PDM Microphone Interface
experimentalA PDM MEMS microphone interface (PDM to PCM) for FPGAs.
lfpga add pdm-mic
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Last checked 2026-07-05 by the LibFPGA toolchain.
[](https://libfpga.com/cores/pdm-mic)
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About
A clean reference for interfacing a PDM MEMS microphone to an FPGA: generate the mic clock, capture the 1-bit pulse-density stream, and decimate it to PCM with a CIC filter. A compact, readable starting point for adding microphone input to a design. Note: licensing is per-file, check the headers before reuse.