S32V234 CMU Clock Coverage

[jianlongzhang]

Hi, 

I would like to ask the clock coverage of S32V234 CMU module. From Table 22-5 of RM, CMU covers only some of the clocks. How to monitor other clocks who doesn't have build-in CMU, for example, QSPI_CLK, CORE_CLK, etc? 

Regards

Tony Zhang

[aarul · Accepted solution]

Hi Tony

The Clock monitors are put on all clock nodes based on clock architecture analysis and safety requirements derived from assumed safety concept. Some reasons for this are:

1. There is already a branch of clock that is monitored which offers adequate coverage. (eg: core_clk monitored via sys clock)

2. There are additional safety mechanisms that offer adequate coverage. (eg: core clock failure leading to malfunction in cores which will cause WDOG failure or CRC mismatch for data transfer through Quadspi)

3. Some modules are not safety related (eg: debug) and so do not need in-field protection.

Hope this helps,

Regards

-Aarul

[jianlongzhang]

Hi Aarul

Thanks for your comments. I think it is reasonable.