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Altera_Forum
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16 years ago

Quartus 9.1 Fitter Error(DDR2 High Performance Controller)

i changed the platform form 8.0 to 9.1 a few dyas before. there is a fitter error i haven't seen. i attempted to solve it in some ways, howerve none of them working. i didn't see this problem...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
15 years ago

Had a similar problem today with the DDR SDRAM High Performance Controller.

In my case the sdram settings in the .qsf file were (intentionally) incomplete (because of some problems I met in the past). I re-ran the sdram_pin_assignments.tcl script and adapted the pin names to match those of my design + (specific to my design) changed the OUTPUT_TERMINATION to "SERIES 50 OHM without CALIBRATION". I also noticed a (perhaps 2) new entry(/ies) in the .qsf file : set_instance_assignment -name T11_DELAY 7 -to <pin_name> and set_global_assignment -name MISC_FILE <filename>.dpf (which contains indications about the clock pins of the sdram).

Since then the fitter passes.

Regards,

P9