WM8945 Datasheet, PDF (137/169 Pages) Wolfson Microelectronics plc – Mono Low-Power CODEC with Video Buffer and Touch Panel Controller

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