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AR# 37935

Soft Error Mitigation Controller v1.2 - After meeting timing, PAR reports hold violation upon running another routing phase

Description

Known Issue: v1.2, v1.1

ISE 12.4 and 12.3 PAR achieves a timing score of 0 and a subsequent routing phase introduces a small hold violation. The PAR report looks similar to the following:

Starting Router
Phase 1 : 142396 unrouted; REAL time: 2 mins 56 secs
Phase 2 : 99399 unrouted; REAL time: 3 mins 51 secs
Phase 3 : 9841 unrouted; REAL time: 5 mins 54 secs
Phase 4 : 9841 unrouted; (Setup:0, Hold:3967472, Component Switching Limit:0) REAL time: 6 mins 41 secs
Phase 5 : 0 unrouted; (Setup:0, Hold:3901462, Component Switching Limit:0) REAL time: 7 mins 38 secs
Phase 6 : 0 unrouted; (Setup:0, Hold:3901462, Component Switching Limit:0) REAL time: 7 mins 38 secs
Phase 7 : 0 unrouted; (Setup:0, Hold:3901462, Component Switching Limit:0) REAL time: 7 mins 38 secs
Phase 8 : 0 unrouted; (Setup:0, Hold:3901462, Component Switching Limit:0) REAL time: 7 mins 38 secs
Phase 9 : 0 unrouted; (Setup:0, Hold:0, Component Switching Limit:0) REAL time: 8 mins 29 secs
Phase 10 : 0 unrouted; (Setup:0, Hold:3, Component Switching Limit:0) REAL time: 8 mins 38 secs
WARNING:Route:452 - Not all timing constraints have been achieved. Please consult the `Post-Place & Route Static Timing Report' to determine the actual timing results. For suggestions on how to work around this problem go to http://support.xilinx.com and `Search Answers Database' using the text of this message.

Solution

This small hold violation does not cause any problems and only occurs on the XC6VLX760 device.

This issue is scheduled to be fixedin ISE software 13.1.

Revision History
12/24/2010 - Updated for v1.2
10/05/2010 - Initial Release

Linked Answer Records

Master Answer Records

Answer Number Answer Title Version Found Version Resolved
37934 Soft Error Mitigation Controller v1.1 - Release Notes and Known Issues N/A N/A

Associated Answer Records

AR# 37935
Date Created 09/13/2010
Last Updated 05/20/2012
Status Active
Type Known Issues
Devices
  • Virtex-6 CXT
  • Virtex-6 HXT
  • Virtex-6 LX
  • More
  • Virtex-6 LXT
  • Virtex-6 SXT
  • Less
Tools
  • ISE Design Suite - 12.3
IP
  • Soft Error Mitigation