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KV46 : How to get a system/core clock @ 100MHz with 8 MHz crystal

Question asked by Pierre Le Pifre Employee on May 16, 2017
Latest reply on May 17, 2017 by Pierre Le Pifre

Hi all,


I'm using board HVP-KV46F150M, with KV46 on it.

KV46 is clocked with external crystal @ 8 MHz, with load capacitors @ 10pF.


I would like to set up system & core clocks to 100 MHz, which is the maximum in RUN mode, according to datasheet.

However, I can't find a configuration matching this requirement when using MCUXpresso Clock Tool.

The reason is that the PLL output frequency must be in range 220 MHz - 480 MHz, and the only way I found to get 100MHz on system/core clock is to have PLL output @ 200 MHz (see attached capture)


Any idea ?

Thanks !