SWRZ071D May 2017 – December 2020 AWR1243
Core Compare Module (CCM-R4F) may Cause nERROR Toggle After First Reset De-assertion Subsequent to Power Application
AWR1243 ES1.0 and AWR1243 ES2.0
The CCM-R4F module compares the outputs of the two Cortex-R4F CPU cores and generates an error on any mis-compare. This ensures the lock-step operation of the two Cortex-R4F CPUs. The nERROR signal should only be set by the CCM-R4 module by a valid core mismatch. At power-on, some uninitialized circuits may cause the CCMR4-F to falsely detect a mis-compare.
The anomalous nERROR toggle would need to be ignored by the external monitoring circuit (if deployed).