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AR# 31932

ChipScope Pro Analyzer - "ERROR: Fatal - Did not find trigger mark in buffer. Data buffer may be corrupt! "

Description

When I attempt to trigger my ILA in the ChipScope Analyzer, I see the following messages:

"ERROR: Fatal - Did not find trigger mark in buffer. Data buffer may be corrupt! "

Solution

This is down to a Timing Issue in the design or core that is affecting the data being sampled, corrupting the data in the buffer. To attempt to work around this issue, try the following:

-Simplify the ILA core.

-Apply offset in/out and period constraints to all applicable signals to ensure timing issues are not causing this issue.

-Slow down the speed of the cable.

-Explore changing the depth/width/trigger settings in order to get this design to meet timing again.

-Make sure that BUFG insertion on the JTAG clock is implemented.

-If core files (ICON and ILA) have been generated and subsequently moved during implementation, ensure that the associated constraint files were also moved (*.ncf).

-Re-implement with a Timing Driven Strategy in ISE.

AR# 31932
Date Created 11/20/2008
Last Updated 12/15/2012
Status Active
Type General Article