CS42L51_07 Datasheet, PDF (56/88 Pages) Cirrus Logic – Low Power, Stereo CODEC with Headphone Amp

CS42L51
6.7 ADCx Input Select, Invert & Mute (Address 07h)
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AINB_MUX1 AINB_MUX0 AINA_MUX1 AINA_MUX0 INV_ADCB
ADCX Input Select Bits (AINX_MUX[1:0])
Default: 00
2
1
0
INV_ADCA ADCB_MUTE ADCA_MUTE
PDN_PGAx
0
0
0
0
1
1
1
1
AINx_MUX[1:0]
Selected Path to ADC
00
AIN1x-->PGAx
01
AIN2x-->PGAx
10
AIN3x/MICINx-->PGAx
11
AIN3x/MICINx-->Pre-Amp(+16/+32 dB Gain)-->PGAx
00
AIN1x
01
AIN2x
10
AIN3x/MICINx
11
Reserved
Function:
Selects the specified analog input signal into ADCx. The microphone pre-amplifier is only available when
PDN_PGAx is disabled. See Figure 26.
AIN1x
AIN2x
AIN3x / MICINx
MUX
AIN1x
AIN2x
AIN3x
PGA
+16/
32 dB
Decoder
AINx_MUX[1:0]
PDN_PGAx
Figure 26. AIN & PGA Selection
MUX
ADC
ADCX Invert Signal Polarity (INV_ADCX)
Default: 0
0 - Disabled
1 - Enabled
Function:
When enabled, this bit will invert the signal polarity of the ADC x channel.
ADCX Channel Mute (ADCX_MUTE)
Default: 0
0 - Disabled
1 - Enabled
Function:
The output of channel x ADC will mute when enabled. The muting function is affected by the ADCx Soft bit
(SOFT).
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