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Altera_Forum's avatar
Altera_Forum
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14 years ago

Modifying ddr controller parameters

I have designed a new pcb with a cyclone iii and a ddr memory. I have not respected the track lengths. Anyone knows how to modify ddr controller parameters in order to fit a more relaxable design? (n...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
14 years ago

I have found how to modify the drive strength (drive strength reduced) in the ddr controller and now the program checks 131072 bytes, but the test continues failing. About the dynamic termination scheme I have read that it's impossible to apply with a ddr memory (but it's possible for ddr2 and ddr3). In this line, any idea of how can I continue improbing the signal integrity?