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Altera_Forum
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15 years ago

Arria II GX + DIMM = no more than 12 HSTL/SSTL output or bi-directional pins are allo

I'm trying to get my EP2AGX45 (572 package) Arria II GX to interface with a DIMM. I've run into an apparent limitation of 12 SSTL signals per I/O bank. It seems i will have to move up to the top devi...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
15 years ago

As far as I see, a 64-Bit DIMM can be operated from 3 IO banks in the 572 and 780-pin package. The limiting factor is the number of availiable DQS groups. The said "limitation of 12 SSTL signals per I/O bank" is caused by incomplete pin assignments.