Cirrus Logic WM8940 Manual page 79

REGISTER BIT LABEL
ADDRESS
54 (36h) 15:9
8 SPKATTN
7 SPKZC
6 SPKMUTE
5:0 SPKVOL
55 (37h) 15:0
56 (38h) 15:8
7 MONOATTN
6 MONOMUTE
5:3
2 AUX2MONO
1 BYP2MONO
0 DAC2MONO
Rev 4.4
DEFAULT
00h Reserved
0 Attenuation control for bypass path (output of input
boost stage) to speaker mixer input
0 = 0dB
1 = -10dB
0 Speaker Volume control zero cross enable:
1 = Change gain on zero cross only
0 = Change gain immediately
1 Speaker output mute enable
0=Speaker output enabled
1=Speaker output muted (VMIDOP)
111001 Speaker Volume Adjust
111111 = +6dB
111110 = +5dB
... (1.0 dB steps)
111001=0dB
...
000000=-57dB
0000h Reserved
00h Reserved
0 Attenuation control for bypass path (output of input
boost stage) to mono mixer input
0 = 0dB
1 = -10dB
0 MONOOUT Mute Control
0=No mute
1=Output muted. During mute the mono output will
output VMID which can be used as a DC reference for
a headphone out.
0 Reserved
0 Output of Auxiliary amplifier to mono mixer input:
0 = not selected
1 = selected
0 Bypass path (output of input boost stage) to mono
mixer input
0 = non selected
1 = selected
0 Output of DAC to mono mixer input
0 = not selected
1 = selected
DESCRIPTION
WM8940
REFER TO
Analogue Outputs
Analogue Outputs
Analogue Outputs
Analogue Outputs
Analogue Outputs
Analogue Outputs
Analogue Outputs
Analogue Outputs
Analogue Outputs
79