WM8985
Pre-Production
REGISTER
ADDRESS
BIT
LABEL
DEFAULT
000
DESCRIPTION
REFER TO
4:2
BYPRMIXVOL
Right bypass volume control to output channel
mixer:
Analogue
Outputs
000 = -15dB
001 = -12dB
…
101 = 0dB
110 = +3dB
111 = +6dB
1
0
BYPR2RMIX
DACR2RMIX
0
1
Right bypass path (from the right channel input
boost output) to right output mixer
Analogue
Outputs
0 = not selected
1 = selected
Right DAC output to right output mixer
0 = not selected
Analogue
Outputs
1 = selected
52 (34h)
53 (35h)
54 (36h)
8
7
OUT1VU
N/A
0
LOUT1 and ROUT1 volumes do not update until
a 1 is written to OUT1VU (in reg 52 or 53)
Analogue
Outputs
LOUT1ZC
Headphone volume zero cross enable:
1 = Change gain on zero cross only
0 = Change gain immediately
Left headphone output mute:
0 = Normal operation
1 = Mute
Analogue
Outputs
6
LOUT1MUTE
LOUT1VOL
0
Analogue
Outputs
5:0
111001
Left headphone output volume:
000000 = -57dB
Analogue
Outputs
...
111001 = 0dB
...
111111 = +6dB
8
7
OUT1VU
N/A
0
LOUT1 and ROUT1 volumes do not update until
a 1 is written to OUT1VU (in reg 52 or 53)
Analogue
Outputs
ROUT1ZC
Headphone volume zero cross enable:
1 = Change gain on zero cross only
0 = Change gain immediately
Right headphone output mute:
0 = Normal operation
1 = Mute
Analogue
Outputs
6
ROUT1MUTE
ROUT1VOL
0
Analogue
Outputs
5:0
111001
Right headphone output volume:
000000 = -57dB
Analogue
Outputs
...
111001 = 0dB
...
111111 = +6dB
8
7
OUT2VU
N/A
0
LOUT2 and ROUT2 volumes do not update until
a 1 is written to OUT2VU (in reg 54 or 55)
Analogue
Outputs
LOUT2ZC
Speaker volume zero cross enable:
1 = Change gain on zero cross only
0 = Change gain immediately
Left speaker output mute:
0 = Normal operation
Analogue
Outputs
6
LOUT2MUTE
0
Analogue
Outputs
1 = Mute
PP, Rev 3.4, October 2006
106
w
WOLFSON [ WOLFSON MICROELECTRONICS PLC ]
