Re: link-up link-down ethernet switch tale of woe
On 10-02-02 03:23:31, Stan Hoeppner wrote:
> briand@aracnet.com put forth on 2/2/2010 12:11 AM:
>
...
> > ...25.0006 MHz crystal. ...
...
> ... I'm sure the system design tolerance is much greater than
> 0.0006%. ...
Me too, but (25.0006/25.0 - 1.0)*100.0 = .0024%. Googling shows that
the IEEE 802.3 spec is ±50ppm (.000050 or .0050%), so, with the
crystal's own tolerance (whatever it is) it may be OOT.
--
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' <http://www.georgeanelson.com/>
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