msm7580 Oki Semiconductor, msm7580 Datasheet - Page 10

• Manufacturer Part Number: msm7580
• Description: Itu-t G.721 Adpcm Transcoder
• Manufacturer: Oki Semiconductor

MUTE1, 2
SYNCP
BCLKP
SOP
SYNCA
BCLKA
SIA
PAD/MUTE Processing Timing
PAD Mode; MUTE1 and MUTE 2 Timings
MUTE1, 2
SYNCP
BCLKP
SOP
MUTE Mode; MUTE1 and MUTE 2 Timings
¡ Semiconductor
As mentioned above, PAD and MUTE processings are carried out according to the rising edge
of SYNCA.
Even if BCLK is not 128 kHz, these processings are performed in the absolute time counted from
the rising edge of SYNCA.
Therefore, MUTE1 and MUTE 2 pins must be controlled so as to cover there processsings.
Internal 12dBPAD Processing Timing
Internal MUTE Processing Timing
78.125ms
121.09ms
MSB
MSB
MSB
0dB transmit data
0dB transmit data
LSB
78.125ms
          
          
LSB
LSB
78.125ms
MUTE (idle channel state)
12dB loss transmit data
PAD/MUTE="H"
PAD/MUTE="L"
0dB transmit data
0dB transmit data
MSM7580
10