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AR# 34160 LogiCORE IP RXAUI v1.1 - The Virtex-6 FPGA Example Design MMCM can cause DRC errors

Description

In Virtex-6 FPGAinstances of the RXAUI v1.1 core, the MMCM parameter values used in the example design will result in an unsupported multiplication factor of 4. This will result in DRC failures in the next release of the ISE Design Suite software.

For more information on the MMCM issue, see (Xilinx Answer 33849).

Solution

The MMCM parameter values should be changed as follows:

CLKFBOUT_MULT_F: from 4.0 to 6.0
CLKOUT0_DIVIDE_F: from 2.0 to 3.0
CLKOUT1_DIVIDE: from 4 to 6

Linked Answer Records

Master Answer Records

Answer Number Answer Title Version Found Version Resolved
33849 Virtex-6 FPGA MMCM - New Requirements for all MMCMs, VCO minimum frequency, and CLKFBOUT_MULT_F values N/A N/A
33311 LogiCORE IP RXAUI v1.1 and v1.1 rev1 - Release Notes and Known Issues for ISE 11.3 and ISE 11.5 N/A N/A
34019 ISE Design Suite 11.4.1 - Known Issues for Virtex-6 FPGA Service Pack N/A N/A

Associated Answer Records

Answer Number Answer Title Version Found Version Resolved
33311 LogiCORE IP RXAUI v1.1 and v1.1 rev1 - Release Notes and Known Issues for ISE 11.3 and ISE 11.5 N/A N/A
34019 ISE Design Suite 11.4.1 - Known Issues for Virtex-6 FPGA Service Pack N/A N/A

Actions

AR# 34160
Date Created 01/22/2010
Last Updated 06/19/2012
Status Active
Type Known Issues
Devices
  • Virtex-6 CXT
  • Virtex-6 LX
  • Virtex-6 LXT
  • Virtex-6 SXT
Tools
  • ISE Design Suite - 11.3
  • ISE Design Suite - 11.4
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