I am connecting the AKU242 straight to our microprocessor. It is a PDM interface so it has a SELECT, DATA, CLOCK, VDD and 5 GND signals. On the datasheet, there are two identical PDM microphones with one SELECT connected to GND and another SELECT connected to VDD.
- However, we have only ONE PDM microphone on our system. Any recommendation on how to connect the SELECT of the microphone?
- Do we need any resistors (~50 Ohms) on the DATA/CLK lines on microphone to PDM-DATA/PDM-CLK on nordic?