25.4.5.1 Combinatorial Logic
The combinatorial functions (MODE[2:0] = 010
, 001
,
000
) build on the AND/OR logic of the input gate. The four-input
AND can provide an OR function by inverting the inputs and outputs using DeMorgan’s
theorem. Inverting the output of the XOR is the same as inverting one input (but not
both).
The SR function (MODE[2:0] = 011
) is not affected when ON (CLCxCON[15])
is cleared, as is the case with the State Logic register. The latch is Reset-dominant,
meaning that the Reset signal takes precedent over any Set signal that may be
present.