The MIG tool does not allow me to select multiple controllers for DDR2. Is it possible to interface to more than one DDR2?
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The focus for multi-controller solutions in Virtex-6 devices is on DDR3 and QDRII+ due to demand. It is possible to place more than one DDR2 controller on a Virtex-6 device, however, the MIG GUI does not support automatic placement of more than one DDR2 controller. You must go through the GUI for each controller, specifying different banks for each controller and then combine the outputs into a single project. The Virtex-6 FPGA design does not allow sharing banks of DDR groups across multiple controllers. Therefore, separate banks must be selected.