User Manual

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.
76543210
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