I often wondered why they didn't make use of the free (and more accurate) clock from the 8U but never even bothered to look and see if it was available.
any issues could be resolved.
Quoteany issues could be resolved.Yep, I doubt they'd be the first with a clock signal running around a board.EME => ElectroMagnetic Emissions.
is there any advantage to taking the crystal's output from the 8u2's PC7 pin, rather than directly from the crystal output pin?
My first guess would be that the output wouldn't be enough to drive two clock inputs at once
you couldn't just connect XTAL1 outputs to the same terminal of the same crystal.
Come back, Duemilanove, all is forgiven..........