SBASA14 May 2020 PCMD3180
PRODUCTION DATA.
This register is the MICBIAS and VREF configuration register
7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
Reserved | MBIAS_VAL[2:0] | Reserved | VREF_SEL[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 to 5d = Reserved 2d = Reserved 6d = Microphone bias is set to AVDD 7d = Reserved |
3-2 | Reserved | R | 0h | Reserved |
1-0 | VREF_SEL[1:0] | R/W | 0h | VREF voltage setting (configure this setting based on the AVDD supply minimum voltage used).
0d = VREF is set to 2.75 V 1d = VREF is set to 2.5 V 2d = VREF is set to 1.375 V (this option must be used for 1.8 V AVDD) 3d = Reserved |