Product Preview
WM8581
w
PP Rev 1.0 March 2006
79
REGISTER
ADDRESS
BIT LABEL DEFAULT
DESCRIPTION
PL[3:0]
Left O/P
Right O/P
0000 Mute
Mute
0001 Left
Mute
0010 Right
Mute
0011 (L+R)/2
Mute
0100 Mute
Left
0101 Left
Left
0110 Right
Left
0111 (L+R)/2
Left
1000 Mute
Right
1001 Left
Right
1010 Right
Right
1011 (L+R)/2
Right
1100 Mute
(L+R)/2
1101 Left
(L+R)/2
1110 Right
(L+R)/2
3:0 PL[3:0]
1001
1111 (L+R)/2
(L+R)/2
6:4
DZFM[2:0]
000
Selects the source for ZFLAG
000 - All DACs Zero Flag
001 - DAC1 Zero Flag
010 - DAC2 Zero Flag
011 - DAC3 Zero Flag
100 - DAC4 Zero Flag
101 - ZFLAG = 0
110 - ZFLAG = 0
111 - ZFLAG = 0
R16
DAC
CONTROL
2
10h
7
IZD
0
Infinite zero detection circuit control and automute control
0 = Infinite zero detect automute disabled
1 = Infinite zero detect automute enabled
3:0 DEEMP[3:0]
0000 De-emphasis mode select
DEEMP[0] = 1, enable De-emphasis on DAC1
DEEMP[1] = 1, enable De-emphasis on DAC2
DEEMP[2] = 1, enable De-emphasis on DAC3
DEEMP[3] = 1, enable De-emphasis on DAC 4
R17
DAC
CONTROL
3
11h
4 DEEMPALL
0
0 = De-emphasis controlled by DEEMP[3:0]
1 = De-emphasis enabled on all DACs
R18
DAC
CONTROL
4
12h
5:0 PHASE
[7:0] 11111111
Controls phase of DAC outputs
PHASE[0] = 1 inverts phase of DAC1L output
PHASE[1] = 1 inverts phase of DAC1R output
PHASE[2] = 1 inverts phase of DAC2L output
PHASE[3] = 1 inverts phase of DAC2R output
PHASE[4] = 1 inverts phase of DAC3L output
PHASE[5] = 1 inverts phase of DAC3R output
PHASE[6] = 1 inverts phase of DAC4L output
PHASE[7] = 1 inverts phase of DAC4R output
R19
DAC
CONTROL
5
13h
2:0
DMUTE[3:0]
0000
DAC channel soft mute enables
DMUTE[0] = 1, enable soft-mute on DAC1
DMUTE[1] = 1, enable soft-mute on DAC2
DMUTE[2] = 1, enable soft-mute on DAC3
DMUTE[3] = 1, enable soft-mute on DAC4