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Altera_Forum's avatar
Altera_Forum
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9 years ago

ddr bi-directional with different input/output clocks

Greetings, I am wondering what the correct megafunctions/primitives are for implementing input/output dual-data-rate data lines for a DDR memory device. I'm on a Cyclone IV. Here are my require...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
9 years ago

Okay, that seems like the culprit. Unfortunately I don't control the inclock (DQS is driven from external device during reads), so I can't give it another clock. Are there any other options for making this scheme work? Sure someone has interfaced with a DDR memory controller?