Keywords: FSL, processor IP, fsl_v20_v2_00_a, size
There is no advantage to setting the FIFO depth <16 because the same number of LUTs are used for FIFO less than 16. The documentation and MPD will be fixed to only allow the following sizes:
RANGE = (0,16:C_ASYNC_CLKS*128 | !C_ASYNC_CLKS*8192)