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Forum Post: RE: Unable to configure McBSP FIFO depth

Hi Mukul,

I am having problem with EDMA3/McBSP(with FIFO enable) doing 32 channel(TDM) for 32 bit words transfer.   My code works with 8 channels.

Reading from your post: "If you change the WNUMEVT value then you would need to change the EDMA driver to make sure that the ACNT x BCNT is equal to the number of words/bytes expected every trigger event."    For 32 channels of 32 bits (4 bytes),  I would need to set WNUMEVT = 128 (32 X 4).  But McBSP FIFO is only 64 deep.

I have been working on this issue in E2E here:

http://e2e.ti.com/support/dsp/c6000_multi-core_dsps/f/639/p/312470/1158330.aspx#1158330

What can we do?

Thank you.

Regards,

Steve


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