MSM6895 データシートの表示（PDF） - Oki Electric Industry

部品番号

コンポーネント説明

メーカー

MSM6895

Multi-Function PCM CODEC

Oki Electric Industry 

¡ Semiconductor

MSM6895/6896

PO0, PO1, PO2, PO3, PO4, PO5, PO6, PO7

Key scanning outputs.

These output pins need external pull-up resistors because of their open- drain circuits. Through

processor control, these outputs can be set open or to digital "0". Initially, these outputs are set

at an opened state.

PI0, PI1, PI2, PI3, PI4, PI5, PI6, PI7

Key scanning inputs.

In the READ mode, data on PI0 to PI7 can be read out of the processor via data bus (DB0 to DB7).

INTT

Interrupt signal output to the processor.

INTT outputs interrupt signals (digital "0") at intervals of 8 ms by the interrupt release control

signal from the processor. INTT does not output any signal while no CK8 signal is input.

Interrupt release signal

from processor

t < 8 ms

8 ms < t < 16 ms

t < 8 ms

INTT output

8 ms

16 ms

8 ms

DB0, DB1, DB2, DB3, DB4, DB5, DB6, DB7

Data bus inputs and outputs.

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