SPRZ488E March 2022 – May 2024 AM2631 , AM2631-Q1 , AM2632 , AM2632-Q1 , AM2634 , AM2634-Q1
DCC Module Frequency Comparison can Report Erroneous Results
The Dual-clock Comparator module, which is used to monitor a clock frequency while comparing with a known clock reference, could stop earlier than expected, and, thus, indicating the measured clock frequency to be lower. This is due to a clock domain crossing issue causing a preset to the error detection logic to get triggered.
Work-around (1): Application code, where possible, could compare the clocks using an alternate EDCC module (Present in MSS)
Work-around (2): Multiple measurements can be taken for the same clock pairs and abnormal frequencies reported can be ignored.