SWRZ097D April 2020 – November 2022 AWR6843
DCC Module Frequency Comparison can Report Erroneous Results
AWR6843 ES 1.0 and AWR6843 ES2.0
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.
Multiple measurements can be taken for the same clock pairs and abnormal frequencies reported can be ignored
Application code, where possible, could compare the clocks using an alternate clock comparator module (CCC).