Just wondering if it's possible to use the sign-extend feature of the SPORT to extend incoming
16-bit data to 32-bits on the Blackfin 527?
The documentation on the sign-extend mode is a little
sparse and I can't figure out how to set it up. I would also like to use DMA
to transfer this data. When I set DMA up to do a 32-bit transfer with sign-extend
turned on, the SPORT seems to just send 2 16-bit words of received data
instead of one sign-extended word.