Analog Devices ADAU1961 Manual page 58

ADAU1961
R21: Right Input Digital Volume, 16,411 (0x401B)
Bit 7 Bit 6
Table 46. Right Input Digital Volume Register
Bits Bit Name
[7:0] RADVOL[7:0]
R22: Playback Mixer Left (Mixer 3) Control 0, 16,412 (0x401C)
Bit 7 Bit 6
Reserved MX3RM
Table 47. Playback Mixer Left (Mixer 3) Control 0 Register
Bits Bit Name
6 MX3RM
5 MX3LM
[4:1] MX3AUXG[3:0]
0 MX3EN
Downloaded from Elcodis.com electronic components distributor
Bit 5 Bit 4
Description
Controls the digital volume attenuation for right channel inputs from either the right ADC or the right digital
microphone input. Each bit corresponds to a 0.375 dB step with slewing between settings. See Table 71 for a
complete list of the volume settings.
Setting
00000000
00000001
00000010
...
11111110
11111111
Bit 5 Bit 4
MX3LM
Description
Mixer input mute. Mutes the right DAC input to the left channel playback mixer (Mixer 3).
0 = muted (default).
1 = unmuted.
Mixer input mute. Mutes the left DAC input to the left channel playback mixer (Mixer 3).
0 = muted (default).
1 = unmuted.
Mixer input gain. Controls the left channel auxiliary input gain to the left channel playback mixer (Mixer 3).
Setting
0000
0001
0010
0011
0100
0101
0110
0111
1000
Mixer 3 enable.
0 = disabled (default).
1 = enabled.
Bit 3 Bit 2
RADVOL[7:0]
Volume Attenuation
0 dB (default)
−0.375 dB
−0.75 dB
...
−95.25 dB
−95.625 dB
Bit 3 Bit 2
MX3AUXG[3:0]
Gain
Mute (default)
−15 dB
−12 dB
−9 dB
−6 dB
−3 dB
0 dB
3 dB
6 dB
Rev. 0 | Page 58 of 76
Bit 1 Bit 0
Bit 1 Bit 0
MX3EN