MPC5748g Flexray clock

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MPC5748g Flexray clock

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WM
Contributor II

MPC5748g Flexray clock using PLL how to set

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davidtosenovjan
NXP TechSupport
NXP TechSupport

Yes, it is the configuration

davidtosenovjan_0-1655214789228.png

 

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davidtosenovjan
NXP TechSupport
NXP TechSupport

You may have two options:
- either 40MHz directly feeded by crystal oscillator
- or 80MHz clock feeded from PLL

I am recommending to use following clock configurator:

https://www.nxp.com/docs/en/application-note/AN5392.pdf

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WM
Contributor II

Hello, davidtosenovjan        

    Thank you for your answer.      

     If FR_MCR[CLKSEL] is 1 in MPC5748, check whether other configurations are required in flexray PE clock?  I have configured FS80=80MHz. 

捕获.PNG

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davidtosenovjan
NXP TechSupport
NXP TechSupport

Yes, it is the configuration

davidtosenovjan_0-1655214789228.png

 

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