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Altera_Forum
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17 years ago

How to assign the VREF pin?

Hi, I use ddr-core v7.2 sp3 in my design. It assigns dq, dqs, dm pins in bank6. I set other ddr pins in bank5. After compilation I check the pin-out file and find that VREF pins of bank6 are set a...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
17 years ago

Well, Quartus decides not to use the VREF pins of bank 5. So I would assume that none of the pins of bank 5 use SSTL. Maybe you could check that the pins associated to the DDR memory and located in bank 5 are set to the proper I/O level.