AR# 34329


MIG Virtex-6 DDR2 - Multi-Controller Support


The MIG tool does not allow me to select multiple controllers for DDR2. Is it possible to interface to more than one DDR2?

NOTE: This Answer Record is part of the Xilinx MIG Solution Center (Xilinx Answer 34243). The Xilinx MIG Solution Center is available to address all questions related to MIG. Whether you are starting a new design with MIG or troubleshooting a problem, use the MIG Solution Center to guide you to the right information.


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.

Related Articles:
(Xilinx Answer 33268) - Sharing MMCMs
(Xilinx Answer 34267) - Sharing Banks across multiple controllers

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AR# 34329
Date 12/15/2012
Status Active
Type General Article
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