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Altera_Forum
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14 years ago

Can't get DDR2 ALTMEMPHY to work on Cyclone IV E

Greetings. I am having some difficulty getting the Altera DDR2 ALTMEMPHY SDRAM controller to work on my Cyclone4E EP4CE30F23. I have configured the DDR2 controller to run in half-rate mod...
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Altera_Forum
Icon for Honored Contributor rankHonored Contributor
14 years ago

What about the I/O pins with the DDR chip? If they are not constrained they should appear in red in the Timequest report (Unconstrained paths).