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NRF52 PDM Frequency Calculation

Hi,

I am evaluating if it is possible to use the nRF52840 PDM peripheral with a low-power microphone and I need a different CLK frequency setting than what is documented. I am aware that frequencies outside of the ones defined in the Product Specification document have not been tested, but I am willing to evaluate the system performance outside those conditions.

For this end, I want to know the formula for calculating the CLK frequency, since the value provided in the Product Specification don't seem to bear a direct relationship with the generated signal frequency.

Regards,

Guilherme

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