how to debug the scan chain failure on silicon

[jaanki]

Hi

How to debug the scan chain failure on silicon.
How to find which flop is failing , please explain


-thanks

 

[rca]

When the pattern failed a report with the cycle number. This cycle number give you the position in scan chain. Then you know which flow failed.
And the tool vendor like Mentor, as a diagnostic tool, where you could provide the log file from certain tester and then it directly analyze that and indicate the source of the issue.