WM8959
Pre-Production
OUTPUT MIXER CONTROL
The Output Mixer volume controls are described in Table 24 for the Left Channel and Table 25 for
the Right Channel. The gain of each of analogue input paths may be controlled independently in the
range described in Table 26. The DAC input levels may be controlled by the DAC digital volume
control - see “Digital to Analogue Converter (DAC)” for further details of this control.
REGISTER
ADDRESS
BIT
LABEL
LRI3LO
DEFAULT
DESCRIPTION
R45 (2Dh)
5
0b
RIN3 to LOMIX Mute
0 = Mute
1 = Un-mute
R45 (2Dh)
4
LLI3LO
0b
LIN3 to LOMIX Mute
0 = Mute
1 = Un-mute
R49 (31h)
R47 (2Fh)
R45 (2Dh)
8:6
8:6
2
LRI3LOVOL
[2:0]
000b
000b
0b
RIN3 to LOMIX Volume
(See Table 26 for Volume Range)
LIN3 to LOMIX Volume
(See Table 26 for Volume Range)
LIN12 PGA Output to LOMIX Mute
0 = Mute
LLI3LOVOL
[2:0]
LL12LO
1 = Un-mute
R47 (2Fh)
R45 (2Dh)
2:0
3
LL12LOVOL
[2:0]
000b
0
LIN12 PGA Output to LOMIX Volume
(See Table 26 for Volume Range)
RIN12 PGA Output to LOMIX Mute
0 = Mute
LR12LO
1 = Un-mute
R47 (2Fh)
R45 (2Dh)
5:3
7
LR12LOVOL
[2:0]
000b
0b
RIN12 PGA Output to LOMIX Volume
(See Table 26 for Volume Range)
AINRMUX Output to LOMIX Mute
0 = Mute
LRBLO
1 = Un-mute
R49 (31h)
R45 (2Dh)
5:3
6
LRBLOVOL
[2:0]
000b
0b
AINRMUX Output to LOMIX Volume
(See Table 26 for Volume Range)
AINLMUX Output to LOMIX Mute
0 = Mute
LLBLO
1 = Un-mute
R49 (31h)
R45 (2Dh)
2:0
0
LLBLOVOL
[2:0]
000b
0b
AINLMUX Output to LOMIX Volume
(See Table 26 for Volume Range)
Left DAC to LOMIX Mute
0 = Mute
LDLO
1 = Un-mute
Note: LDLO must be muted when
LDSPK=1
Table 24 Left Output Mixer (LOMIX) Volume Control
PP, May 2008, Rev 3.1
58
w
WOLFSON [ WOLFSON MICROELECTRONICS PLC ]
