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Re: [802.3ae] XSBI vs XAUI


>From a specification perspective, the XGMII and XSBI are of equivalent
reach due to skew and timing considerations. XAUI is essentially
attenuation limited and not skew or timing limited. Therefore, XSBI is
not a practical extender for the XGMII.

Best Regards,
Richard Taborek Sr.                     Intel Corporation
XAUI Sherpa                    Intel Communications Group
3101 Jay Street, Suite 110    Optical Strategic Marketing
Santa Clara, CA 95054           Santa Clara Design Center
408-496-3423                                     JAY1-101
Cell: 408-832-3957          mailto:rich.taborek@xxxxxxxxx
Fax: 408-486-9783          

"Booth, Bradley" wrote:
> Within the scope of the draft standard, no.  You could do an implementation
> that way, but there is nothing within the draft that explains how to do it.
> Besides, using XSBI doesn't decrease the pin count, which is one of the big
> pluses for XAUI.
> Cheers,
> Brad
> ______________________
> Sent from my Blackberry...
> -----Original Message-----
> From: Betancourt, Olivier <olivier.betancourt@xxxxxxxxxxx>
> To: stds-802-3-hssg@xxxxxxxx <stds-802-3-hssg@xxxxxxxx>
> Sent: Wed Apr 10 16:57:06 2002
> Subject: [802.3ae] XSBI vs XAUI
>         Hello all,
>         This is a simple question. I am wondering if it is possible
> (practical) to use XSBI as the extension for XGMII instead of using XAUI?
>         Thanks,
>         Olivier