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¡ Semiconductor

MSM7580

PAD/MUTE Processing Timing

78.125

ms

121.09

ms

78.125

ms

Internal 12dBPAD Processing Timing

Internal MUTE Processing Timing

78.125

ms

BCLKA

SYNCA

SIA

MSB

LSB

PAD Mode; MUTE1 and MUTE 2 Timings

PAD/MUTE="H"

SYNCP

MUTE1, 2

BCLKP

SOP





















0dB transmit data

12dB loss transmit data

MSB

LSB

0dB transmit data

MUTE Mode; MUTE1 and MUTE 2 Timings

PAD/MUTE="L"

SYNCP

MUTE1, 2

BCLKP

SOP





















0dB transmit data

MUTE (idle channel state)

MSB

LSB

0dB transmit data

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.