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How to configure MPC5643L without using external crystal?

Question asked by Ning Liu on Sep 14, 2017
Latest reply on Sep 19, 2017 by Ning Liu

I'm trying to configure MPC5643L by running with internal RC oscillator only.   I'm currently running on a 16 MHz external crystal. The most likely way is to configure FMPLL0 and FMPLL1 to use internal RC oscillator. Right now, all clocks are driven by PLL0 and PLL1.

 

Please help me to do so.

 

Thanks!

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