How to set the register PDMCLKCTRL of nRF52810https://devzone.nordicsemi.com/f/nordic-q-a/24580/how-to-set-the-register-pdmclkctrl-of-nrf52810If I want to get 16kHz output sample rate of PDM,then what should I do? How to cofigure the register PDMCLKCTRL and the clock HFCLK? Could you give me more details? An example may be better.en-USTelligent Community 13Wed, 23 Aug 2017 09:03:31 GMTRE: How to set the register PDMCLKCTRL of nRF52810https://devzone.nordicsemi.com/thread/96767?ContentTypeID=1Wed, 23 Aug 2017 09:03:31 GMT137ad170-7792-4731-bb38-c0d22fbe4515:d0d1f61a-2626-4803-af81-45e1fc2ee4a5J&#248;rn<p>Hello</p> <p>Unfortunately we do not have an example for the PDM module.</p> <p>The PDMCLKCTRL should be set so that the PDM generates a clock, which is acceptable for the peripheral hardware you need to receive a PDM signal from.</p> <p>As an example, if the microphone in question is a <a href="https://www.invensense.com/wp-content/uploads/2015/02/INMP621.pdf">invensense INMP621</a>, it accepts clock signals from 1MHz to 3.6MHz. So in this case any of the three clock speeds listed in the nRF52810 should work nicely.</p> <p>The microphone will then generate a PDM signal whose sampling rate corresponds to the clock chosen, and the PDM module of the nRF52810 will convert this signal to a signal with 15.625kHz, 16.125kHz or 16.672kHz sampling rate depending on which of the three clocks you chose.</p> <p>Best regards</p> <p>Jørn Frøysa</p><div style="clear:both;"></div>