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RE: XGMII or SPI-4 ?

Hello WenDeh,
it would have to be SPI4-2 for 650MHz. I agree with your confusion and I have not seen any customers being very decisive about it. The HSTL interface for the XGMII is much simpler to implement, but I think the SPI4-2 is a more elegant solution. The selection of capable implementors is less than for the slower version.
Stefan Wurster

Stefan M. Wurster
Director, Engineering
465 Fairchild Drive, Suite 130
Mountain View, CA 94043
Voice: 650-988-4812
FAX:   650-988-0582

-----Original Message-----
From: owner-stds-802-3-hssg@xxxxxxxx [mailto:owner-stds-802-3-hssg@xxxxxxxx]On Behalf Of Wang Wendeh
Sent: Wednesday, May 09, 2001 13:55
To: stds-802-3-hssg@xxxxxxxx
Subject: XGMII or SPI-4 ?

Hi all,
Maybe this thread has been discussed before, but I just added in this mailing list for a few days.
Can anyone tell me which one ( XGMII or SPI-4) will be adopted for implementation between
link-layer and physical-layer device? The 10G standard proposes XGMII, while it seems to be that
vendors favor SPI-4, right? Or maybe this two interfaces can co-exist ??
Thanks a lot!