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Clock debugging

Question asked by Sachin Mathad on Feb 11, 2020
Latest reply on Feb 13, 2020 by Mark Butcher

Hi NXP community, 

 

I have a couple of questions regarding debugging of the clock on Kinetis K24. 

 

We want to check the stability and jitter of the clock on the 48MIRC. Hence, we want to be able to measure all the clocks before and after the change from the 8MHz external crystal (currently in use) to the 48MIRC. 

 

1. I understand from the reference manual that we can check the system/core clock using trace_clkout on PORTE 0th pin.  Please correct me if I am wrong. 

 

2. Is there anyway I can probe the other clocks- bus clock, flex clock and flash clock? Please let me know the modules and the pins if there is any such provision. 

 

Regards,

Sachin

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