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¡ Semiconductor

MSM7570L-01/02

Figure 3 MCU Interface Input/Output Timing

Table 1 shows the register map.

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.

R/W : Read/Write enable

R : Read only register.





High Impedance

High Impedance

(a) Write Data Timing Diagram

(b) Read Data Timing Diagram

DEN

W

EXCK

DIN

A2

DOUT

A1

A0

B7

B6

B5

B4

B3

B2

B1

B0

R

A2A1A0

B7

B6

B5

B4

B3

B2

B1

B0

DEN

EXCK

DIN

DOUT















,









,















Table-1

Name

Address

A2

A1

A0

Control and Detect Data

R/W

B7

B6

B5

B4

B3

B2

B1

B0

CR0

000

R/W

A/m

SEL

MCK

SEL

PDN

ALL

——

PDN

SAO/AOUT

CR1

001

R/W

MODE1

MODE0

TX

RESET

RX

RESET

TX

MUTE

RX

MUTE

—

RX

PAD

CR2

010

R/W

TX

ON/OFF

TX

GAIN2

TX

GAIN1

TX

GAIN0

RX

ON/OFF

RX

GAIN2

RX

GAIN1

RX

GAIN0

CR3

011

R/W

Side Tone

GAIN2

Side Tone

GAIN1

Side Tone

GAIN0

TONE

ON/OFF

TONE

GAIN3

TONE

GAIN2

TONE

GAIN1

TONE

GAIN0

CR4

100

R/W

DTMF/

OTHERS

SEL

TONE

SEND

SAO/

VFRO

TONE4

TONE3

TONE2

TONE1

TONE0

CR5

101

R/W

————————

CR6

110

R/W

VOX

ON/OFF

ON

LVL1

ON

LVL0

OFF

TIME

VOX

IN

RX NOISE

LEVEL SEL

RX NOISE

LVL1

RX NOISE

LVL0

CR7

111

R

VOX

OUT

TX NOISE

LVL1

TX NOISE

LVL0

—————

——