AR# 34324

MIG Virtex-6 DDR2/DDR3 - Rank Support


Does the MIG DDR2/DDR3 controller support dual rank DIMMs?

Note: This Answer Record is part of the Xilinx MIG Solution Center (Xilinx Answer 34243) 

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MIG 3.3 and older
The 3.3 MIG design does not support dual rank DIMMs.

MIG 3.4 and later
Dual rank support for the Virtex-6 DDR3 FPGA design is available starting with MIG 3.4 (ISE Design Suite 12.1). 

The dual rank support calibrates to one rank of the DIMM. 

This restricts deep support to dual rank DIMMs only. 

Deep configurations with multiple single rank DIMMs are not supported. 

DDR3 Dual Rank DIMMs are supported at 303 MHz (3300 ps).

Note: There are currently no plans to add quad-rank support to the Virtex-6 DDR2/DDR3 MIG solution.

Linked Answer Records

Associated Answer Records

Answer Number Answer Title Version Found Version Resolved
34316 MIG Virtex-6 DDR2/DDR3 - Supported Features N/A N/A
AR# 34324
Date 08/18/2014
Status Active
Type General Article
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