Instruction Manual

DS882F1 97
CS42L73
6.18 ADC/Input Path Control (Address 14h)
6.18.1 PGA x Input Select
Selects the specified analog input signal into channel x’s PGA.
Note: For pseudodifferential inputs, the CODEC automatically chooses the respective pseudoground
(LINEIN_REF or MIC1_REF, LINEIN_REF or MIC2_REF) for each input selection.
6.18.2 Boost x
Configures a +20 dB digital boost on channel x.
6.18.3 Invert ADCx Signal Polarity
Configures the polarity of the ADC channel x signal.
6.18.4 Input Path x Digital Mute
Configures a digital mute on the volume control for Input Path channel x, overriding the Input Path digital
volume setting (IPxDVOL) and the associated ALC volume control.
76543210
PGABMUX BOOSTB INV_ADCB IPBMUTE PGAAMUX BOOSTA INV_ADCA IPAMUTE
PGAxMUX Selected Input to PGAA/PGAB
0 LINEINA/LINEINB
1MIC1/MIC2
BOOSTx +20 dB Digital Boost
0 No boost applied
1 +20 dB boost applied
INV_ADCx ADCx Signal Polarity
0 Not Inverted
1 Inverted
IPxMUTE Input Path Mute
0 Not muted
1 Muted