Question
What is the maximum number of PDM digital microphones that can be handled with the SAI interface? What will be the best way to interface with around 20 PDM microphones?
Hello, if I understand correctly from the document (https://www.st.com/resource/en/application_note/an5027-interfacing-pdm-digital-microphones-using-stm32-mcus-and-mpus-stmicroelectronics.pdf), the SAI interface can only handle at most 8 PDM digital microphones. In this case, what will be the best way to deal with more than 8 PDM microphones? Thank you in advance!