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Altera_Forum's avatar
Altera_Forum
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15 years ago

Fast Output Enable

I've got 16 bidirectional pins and I want the registers as close as possible to the pad to cut down on any routing delays between the last register and the pad on the output side and the first regist...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
15 years ago

What version of Quartus? I've had very good experience with it replicating registers into the OE(with recent versions of Quartus, but I mean within the last 4 years or so, so it's been working for a while). I usually just do I/O timing constraints and it does the replication for me, although Fase OE Register assignments should work too.

If you've already replicated it though, that definitely should work. What assignment/constraint did you put on to stop that from occurring? Can you show the syntax? (It can be done in HDL or assignments in the .qsf, so a few ways to go about it...)