RE: XAUI AC coupling
All,
I would prefer mandatory AC-coupling at the input (only one capacitor in
each lane).
Henning
Henning Lysdal Tel.: +45 70 10 10 62
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-----Original Message-----
From: Rich Taborek [mailto:rtaborek@xxxxxxxxxxxxx]
Sent: 2. oktober 2000 22:36
To: HSSG
Subject: Re: XAUI AC coupling
Ali,
That would be a mute point is AC-coupling operation is required and
DC-coupling is allowed in a note which essentially has no teeth,
compliance requirements, etc.
Best Regards,
Rich
--
Ali Ghiasi wrote:
>
> Rich Taborek wrote:
> >
> > Ladies and Gentlemen,
> >
> HI Rich
>
> You also need to ask the people who still want Dc-coupling, how many
> would agree to a common mode
> voltage. Earlier when I proposed a common mode voltage and a method of
> AC and DC coupling everyone
> wanted their own common mode voltage. Without agreeing t to a common
> mode we have no standard and no point to discuss it under 802.3.
>
> Thanks,
>
> Ali Ghiasi
> Newport Comunication
>
> > A recap of which way folks are leaning on this issue:
> >
> > Allow AC or DC-coupling
> >
> > Ed Grivna - Cypress
> > Dawson Kesling - Intel
> > Jeff Porter - Motorola
> > Rich Taborek - nSerial
> > Simon Sabato - Intel
> > Tom Palkert - AMCC
> > Sharam Hakimi - Lucent
> > Fred Weniger - Vitesse
> >
> > Mandatory AC-coupling
> >
> > Vipul Bhatt - Finisar
> > Larry Miller - Nortel
> > Joel Dedrick - PMC-Sierra
> > Richard Dugan - Agilent
> > Justin Chang - Quake
> > Ali Ghiasi - Newport Communications
> > Chris Simoneaux - Picolight
> > Pat Thaler - Agilent
> > Geoff Thompson - Nortel
> > Howard Frazier - Cisco
> >
> > Clearly there's no clear direction. However, as a compromise, I'm not
> > averse to going in the following direction: Specify and mandate
> > AC-coupled operation for XAUI. An note accompanying the coupling text
> > should allow DC-coupled operation in XAUI links which meet all other
> > XAUI specifications. Furthermore the overview and application subclauses
> > must be modified to show cause for AC-coupling is required. The current
> > test strongly suggests that DC-coupling is more appropriate (i.e.
> > chip-to-chip interconnect). What say?
-------------------------------------------------------
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