Version Found: v1.5
Version Resolved and other Known Issues: See
(Xilinx Answer 45195).
All MIG 7 series DDR3 RDIMM designs will fail in hardware during DQS Found Stage of calibration (pi_dqs_found_error=1) as a result of the MRS programming sequence being handled incorrectly. This is due to the chip select logic always holding chip select (cs_n) Low that causes calibration to continuously program MRS registers which corrupts the MRS sequencing.