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AR# 55276

Soft Error Mitigation v3.4 - Spartan-6 LXT Scan Addressing is incorrect and causes a false alarm

Description

If I target a Spartan-6 FPGA LX75T, LX100T, or LX150T and configure the IP to disable scanning in the bottom GT row as directed by (Xilinx Answer 52716), the IP must be upgraded to v3.5 or later.

The starting frame address for the device scan is incorrect. 

This issue is observable when the SEM IP detects an error. 

The detected error location will be skewed by an offset, resulting in a correction at the wrong frame.

The IP will detect and attempt to correct the same issue repeatedly.

Solution

For the scan and correction to operate properly, Soft Error Mitigation IP v3.5 or later must be used. 

This issue has been resolved in Soft Error Mitigation v3.5 and an upgrade to v3.5 is required when targeting one of these parts.

Please refer to (Xilinx Answer 52716) for details of limitations when GTP are used in the design.

Linked Answer Records

Master Answer Records

Answer Number Answer Title Version Found Version Resolved
44541 Soft Error Mitigation Controller - Release Notes and Known Issues for v1.1 to v3.4 N/A N/A

Associated Answer Records

AR# 55276
Date Created 03/31/2013
Last Updated 03/16/2015
Status Active
Type General Article
Devices
  • Spartan-6
Tools
  • ISE Design Suite - 14.4
IP
  • Soft Error Mitigation