WM8961
Pre-Production
REGISTER
ADDRESS
BIT
LABEL
DEFAULT
DESCRIPTION
Speaker PGA volume update
R41 (29h)
ROUT2
volume
8
7
SPKVU
SPKRZC
0
0
Right speaker PGA zero cross enable
Right Speaker output PGA gain, 1dB steps
6:0
SPKRVOL[6:0]
000_0000
0000000 to 0101111 : Mute
0110000 : -73dB
…
1111001 : 0dB
…
1111111 : +6dB
Register 29h ROUT2 volume
REGISTER
ADDRESS
BIT
1
LABEL
DEFAULT
DESCRIPTION
R47 (2Fh)
Pwr Mgmt (3)
TEMP_SHUT
TEMP_WARN
0
0
Read only status of temperature sensor
triggers at 145 degrees C
Read only status of temperature sensor – triggers at 125 degrees C
0
Register 2Fh Pwr Mgmt (3)
REGISTER
ADDRESS
BIT
LABEL
DEFAULT
DESCRIPTION
R48 (30h)
Additional
1
0
TSENSEN
MBSEL
1
1
Enable overheat temp sensor
0: MICBIAS = 5/6 AVDD
1: MICBIAS = 7/6 AVDD
Control (4)
Register 30h Additional Control (4)
REGISTER
ADDRESS
BIT
LABEL
DEFAULT
DESCRIPTION
Right channel class D enable
Left channel Class D enable
R49 (31h)
Class D
7
6
SPKR_ENA
SPKL_ENA
0
0
Control 1
Register 31h Class D Control 1
REGISTER
ADDRESS
BIT
LABEL
CLASSD_ACGAIN[2:0]
DEFAULT
011
DESCRIPTION
AC speaker boost (Boosts speaker AC output signal on both left
and right channels)
R51 (33h)
Class D
2:0
000 – 1.00 x boost (+0dB)
Control 2
001 – 1.19 x boost (+1.5dB)
010 – 1.41 x boost (+3dB)
011 – 1.68 x boost (+4.5B)
100 – 2.00 x boost (+6B)
101 – 2.37 x boost (+7.5dB)
110 – 2.81 x boost (+9dB)
111 – 3.98 x boost (+12dB)
Note that +12dB setting will cause a full scale output signal to clip.
Register 33h Class D Control 2
PP, August 2009, Rev 3.1
w
94
WOLFSON [ WOLFSON MICROELECTRONICS PLC ]
