Production Data
WM8945
REGISTER
ADDRESS
BIT
LABEL
DEFAULT
DESCRIPTION
Speaker PGA Volume Update
REFER TO
R47 (2Fh)
Left SPK
volume ctrl
8
SPK_VU
0
Writing a 1 to this bit will cause the Left and Right
Speaker PGA volumes to be updated simultaneously.
Left Speaker PGA Zero Cross Detector
0 = Change gain immediately
1 = Change gain on zero cross only
Left Speaker PGA Mute
0 = Disable Mute
7
6
SPKL_ZC
0
1
SPKL_PGA_M
UTE
1 = Enable Mute
Left Speaker PGA Volume
00_0000 = -57dB gain
00_0001 = -56dB
5:0
SPKL_VOL
[5:0]
11_1001
…
11_1001 = 0dB
...
11_1111 = +6dB
Register 2Fh Left SPK volume ctrl
REGISTER
ADDRESS
BIT
LABEL
DEFAULT
DESCRIPTION
REFER TO
Speaker PGA Volume Update
R48 (30h)
Right SPK
volume ctrl
8
SPK_VU
0
Writing a 1 to this bit will cause the Left and Right
Speaker PGA volumes to be updated simultaneously.
Right Speaker PGA Zero Cross Detector
0 = Change gain immediately
1 = Change gain on zero cross only
Right Speaker PGA Mute
0 = Disable Mute
7
6
SPKR_ZC
0
1
SPKR_PGA_M
UTE
1 = Enable Mute
Right Speaker PGA Volume
00_0000 = -57dB gain
00_0001 = -56dB
5:0
SPKR_VOL
[5:0]
11_1001
…
11_1001 = 0dB
...
11_1111 = +6dB
Register 30h Right SPK volume ctrl
PD, May 2011, Rev 4.1
137
w
WOLFSON [ WOLFSON MICROELECTRONICS PLC ]
