Re: [SI-LIST] : Re: Guard banding

Jon Powell (jonp@pacbell.net)
Wed, 12 Nov 1997 15:36:19 -0800

D. C. Sessions wrote:
>
> Jon Powell wrote:
> >
> > It seems that transposing bus signals would only reduce average
> > crosstalk and not worstcase crosstalk (ie. when all signal are switching
> > at the same time). If this is true, then what does this buy you?
>
> EMI reduction.
>
Actually, since you are forcing a portion of the return current (ie, the
crosstalk current) to switch modes (carriers) you may be increasing the
EMI.
> --
> D. C. Sessions
> dc.sessions@tempe.vlsi.com