Re:
Seto,
Ah yes, my mistake. I was only considering the 10bit
interface even on these PHYs. Thanks for the correction.
Ben
"Seto, Koichiro" wrote:
>
> [Date: 03/24/2000 From Seto]
>
> Ben,
>
> Just FYI,
> Many (all?) 1000BASE-T PHYs support GMII.
> Also many (all?) also support 10b mode just in case the mating MAC does not
> support GMII.
> It seems PHY vendors did not worry about puttint 'extra' 10B8B coder inside
> their 1000BASE-T PHY.
>
> Seto
>
> >
> >
> > Tripathi,
> >
> > The MII is an example of an exposed interface because it has a
> > connector specified and the UNH IOL can test to it.
> >
> > The GMII is not an exposed interface since it is impossible
> > for UNH IOL to test to it. It is a convenience for the purpose
> > of writing the standard and (perhaps) for vendors to design
> > parts to the interface (though I don't know of any PHYs which
> > support this).
> >
> > The XGMII will be similar to GMII, not MII. It won't be an
> > exposed interface and I doubt a connector will be specified
> > for it (since we're argueing about how few inches it can
> > travel).
> >
> > Ben
> >
> > Devendra Tripathi wrote:
> > >
> > > Hi,
> > >
> > > Even though I find some comments from Roy a little pessimistic, I too
> get
> > > confused sometimes
> > > by different comments from different people. Could we state clearly
> that
> > > XGMII is a possible
> > > "exposed" interface, on the lines of MII/GMII and also that UniPHY
> > > architecture is consistent
> > > with it (I think Howard already said this earlier).
> > >
> > > Thanks,
> > > Tripathi.
> >
> >
> > --
> > -----------------------------------------
> > Benjamin Brown
> > Router Products Division
> > Nortel Networks
> > 1 Bedford Farms,
> > Kilton Road
> > Bedford, NH 03110
> > 603-629-3027 - Work
> > 603-624-4382 - Fax
> > 603-798-4115 - Home
> > bebrown@xxxxxxxxxxxxxxxxxx
> > -----------------------------------------
> >
--
-----------------------------------------
Benjamin Brown
Router Products Division
Nortel Networks
1 Bedford Farms,
Kilton Road
Bedford, NH 03110
603-629-3027 - Work
603-624-4382 - Fax
603-798-4115 - Home
bebrown@xxxxxxxxxxxxxxxxxx
-----------------------------------------