> One thing that must be concidered is that any error that the
> Resonator or
> crystal has will also be multiplied by 4.   This could effect
> high speed
> serial IO.  As I dig further into this I will post my results.

Bullocks. The relative error, which is the important figure, remains the
same. But I guess a PLL will add some frequency jitter, but that should
not matter except maybe at very high baudrates (megabauds instead of
kilobauds).

Wouter van Ooijen

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