> > >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.
> >
> > Not true. If the oscillator frequency is 300ppm off, the serial comms
will
> > also be off by 300ppm. One for one, to a first approximation (ignoring
> > second order effects in the PLL).
>
> Kewl.  But I wont believe it till I see it.  :)

I don't know what your problem is here.  This is just plain grade school
math.  There are no real world part tolerance issues in this argument.


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