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Altera_Forum
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9 years ago

ALTDDIO_OUT primitive usage internally

Hi, I am using the Output DDR interface in one of my submodules in the hierarchy. I see that the output register is not set in spite of me selecting the option "Registers powerup high". Also, ...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
9 years ago

If it works, that's great. Note that some devices don't actually have DDIO, so when you put this down it gets done in logic, so maybe that's what is occurring. If it doesn't error out and synthesizes to something functionally wrong, then it's a problem, but if it works inside, great.