CMU_FM Clock Monitors provide no error response

[Nick_Pascoe]

Hi NXP expert,

I am trying to understand why there is no error response for the faulted clocks that use the CMU_FM SM, see table below from S32G Reference Manual:

[naveenm]

Hi Nick,

CMU_FM is frequency metering unit. The purpose is to measure the clock frequency. For example CMU_FM_1 will measure the clock frequency of FIRC_CLK with reference to FXOSC_CLK. The count of metered clock (FIRC_CLK) will be stored in register, which processor can read. Based on count, the processor will take action. Therefore no specific error response needs to be mentioned in RM.

Refer to Chapter 69 Clock Monitoring Unit - Frequency Meter (CMU_FM)  S32G2 Reference Manual, Rev. 4, October, 2021.

Regards,

NaveenM

[Daniel_Wax]

I also posted this to an internal hardware site.