Run RT1010 at 500Mhz clock?

[Elmi77]

Hi,

I'm doing my first steps with the RT1010 and the Clock Config Tool in MCUXpresso.

My plan is to run the RT1010 at its maximum clock of 500 MHz. What I have done so far:

• enabling 24 MHz clock source
• setting the mode to "Internal RC oscillator"

Now how can I multiply this clock to get 500 MHz at the core?

What I see at the moment:

• there is a PLL2 (System PLL) with a fixed divider of 22 which ends up with an PLL frequency of 528 MHz - isn't this illegal?
• some other PLLs where I can configure the dividers and multipliers in a way to result in a frequency close to 500 MHz but never exactly at 500 MHz
• a PLL3_MAIN_CLK which sounds like it is what I'm looking for but it does not provide and multipliers/dividers and therefore is at 24 MHz fixed

The details-view of my clock configuration looks like this at the moment:

So any idea how to configure the clocks properly?

Thank you

[Omar_Anguiano · Accepted solution]

Hello
Hope you are well.

With PLL2 it won't be possible to reach 500MHz at ARM clock so I suggest you use Enet PLL(PLL6) since it has a fixed frequency of 500MHz.

It is important to comment that for Industrial Grade RT1010 the maximum clock is 400Mhz, for consumer-grade the maximum is 500Mhz.

If you have more questions do not hesitate to ask me.
Best regards,
Omar