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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...
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Altera_Forum
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15 years ago

I ran into the same issue. This is documented in http://www.altera.com/literature/dp/arria-ii-gx/pcg-01007.pdf . Look at note 12 on page 7. There is also a correction/clarification for that note somewhere else, but I forget where.

FvM, are you saying that I can use diff DQS and bidirectional DQ pins with SSTL standard and still be able to go beyond the 12-pin limit?