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AR# 58906

SEM IP - Why uncorrectable and essential status are sticky?


Once an SEU event is observed and the uncorrectable and essential statuses are asserted, they will not go low until a software reset command is issued.


This is normal behavior for these two signals.

Unlike other status signals which are used to indicate the current state of SEM, these signals are used to indicate the nature of detected errors which are permanent until reconfiguration. 

These statuses are not recoverable with a soft reset.
AR# 58906
Date 09/03/2014
Status Active
Type General Article
  • Soft Error Mitigation
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