JAJSSO5 December 2023 PCM5140-Q1
ADVANCE INFORMATION
This register is the bias and ADC configuration register.
7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
Reserved | MBIAS_VAL[2:0] | Reserved | ADC_FSCALE[1:0] | ||||
R-0h | R/W-0h | R-0h | R/W-0h |
Bit | Field | Type | Reset | Description |
---|---|---|---|---|
7 | Reserved | R | 0h | Reserved |
6-4 | MBIAS_VAL[2:0] | R/W | 0h | MICBIAS value. 0d = Microphone bias is set to VREF (2.750 V, 2.500 V, or 1.375 V) 1d = Microphone bias is set to VREF × 1.096 (3.014 V, 2.740 V, or 1.507 V) 2d to 5d = Reserved 6d = Microphone bias is set to AVDD |
3-2 | Reserved | R | 0h | Reserved |
1-0 | ADC_FSCALE[1:0] | R/W | 0h | ADC full-scale setting (configure this setting based on the AVDD supply minimum voltage used). 0d = VREF is set to 2.75 V to support 2 VRMS for the differential input or 1 VRMS for the single-ended input 1d = VREF is set to 2.5 V to support 1.818 VRMS for the differential input or 0.909 VRMS for the single-ended input 2d = VREF is set to 1.375 V to support 1 VRMS for the differential input or 0.5 VRMS for the single-ended input 3d = Reserved |