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AR# 34344

Spartan-6 POST_CRC - Known Issue with POST_CRC in ISE 11.4 software


SEU detection (POST_CRC) for Spartan-6 devices does not work with the ISE 11.4 software.


There is a known issue in the ISE 11.4 software with calculating the CRC value for SEU detection (POST_CRC). There is no work-around in the current software. The issue is fixed in the ISE 11.5 software and later versions.

Refer to the Spartan-6 FPGA Errata page for the Spartan-6 device which you are using. None of the ES (Engineering Sample) devices support POST_CRC, so the software issue is irrelevant in those cases. The Production status devices do support POST_CRC, so ISE 11.5 software should be used with those devices to fully support the POST_CRC solution.

AR# 34344
Date 04/29/2010
Status Active
Type General Article
  • Spartan-6 LX
  • Spartan-6 LXT