MSM7590L-01 데이터 시트보기 (PDF) - Oki Electric Industry

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MSM7590L-01

Multi-Function ADPCM CODEC

Oki Electric Industry 

¡ Semiconductor

MSM7590L-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 and 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 range of 64 kHz to 2048 kHz.

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