Please let me confirm below.
If we don't use following pins on the system, how should we deal with them ?
- 1. DMIC2_3/MP5 and DMIC0_1/MP4 pins
On the data sheet and reference board, these pins are floating.
When we don’t use these input pin, can we leave them floating ?
I can find following control register. Should we set these pad internal pull-up ?
ADAU1772 data sheet ( rev.C )
Table 99. Bit Descriptions for PAD_CONTROL0
2 MICBIAS0 and MICBIAS pins
These pins are A_OUT, so I think that we can let them floating.
But I can find following control register. Should we set these pins disenable ?
Table 74. Bit Descriptions for MIC_BIAS