MSM7708-02 Ver la hoja de datos (PDF) - Oki Electric Industry

Número de pieza

componentes Descripción

Lista de partido

MSM7708-02

Serial Register Interface ADPCM CODEC for Telephone Recording

Oki Electric Industry 

¡ Semiconductor

MSM7708-02

DEN, EXCK, DIN, DOUT

,
, SerialcontrolportsforMCUinterface.

Reading and writing data is performed by an external CPU through these pins. 14-byte control

registers (CR0 - 13) are provided in this device.

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.

Input/output timing is shown in Fig. 3.

DEN

EXCK

DIN

W A3 A2 A1 A0 B7 B6 B5 B4 B3 B2 B1 B0

DOUT

High Impedance

(a) Write Data Timing Diagram

 DEN

EXCK

DIN

DOUT

R A3 A2 A1 A0

High Impedance

B7 B6 B5 B4 B3 B2 B1 B0

(b) Read Data Timing Diagram

Figure 3 MCU Interface Input/Output Timing

MUTE

This pin is used to enable the receive side voice path mute level.

To set the mute level, set this pin to "1".

MLV0, MLV1, MLV2

This pin is used to set the receive side voice path mute level.

For the control method, refer to the control register description (CR1). Since these signals are

ORed with CR1 - B2, B1, and B0 internally, set these register data to "0" when using this pin.

11/38

Share Link: