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Altera_Forum
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14 years ago

DDR2 HPCII v11.0 problem, thanks for help !

everything seems well, however, local_init_done is always low, what's wrong? I tried both the full calibration and "skip the calibration", it doesn't change anything, the local_init_done is alway...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
10 years ago

Yes. I stole the schematics from an earlier working design with Cyclone II/DDR2. All timing passed.

I am using ALTMEMPHY, Cyclone IV and DIMM-240 1G (unbuffered)

Calibration does not pass.

Also, I can not find the debug_toolkit for external memory testing. Looks like Altera has removed it. Can you please attach it here, if you have it