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MSM7708-02

Serial Register Interface ADPCM CODEC for Telephone Recording

Oki Electric Industry 

¡ Semiconductor

MSM7708-02

(Register Controllers)

DIO

This I/O pin is used to output the write data and fetch the read data.

Connect this pin to the DIN and DOUT pins of the serial register and to the DOUT pin of the serial

voice ROM.

WE

This output pin is used to select the read or write mode.

Connect this pin to the WE pin of the serial register.

SAD

This pin is used to output the read/write start address data.

Connect this pin to the SAD pin of the serial register and to the SADX pin of the serial voice ROM.

SAS

This clock output pin is used to write the serial address.

Connect this pin to the SAS pin of the serial register and to the SASX and SASY pins of the serial

voice ROM.

TAS

This output pin is used to set the serial address input from the SAD pin into the address counter

inside the serial register/serial voice ROM.

Connect this pin to the TAS pin of the serial register/serial voice ROM.

RWCK

This clock output pin is used to write or read data to or from the serial register.

Connect this pin to the RWCK pin of the serial register and to the RDCK pin of the serial voice

ROM.

CS1, CS2

CS1 and CS2 are chip select pins.

Connect CS1 to the CS pin of the serial register, and CS2 to the CS pin of the serial voice ROM.

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