Production Data
WM8580
DMUTE(2:0)
MUTEALL
DACPD(2:0)
PL(3:0)
DZFM (2:0)
DAC_SRC[1:0] = 00
S/PDIF Rx Data
MUTE
(register)
Decode
PCM_N or
AUDIO_N = 1
MPDENB
MUTE
(pin)
DZFM
Selector
Channel 1
Softmute
Channel 2
Softmute
Channel 3
Softmute
zflag1
zflag2
DAC1 i/p
1024
Zeros
Detect
3
zflag
DAC2 i/p
DAC3 i/p
DAC_SRC[1:0] = 00
S/PDIF Rx Data
UNLOCK = 1
Channel 1
Analogue
Mute
Channel 2
Analogue
Mute
Channel 3
Analogue
Mute
Decode
(register)
Volume
IZD
LDAx/RDAx
(Digital volume)
Figure 24 Mute Mode Block Diagram
Note: The above block diagram shows the operation of the various mute functions.
PD Rev 4.3 August 2007
37
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