Commas are aligned to a symbol boundary as long as they are found while comma
alignment is active. Set attribute
RX_MCOMMA_ALIGNEN to 1'b1 to
align on the MCOMMA pattern. Set attribute
RX_PCOMMA_ALIGNEN to 1'b1 to
activate alignment on the PCOMMA pattern. Both
attributes can be set to align to either pattern.
When RX_ALIGN_COMMA_DOUBLE is TRUE, both enable
attributes must always be set to the same
value.