Re: [10GBASE-CX4] Spec Xmt or Rcv?
Steve,
Check, I agree. One spec I left out that the receiver will need is
return loss.
Howard
"Dreyer, Steve" wrote:
>
> Howard,
>
> OK. There has been some further reflector discussion on this topic
> questioning whether receive or transmit be spec'd (but not both).
> An argument to spec transmit is to allow equalization to occur
> in either cable or a chip and not mandate it to one or the other.
>
> Steve
>
> > "Dreyer, Steve" wrote:
> > >
> > > Howard,
> > >
> > > Took a quick look at the proposed draft and have the following
> > > top level comments:
> > >
> > > 4. Should the receiver level and jitter even be specified?
> > > The reason not to is: (1) If the xmt is specified, and if
> > > the channel is specified, then the signal at the receiver
> > > is already determined, no further specs needed on rcv,
> > > and (2) By specifying the receiver, doesn't this preclude
> > > equalization in the cable itself if someone chooses to do
> > > that?
> >
> > <HAB>
> > I agree with you here 100%. The receiver specification
> > can be reduced
> > to just section "54.7.4.1 Bit error ratio".
> > <HAB>
>
>