Re: [10GBASE-CX4] Re: Terminology
OK.
Larry
"DOVE,DANIEL J (HP-Roseville,ex1)" wrote:
> Hello all,
>
> I am getting dizzy!
>
> Rather than go through this loop again, I will take the
> chair's perogative to request that we halt the discussion
> until I can find the appropriate decision in our minutes
> and remind everyone what it was. OK?
>
> Thanks,
>
> Dan
>
> -----Original Message-----
> From: Oleynick, Gary [mailto:GOleynick@fciconnect.com]
> Sent: Wednesday, February 05, 2003 9:50 AM
> To: 'larry rennie'; Howard A. Baumer
> Cc: Zev Roth; 10GBASE-CX4 (E-mail); Oleynick, Gary
> Subject: RE: [10GBASE-CX4] Re: Terminology
>
> All,
>
> I thought adjustments at the Rx end were referred to as "adaptive or active
> equalization" and not pre/de-emphasis?
>
> Regards,
>
> Gary
>
> -----Original Message-----
> From: larry rennie [mailto:Larry.Rennie@nsc.com]
> Sent: Wednesday, February 05, 2003 9:17 AM
> To: Howard A. Baumer
> Cc: Zev Roth; 10GBASE-CX4 (E-mail)
> Subject: [10GBASE-CX4] Re: Terminology
>
> Thanks for the reply Howard. I just wanted to make sure that in our
> definition that neither term implied that it is a function of the TX or RX
> exclusively, i.e., you can have pre-empahsis or de-emphasis at the TX or RX
> end.
>
> Regards,
>
> Larry
>
> "Howard A. Baumer" wrote:
>
> > Larry,
> > I thought at one point along the way we desided to call it
> > de-emphasis. I know this hasn't caught on that well as even us here at
> > Broadcom call it pre-emphasis at times. I don't think this nomenclature
> > is that big of a deal. The more important definition is how the
> > emphasis is computed and then communicated to the group. On this point
> > the group desided to always speak in terms of (1-Vlow/Vhigh), where Vlow
> > is the low value of the step response and Vhigh is the value of the
> > peak.
> >
> > Howard
> >
> > larry rennie wrote:
> >
> > > Howard and Zev,
> > >
> > > In looking at some Dec 2002 presentations, I notice that the 2-tap
> > > filter Broadcom calls a tx "de-emphasis" filter is called a tx
> > > "pre-empahsis" filter by Mysticom (slide 5 of
> > > MysticomCX4_Dec0602:6.pdf). What is the terminology we have decided
> > > upon?
> > >
> > > Regards,
> > >
> > > Larry