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Altera_Forum
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16 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
16 years ago

Which FPGA family are you using? I've done a few Stratix II designs running at 333MHz. I've never pushed them to 400MHz. I expect the Stratix III and IV controllers can perform at 400MHz because of the per-pin deskew in those parts. In fact now that I think about it, I believe the FAE told me that in Stratix III and Stratix IV, they don't make use of the per-pin deskew unless running over 333MHz.

Jake