Mic Interface Options on STM32H757I-EVAL

[priya_12]

Can the STM32H757I-EVAL board accept microphone output in formats other than DFSDM or PDM? 

[AScha.3]

You can use any free (!) I2S or SAI input, to connect an I2S mic.

[priya_12]

Thanks, how many external microphones can the board support? Is there any way that I can interface other microphones apart from st microphone in the board?

[AScha.3]

See circuit of eval board :

https://www.st.com/resource/en/schematic_pack/mb1246-h757-e02_schematic.pdf

Which pins on H757 are free and on which pins you can set I2S or SAI (in I2S mode) you can see....

respectively puzzle together from ds , pins, and circuit, whats free and on a header.

Or use Cube, to show what I2S or SAI are still free, to use by your new mic I2S .