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Altera_Forum
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17 years ago

DDR2 SDRAM: local_init_done not going high

I have built a DDR2 SDRAM v7.2 controlller, v7.2, using the Megawizard and a native interface. I have reviewed my schematic and pinout and it looks to be correct. The local_init_done is not going h...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
17 years ago

If the initial timing calibration fails, init_done won't be asserted. I would rather expect a wiring error than a bad RAM module.