IMX8MM - digital mic PDM input

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IMX8MM - digital mic PDM input

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shai_b
Senior Contributor II

Dear team,

My customer has the following inquiry about PDM interface on IMX8MM, They need to connect a microphone that outputs PDM. They think they need to change the MCLK & DATA to one the SAI5 inputs, can you advise if this the correct way to interface with MIC.

for the MIC datasheet please refer https://www.mouser.co.il/datasheet/2/218/knowles_corporation_know-s-a0002305576-1-1736216.pdf  

Please find attached pic how they plan to connect it and advise us back.

Thanks in advance 

Kind regards,

shai.b@telsys.co.il

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igorpadykov
NXP Employee
NXP Employee

Hi Shai

I believe connections on picture are correct, note "SAI5 inputs"

are just pads name, input should be provided to pdm module,

for example PDM_CLK is muxed on SAI5_RXC pad.

Best regards
igor
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