Interfacing MP34DT06 with STM32F401RE Sensor

[AmitUpadhyay]

Hi,

I’m using the NUCLEO-STM32F401RE with the X-NUCLEO-CCA02M2 board, which has two MP34DT06 PDM microphones. 

I want to capture stereo audio using I2S2 and convert it to PCM using the PDM2PCM middleware in STM32CubeIDE.

In AN5027 (page 18), a timer is used for stereo mode. This confuses me — since I2S2 can generate the clock and receive data, is the timer still needed to capture stereo PDM signals?

I’m new to this domain, so any guidance is appreciated.

Thanks!