msm7581 Oki Semiconductor, msm7581 Datasheet - Page 11

• Manufacturer Part Number: msm7581
• Description: Itu-t G.721 4ch Adpcm Transcoder
• Manufacturer: Oki Semiconductor

SYXP
PAD10, 11
Internal PAD
Signal
BCKP
SOP
PAD Processing Timing
SYXA
BCKA
SIA
PAD10 to PAD40, PAD11 to PAD41 Timings
¡ Semiconductor
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.
Internal 12dBPAD processing Timing
Internal MUTE processing Timing
78.125ms
121.09ms
ts
MSB
MSB
th
ts=100ns or more
th=100ns or more
0dB transmit data
LSB
78.125ms
          
LSB
78.125ms
PAD processing transmit data
0dB transmit data
MSM7581
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