CXD1199AQ
3-1-13. ADPCTL (ADPCM control) register
bit 5 : CHNGATV (change ATV register)
The host sets this bit high after the changes of the ATV 3 to 0 registers have been completed. The
attenuator value in the IC is switched for the first time. There is no need for the host to set this bit
low. The bit used to set the ATV3 to 0 registers of the host and to synchronize the IC audio
playback.
bit 0
ADPMUTE (ADPCM mute)
Set high to mute the ADPCM sound for ADPCM decoding.
bits 7, 6, 4 to 1: Reserved
Apart from ATV 2 and 0, all the write registers are initialized to 00HEX when reset (either hard or soft reset).
The ATV 2 and 0 registers are initialized to 80HEX when reset.
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