I'm currently designing a board around LPC1765. I use a PDM microphone and I would like to interface it directly to the MCU. I saw few example with differents methods :
SPI in master mode : PDM in another 8-pin CPU | Words from Cheshire Engineering Corp.
SPI in slave mode : https://community.nxp.com/message/766857?commentID=766857#comment-766857
I2S interface (see attached doc)
First question : is it possible to interface PDM signal with LPC MCU ?
Second : is there any best solution between SPI master / slave and I2S ?
Thank you in advance