16bit PDM data capture with MCUExpresso SDK 2.11.0

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16bit PDM data capture with MCUExpresso SDK 2.11.0

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yfliu
Contributor IV

Dear support,

t seems that the MCUExpresso SDK defines data width for 24bit and 32bit when FSL_FEATURE_PDM_FIFO_WIDTH is set as (4), this is the case in my MIMXRT1176_cm7_features.h.

How can we do 16bit data capture via PDM driver on RT1170-EVK board? Do we have to capture in 24bit and then convert the data to 16bit later?

Actually I am confused by the [RT1170 processor reference manual] on PDM data width: section 54.1.5 says 16-bit output while section 56.2.2 says 24-bit output. 

Regards,

Yanfeng

 

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yfliu
Contributor IV

will close this due to duplication with this new one 

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yfliu
Contributor IV

will close this due to duplication with this new one 

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