 1): 16 kbps B5 ... ADPCM of transmit reset (specified by G.726); 1/Reset* B4 ... ADPCM of receive reset (specified by G.726 ); 1/Reset* B3 ... ADPCM transmit data mute, 1/Mute B2 ... ADPCM receive data mute, 1/Mute B1 ... Not used B0 ... Receive side PAD, 1/inserted,12 dB loss

0/no PAD

* The reset width should be 125 ms or more.

The transmitter and receiver can not be reset separately They must be reset at the same time.

B0

RX PAD

0

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MSM7570-01

(3) CR2 (PCM CODEC operational mode setting and transmit/receive gain adjustment)

B1

RX GAIN1

1

CR2

Initial Value

B7

TX ON/OFF

0

B6

TX GAIN2

0

B5

TX GAIN1

1

B4

TX GAIN0

1

B3

RX ON/OFF

0

B2

RX GAIN2

0

B7 ... PCM Coder disable; 0/Enable, 1/Disable (transmit PCM idle pattern) B6, B5, B4 ... Transmit gain adjustment, refer to Table-2. B3 ... PCM Decoder disable; 0/Enable, 1/Disable (receive PCM idle pattern) B2, B1, B0 ... Receive gain setting, refer to Table-2.

Table-2

B6 B5 B4 Transmit Gain B2 B1 B0 Receive Gain

0 0 0 –6 dB 0 0 0 –6 dB

001 –4 dB 001

010 –2 dB 010

011 0 dB 011

100 +2 dB 100

101 +4 dB 101

110 +6 dB 110

111 +8 dB 111

–4 dB

–2 dB

0 dB

+2 dB

+4 dB

+6 dB

+8 dB

B0

RX GAIN0

1

This programmable gain table should be assigned, not only for transmit/receive voice signal and the transmitted DTMF and other tones. The transmission of these tone signals is enabled by the CR4-B6 data described later. The original (reference) signal amplitude of these tones is analogically defined as follows.

DTMF low-group-tones.................................... –16 dBm0

DTMF high-group-tones and others............... –14 dBm0

For example, when selecting +8 dB (B6, B5, B4) = (1,1,1) as a transmit gain, each tone signal amplitude with an analogical expression on the pin PCMSO becomes as follows .

DTMF low-group tones .................................... –8 dBm0

DTMF high-group tones and other tones ...... –6 dBm0

Gain setting for the side tone (path to receive side from transmit side) and the receive side tone is performed by register CR3.

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(4) CR3 (Side tone and other tone generator gain setting)

MSM7570-01

CR3

Initial Value

B7

Side. Tone

GAIN2

B6

Side. Tone

GAIN1

B5

Side. Tone

GAIN0

B4

TONE

ON/OFF

B3

TONE

GAIN3

B2

TONE

GAIN2

B1

TONE

GAIN1

B7, B6, B5 ... Side tone path gain setting, refer to Table-3. B4 ... Tone generator enable; 0/Disable, 1/Enable B3, B2, B1, B0 ... Tone generator gain adjustment for receive side, refer to Table-4

Table-3

B7 B6 B5 Side Tone Path Gain

000 OFF

0 0 1 –21 dB

010

011

100

101

110

111

–19 dB

–17 dB

–15 dB

–13 dB

–11 dB

–9 dB

B0

TONE

GAIN0

0000000

0

Table-4

B3 B2 B1 B0 Tone Generator Gain B3 B2 B1 B0 Tone Generator Gain

0000 –36 dB 1000 –20 dB

0001 –34 dB 1001 –18 dB

0010 –32 dB 1010 –16 dB

0011 –30 dB 1011 –14 dB

0100 –28 dB 1100 –12 dB

0101 –26 dB 1101 –10 dB

0110 –24 dB 1110 –8 dB

0111 –22 dB 1111 –6 dB

The tone generator gain setting table for the receive side, as shown in Table-4, depends upon the following reference level.

DTMF low-group tones ................................–2 dBm0

DTMF high-group tones and others ............ 0 dBm0

For example, when selecting –6 dB (B3, B2, B1, B0) = (1, 1, 1, 1) as a tone generator gain, each DTMF tone signal amplitude on SAO+/SAO– or VFRO is as follows.

DTMF low-group tone..................................–8 dBm0

DTMF high-group tone or other tones ....... –6 dBm0

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MSM7570-01

(5) CR4 (Tone genereator operating mode and frequency select)

B0B1B2B3B4B5B6B7

CR4

Initial Value

DTMF/OTHERS

SEL

TONE

SEND

SAO/

TONE0TONE1TONE2TONE3TONE4

VFRO

00000000

B7 ... DTMF or other tones select; 0/Others, 1/DTMF B6 ... Tone transmit enable (Transmit side); 0/Voice signal (transmit), 1/Tone transmit B5 ... Tone output pin select (Receive side); 0/VFRO, 1/SAO+ and SAO– B4, B3, B2, B1, B0 ... Tone frequency setting, referred to Table-5-1 and 5-2.

(a) B7 = 1 (DTMF tone)

Table-5-1

B4 B3 B2 B1 B0 Frequency B4 B3 B2 B1 B0 Frequency

* 0 0 0 0 697 Hz + 1209 Hz * 1 0 0 0 852 Hz + 1209 Hz

0 0 0 1 697 Hz + 1336 Hz 1 0 0 1 852 Hz + 1336 Hz

**

0 0 1 0 697 Hz + 1477 Hz 1 0 1 0 852 Hz + 1477 Hz

**

0 0 1 1 697 Hz + 1633 Hz 1 0 1 1 852 Hz + 1633 Hz

**

0 1 0 0 770 Hz + 1209 Hz 1 1 0 0 941 Hz + 1209 Hz

**

0 1 0 1 770 Hz + 1336 Hz 1 1 0 1 941 Hz + 1336 Hz

**

0 1 1 0 770 Hz + 1477 Hz 1 1 1 0 941 Hz + 1477 Hz

**

0111 1111

**770 Hz + 1633 Hz 941 Hz + 1633 Hz

*Unrelated

(b) B7 = 0 (Other tones)

Table-5-2

B4 B3 B2 B1 B0 Frequency B4 B3 B2 B1 B0 Frequency

00000

00001

00010

00011

00100

00101

00110

00111

01000

0 1 0 0 1 400 Hz Single tone 1 1 0 0 1 —

0 1 0 1 0 425 Hz Single tone 1 1 0 1 0

0 1 0 1 1 440 Hz Single tone 1 1 0 1 1

0 1 1 0 0 450 Hz Single tone 1 1 1 0 0

0 1 1 0 1 800 Hz Single tone 1 1 1 0 1

0 1 1 1 0 1000 Hz Single tone 1 1 1 1 0

0 1 1 1 1 1300 Hz Single tone 1 1 1 1 1

1k/1333 Hz, 16 Hz wamb.

800/667 Hz, 16 Hz wamb.

800/1k Hz,16 Hz wamb.

500/667 Hz,16 Hz wamb.

500/400 Hz,16 Hz wamb.

800/1k Hz, 8 Hz wamb.

500/400 Hz, 8 Hz wamb.

400 Hz,16 Hz wamb.

400 Hz,20 Hz wamb.

1 0 0 0 0 2000 Hz Single tone

1 0 0 0 1 2042 Hz Single tone

1 0 0 1 0 2514 Hz Single tone

1 0 0 1 1 500 Hz Single tone

1 0 1 0 0 667 Hz Single tone

1 0 1 0 1 1333 Hz Single tone

1 0 1 1 0 2100 Hz Single tone

10111 —

11000 —

—

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MSM7570-01

(6) CR5 (Not used)

B0B1B2B3B4B5B6B7

CR5

Initial Value 0000000

0

————————

B7 – B0..... Not used

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(7) CR6 (VOX function control)

MSM7570-01

B0

RX NOISE

LVL0

0

CR6

Initial Value

B7

VOX

ON/OFF

0

B6

ON

LVL1

0

B5

ON

LVL0

0

B4

OFF

TIME

0

B3

VOX IN

0

B2

RX NOISE

LEVEL SEL

0

B1

RX NOISE

LVL1

0

B7 ... VOX function enable; 0/Disable, 1/Enable B6, B5 ... Transmit signal energy detect (Transmit VOX) threshold (at 1000 Hz)

(0, 0): –30 dBm0 (0, 1): –35 dBm0 (1, 0): –40 dBm0 (1, 1): –45 dBm0

B4 ... Hang-over time (Fig.2, T

VXOFF)

; 0/160 ms, 1/320 ms

B3 ... Receive VOX function setting; 0/Background noise transmit, 1/Voice signal detect

When using this data for control, set pin VOXI at “0” level.

B2 ... Background noise amplitude setting; 0/Automatic, 1/Programmable by B1 and B0

Automatic : Set the noise at the voice signal amplitude when B3 (or VOXI) changes from “1” to digital “0”.

B1, B0 ... (0, 0): No noise

(0, 1): –55 dBm0 (1, 0): –45 dBm0 (1, 1): –35 dBm0

(8) CR7 (Detect register, read only)

B4

—

*

CR7

Initial Value

B7

VOX

OUT

0

B6

TX NOISE

LVL1

0

B5

TX NOISE

LVL0

0

B7 ... Transmit VOX function result; 0/Silence, 1/Voice B6, B5 ... Transmit silence level (indicator);

(0, 0) : Below –60 dBm0 Note: These outputs are valid only when the VOX (0, 1) : –50 to –60 dBm0 function is enabled by CR6-B7. (1, 0) : –40 to –50 dBm0

(1, 1) : Above –40 dBm0 B4 ... Not used B3 ... Not used B2 ... Not used B1 ... Not used B0 ... Not used

—

B0B1B2B3

—

*

—

**

*

—

For IC test

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APPLICATION CIRCUIT

MSM7570-01

MSM7570-01 TS

AG

SG AIN1+

AIN1– GSX1 AIN2

GSX2

VFRO PWI

AOUT–

AOUT+

SAO+

SAO–

PDN/RESET

VOXI

V

DD

Transmit Voice Analog Input

V

DD

– +

Receive Voice Analog Output

Sound

Power-Down/Reset Input

VOX IN

– +

1 2 3

4 5 6 7

8

9

10

11

12

13

14

15

16

* Single-ended Analog Input Stage Type

DG

BCLK

XSYNC

RSYNC

PCMSO

PCMSI

PCMRO

PCMRI

MCK

DEN

EXCK

DIN

DOUT

VOXO

32 31 30

29 28 27 26

IS

25

IR

24

23

22

21

20

19

18

17

Bit Clock (64 kHz to 2048 kHz)

8 kHz Sync. Signal Input

V

DD

ADPCM Output

ADPCM Input

Master Clock

Serial MCU

Interface

VOX OUT

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PACKAGE DIMENSIONS

TSOPI32-P-814-0.50-1K

Mirror finish

MSM7570-01

(Unit : mm)

Package material Lead frame material Pin treatment Solder plate thickness Package weight (g)

Epoxy resin 42 alloy Solder plating 5 mm or more

0.27 TYP.

Notes for Mounting the Surface Mount Type Package

The SOP, QFP, TSOP, SOJ, QFJ (PLCC), SHP and BGA are surface mount type packages, which are very susceptible to heat in reflow mounting and humidity absorbed in storage. Therefore, before you perform reflow mounting, contact Oki’s responsible sales person for the product name, package name, pin number, package code and desired mounting conditions (reflow method, temperature and times).

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Datasheet MSM7570-01TS-K Datasheet (OKI)

Specifications and Main Features

Frequently Asked Questions

User Manual