MSM7581 Ver la hoja de datos (PDF) - Oki Electric Industry

Número de pieza

componentes Descripción

Lista de partido

MSM7581

ITU-T G.721 4ch ADPCM TRANSCODER

Oki Electric Industry 

¡ Semiconductor

PAD Processing Timing

SYXA

BCKA

SIA

MSB

LSB

78.125ms

Internal 12dBPAD processing Timing

121.09ms

Internal MUTE processing Timing

78.125ms

78.125ms

MSM7581

PAD10 to PAD40, PAD11 to PAD41 Timings

SYXP

PAD10, 11

ts

th

ts=100ns or more

th=100ns or more

 Internal PAD

Signal

BCKP

SOP

MSB

LSB

0dB transmit data

PAD processing transmit data

0dB transmit data

As mentioned above, PAD and MUTE processings are performed according to the rising edge

of SYXA. Even if BLOCK is not 128 kHz, these processings are performed in the absolute time

counted from the rising edge of SYXA.

The PAD pin must be controlled so as to cover these processings.

The PAD signal is input in the device at the rising edge of SYXP. Therefore, the PAD signal should

be input at ts and th for the rise of SYXP.

11/18

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