I'm planning on buying the ATSAMD51 series chip specifically the (ATSAMD51J20A-AU 64-pin) chip. I see it has an internal clock which I think is 48MHz if I'm understanding the data sheet correctly but I want to use the full 120MHz CPU speed.
The data sheet on the clock is by far amazingly complicated, I've been at this for over 3 or 4 hours and I can't make heads or tails of any of this. There's like a hundred variables over the clock, timers, inputs, outputs, multiplies, dividers, integers, fractions, open and closed loops. I'm more lost than I've ever been.
Like I said I just want to have the CPU run at 120MHz and I understand I have to buy a low powered crystal and pipe it through and have it multiplied using the chip's internal multiplier and do this other stuff to get the CPU at 120MHz.
What do I need to buy? Where do I need to hook it up? and What settings do I need to set to get the 120MHz CPU speed?
Because I'm completely and utterly loss trying to make anything out of the data sheet.