FreeLists / si-list / [SI-LIST] Re: gigabit ethernet trace length

["Andrew Ingraham" <a.ingraham@xxxxxxxx>]

Could it be that they want to minimize discontinuities in the common-mode
impedance?

> In a 1000BaseT Ethernet circuit, I would like to extend the distance
> between the magnetics and the RJ-45 connector to about 6 to 8 inches
> (including good SI practice : ref planes, controlled Z, matched lengths,
> etc.). Everything I read says that you can't do that, that it must be
> less than an inch, but I don't understand why. Can someone explain?

Regards,
Andy

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