PDM Interface

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A most interesting board. Eurorack modules are a bit expensive.

It was mentioned on the Pico-Ice Discord channel. The Pico-Ice is an RP2040/2350 + ICE40 UP5k board.

Of course there are no PDM ports on this board. PDM to PCM computation is a bit computationally expensive. For each input channel you have to run a low pass filter at 1-3 Mhz, and then do decimation. Much better to do it on an FPGA.

I wonder if there is any way to add an FPGA for PDM I/O to this board?