> > Oh! I just realized that the instruction clock is half of the
> > oscillator frequency. So I can still go with a 40 MHz crystal
> > oscillator and double it via PLL to 80 MHz to get the full 40 MIPS out
> > of it?

> ... READ THE DATASHEET, ...

What he said.

And look at my my prior worked solution that suggests you may
successfully use any external clock input from 1.6 MHz to 40 Mhz,
given suitable parameter values.


       R.
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