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Altera_Forum
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17 years ago

SOPC HP DDR2 Controller Clock Rate

I've installed a HP DDR2 Controller in the SOPC Builder. I'm curious what clock rate I can run this at. My memory can run at 400MHz CL = 3, 533MHz at CL = 4 and 667MHz at CL = 5. I'm running the c...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
17 years ago

Thanks Jake. I'm using a Stratix III. -3 speed grade.

I've been running at 330MHz due to what AN-435 said and then I saw the 400MHz in the Users Guide. Yesterday I bumped it up to 340MHz and it seemed to work. I'll ask my FAE when I get a chance but also I'm going to keep bumping it up and see how it goes.