How to identify clock fault for s32k14x

[vienpeng]

Hello, everyone !

I want to design a function that identifies the clock fault for S32K146, but the reference manual says "products in the S32K1xx' series do not have CMU."

Is there any other methods to achieve this function ?

[Senlent · Accepted solution]

Hi@vienpeng

      The CMU module only detects the FIRC clock as the main source, which does not mean that the clock source without the CMU module has no error detection mechanism. SOSC and SPLL  can  meet your needs. 

etc.

SOSC:

SPLL:

Hope this answer is useful to you！

BR!

    Jim.

[vienpeng]

Thank you ! @Senlent , I got it.