I am in the midst of layout and having a hard time getting all the parts to fit on the board. I want to make changes and I am not sure how it will affect the performance of the codec. I have attached my schematic for reference.
1. The Port 1 and Port 2 I2S signals are connected to a processor with IO pins at +3.3V. I have the codec IO_VDD connected to +1.8V. Should IO_VDD be connected to +3.3V or is +1.8V sufficient.
2. If +1.8V is sufficient can I use a single 0.1uF and a single 1.0uF for both pins;IO_Vdd and D_Vdd?
3. I am using the Left Mic and the right Mic in single ended mode and I am using two resistors on the Mic bias pin. I am only using the Left or the Right at any given time and not both. Is there a problem with connecting Mic Bias in this manner.
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