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Re: [802.3BA] XLAUI / CAUI Ad Hoc

A few quick points on this:

1.	The project objective is 10^-12.  Like 802.3ae, where the XAUI specification is also 10^-12.  Expecting two links in a chain to be both running at the worst BER at the same time is unrealistically pessimistic.

2.	The ICs for CAUI/XLAUI have to deliver 10^-12 with a connector between them, which adds significant reflections and crosstalk.  For a chip-to-chip link without a connector, the BER will be much better.  More investigation would be needed to determine if this transforms 10^-12 to 10^-15; it may.

3.	ICs for PPI (for 40GBASE-SR4 and 100GBASE-SR10) have to generate less jitter and tolerate more jitter than CAUI/XLAUI.  I believe that ICs that meet these specs will achieve 10^-15 or better in a CAUI/XLAUI application.

So, I don't see a need for anything in the draft.  Quantifying the effect of the connector would be helpful, but ICs for applications 2 and 3 above will be available; use one of them for 10^-15.


-----Original Message-----
From: Ryan Latchman [mailto:Ryan.Latchman@xxxxxxxxxx]
Sent: 01 December 2008 13:55
To: STDS-802-3-HSSG@xxxxxxxxxxxxxxxxx
Subject: [802.3BA] XLAUI / CAUI Ad Hoc

Dear 802.3ba Colleagues,
I'd like to schedule the next meeting for the XLAUI / CAUI Ad Hoc as follows:
Friday December 5th 8:30am - 10:30am US PDT
Dial-in Number (Canada & USA) :1 877 234 4610      
Participant Conference Access code: 4405734 # (see below for additional phone numbers)
Presentations should focus on technical details / values related to the nAUI specification.  In particular, I would like to focus on the BER objective of the interface.  For additional information, please see the last presentation on this topic at
Anyone wishing to present, please follow the guidelines described on the Procedure for Presenters web page:
If you are planning to participate please take a moment to read the IEEE patent policy available here:
Ryan Latchman invites you to attend this online meeting. 

Topic: Ryan.Latchman@xxxxxxxxxx's meeting 
Date: Friday, December 5, 2008 
Time: 11:30 am, Eastern Standard Time (GMT -05:00, New York ) 
Meeting Number: 593 512 720 
Meeting Password: XLAUICAUI 

Please click the link below to see more information, or to join the meeting. 

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3. Enter the meeting password: XLAUICAUI 
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For assistance 
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You can contact me at: 
1-905-632 x2999 

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* Participant Conference Access code: 4405734 #
* Dial-in Number:416 883 8981      Toronto
* Dial-in Number:1 877 234 4610      Canada & USA
Best Regards,
Ryan Latchman
Market Manager
Analog & Mixed-Signal Products
Gennum Corporation
Phone:  905 632 2999 x 1610