Cirrus Logic CS42L56 - Manual (Page 75)

DS851F2 75
CS42L56
6.25 Misc. ADC Control (Address 1Ch)
6.25.1 ADC Channel B=A
Configures independent or ganged volume and mute control of the ADC. When enabled, the channel B
settings are ignored and the channel A settings control channel A and channel B.
6.25.2 PGA Channel B=A
Configures independent or ganged volume control of the PGA. When enabled, the channel B settings are
ignored and the channel A settings control channel A and channel B. Affected register bits include PGAx-
VOL[5:0]
.
6.25.3 Digital Sum
Configures a mix/swap of ADCA and ADCB.
6.25.4 Invert ADC Signal Polarity
Configures the polarity of the ADC signal.
6.25.5 ADC Mute
Configures a digital mute on ADC channel x.
7 6 5 4 3 2 1 0
ADCB=A PGAB=A DIGSUM1 DIGSUM0 INV_ADCB INV_ADCA ADCBMUTE ADCAMUTE
ADCB=A Single Volume Control Affected Volume Controls
0 Disabled; Independent channel control.
ADCxMUTE ( “ADC Mute” on page 76 )
ADCxVOL[6:0] ( “ADCx Volume” on page 78 ) 1
Enabled; Ganged channel control. Channel A volume
control controls channel B volume.
PGAB=A Single Volume Control Affected Volume Controls
0 Disabled; Independent channel control.
PGAxVOL[5:0] ( “PGAx Volume” on page 78 )
1
Enabled; Ganged channel control. Channel A volume
control controls channel B volume.
DIGSUM[1:0]
Serial Output Signal
Left Channel Right Channel
00 ADCA ADCB
01 (ADCA + ADCB)/2 (ADCA + ADCB)/2
10 (ADCA - ADCB)/2 (ADCA - ADCB)/2
11 ADCB ADCA
INV_ADCx ADC Signal Polarity
0 Not Inverted
1 Inverted
ADCxMUTE ADC Mute
0 Not muted.
1 Muted