Arria II with single DDR3 SODIMM

I should have paid more attention.

Arria II GX does not support DDR3 DIMMs.

The reason for this is that DDR3 DIMMs are laid out such that the address and command signals daisy chain from component to component on the DIMM. This layout requires that the interface controller (FPGA in this case) support write and read leveling. Leveling basically means that the DQ/DQS groups are written or captured in sequential order to ensure proper timing with the address/command signals as they arrive at each component on the DIMM.

Prior to DDR3, the components were laid out on the DIMM using a standard T topology.

So, you can't drive a DDR3 DIMM with Arria II GX. You can however, layout standard components on your PCB similar to a DDR2 DIMM topology.

Jake