Simple output buffers are inverting
msinger opened this issue · 0 comments
msinger commented
By simple I mean the output buffers that only have one connection. These are:
SOUT
gets inverted byKENA
on page 5. It must be inverted at the output buffer, so signalSOUT
should be marked as inverted (with a line on top of the label).!CS_OUT
on page 8 is marked as inverted, but it shouldn't be, because the externalCS
pin is actually active-low. The output buffer is inverting, so the!CS_OUT
signal is active-high and shouldn't have a line on it.PHI_OUT
on page 1 should also be marked as inverted, because the output buffer forPHI
is inverting. All the signals in the schematic that have PHI in their name should be changed as a consequence. The signal that is currently called!PHI_OUT
maybe should be calledUVYT_PHI
, or at least something without the _OUT suffix, because this may be confusing, which one of those signals actually goes to the output pin. There's also!PHI
on page 1 that comes out ofDOVA
andMOPA_PHI
on page 4.MA0_OUT
-MA12_OUT
are all inverted. Also the internal bus ofMA0
-MA12
is inverted too. This can be seen on page 25, where the inverting tri-state buffersXECA
,XYBO
, ... are drivingA0
-A12
ontoMA0
-MA12
.