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Altera_Forum
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17 years ago

Cyclone III StarterKit EP3C25F324C6 DDR-Problem

Hi everyone, i have a problem with a small example configuration of a Nios II System using DDR. I use quartus 8.1 full license. I get fitting errors which tell me the following: -----------------...
Altera_Forum's avatar
Altera_Forum
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13 years ago

I was struggling with the same issue, and finally can confirm that adding OUTPUT_ENABLE_GROUP constraint to combine all DDR_DQ/DDR_DM/DDR_DQS lines can fix it.

Thanks to MAX232 for posting this solution.