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Clear Difference between DFSDM and SAI

Associate II

In our previous design we were using DFSDM to read the microphone data, but with the STM32WB family there is only SAI PDM port. I read that the SAI consume more power than the DFSDM because it is processing PDM to PCM.

I found also that the DFSDM is more light than the SAI with the acoustic beamforming

I am looking for a clear information about the main difference between these two protocol of communication in matter of CPU resources, computing, performance and power consumption.