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Altera_Forum
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14 years ago

DDR2 pin placement Cyclone 3 HPC II

Trying to meet the (absurdly tight) layout requirements for (32 DQ) DDR2 ram on Cyclone 3. HPC II. The layout engineer keeps trying to move pins (within the x8 DQ groups) and the resulting pin map ...
Altera_Forum's avatar
Altera_Forum
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14 years ago

Not sure. I would look at where the DQ capture registers are placed. Maybe there are too many going into a LAB or something like that?