SWRZ101B December 2021 – December 2023 AM2732 , AM2732-Q1
ESM: nerror gets asserted in safety-enabled test cases when warm reset is asserted multiple times.
Glitches are observed on some ESM error lines just after warm reset is asserted. These glitches get captured in the ESM status registers as valid errors. After de-asserting warm reset, these errors are still pending, since these registers are cleared on power-on reset. When nerror is unmasked, these errors are seen at the nerror PAD.
To avoid this issue, the safety enable sequence should clear all the ESM status registers at the start.