Forum Discussion
Altera_Forum
Honored Contributor
14 years agoDDR2 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
Honored Contributor
11 years agoI am not using Qsys. I am using MegaWizrad to generate ALTMEMPHY with example driver. I have connected the top level (example driver) clock_source and global_reset_n to the correct pin appropriately.
-- Calibration fails with or without DIMM installed. Memory stick absence create no difference in behavior -- Clocks are differential and at 125Mhz -- There is some initial activity on DQ/DQS channels, but they die off (at every reset) -- local_init_done stays low -- Signal tap shows a single write with some random words, but "ready" never gets asserted (at every reset) -- Signal tap shows that Calibration_fail gets asserted at every reset -- ModelSim shows just a blip on DQ/DQS attempting to write all 0s and all 1s pattern, then they are tristate forever -- Modelsim runs forever (overnight), but test_complete never goes high, and I dont see any activity on DQ/DQS after a initial blip (see attached)