0-7h FIFO Width. Applies if either SAM or DAM is set to constant addressing mode.
0 FIFO width is 8-bit.
1h FIFO width is 16-bit.
2h FIFO width is 32-bit.
3h FIFO width is 64-bit.
4h FIFO width is 128-bit.
5h FIFO width is 256-bit.
6h-7h Reserved. Always write 0 to this bit; writes of 1 to this bit are not supported and attempts to do so may
result in undefined behavior
What is a width of 256 bits? Does that mean the fifo can only be 32 bytes long before it wraps?