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Honored Contributor
Honored ContributorStratix III DDR2 HPC&HPC II DQ/DQS/DM without output data problem!!
Environment: Stratix III EP3SL340F1517I3 DDR2 SDRAM: M470T5663QZ(H)3 with 2G size(which has two ranks、64bits datawidth and two clocks) Qu...
Altera_ForumHonored Contributor
Honored Contributor1. HPC should handle multi-rank. You have to first tell it how many overall chip selects, then tell it how many of them are for multiple ranks.
2. You may not be completing calibration. Seems like when you disable the calibration, you see your data, but then the data is likely not properly calibrated to dqs. There is a signal that comes out of the controller called init_done. You can check to see if that is going high or staying low.
