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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 upload some captures measured with the oscilloscope in the new pcb. Also I have captured the same signals in the altera development kit. The pictures from the left correspond to a2 in the pcb and a2 in the kit; the two pictures from the right correspong to a0 in the pcb and a0 in the kit.Any idea wich phenomenon is taking place? Many thanks.

ifdm

P.D They have been taken while running mem_test app.