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Re: [802.3_RTPGE] Preliminary Objectives for July-2012 plenary meeting



Hi, Mehmet and Marek,

 

For what it is worth, the IEEE 802.3bj reach objectives for 100GBASE-KR4 and 100GBASE-KP4 PHYs are stated in loss terms, not a physical length, due to the various permutations of materials, connectors, trace geometries, etc. 

 

For example, there is “define a 4 lane PHY for operation over a printed circuit board backplane with a total channel insertion loss of <= 35 dB at 12.9 GHz.”

 

 

The full list of objectives is located at:  http://www.ieee802.org/3/bj/objectives_0312.pdf

 

With regards,

-Kent

 

 

Kent Lusted
Sr. Silicon Applications Engineer
Intel LAN Access Division
503-264-3373 (desk)
503-703-9433 (mobile)

 

From: Mehmet Tazebay [mailto:mtazebay@xxxxxxxxxxxx]
Sent: Tuesday, June 26, 2012 7:49 AM
To: STDS-802-3-RTPGE@xxxxxxxxxxxxxxxxx
Subject: Re: [802.3_RTPGE] Preliminary Objectives for July-2012 plenary meeting

 

Dear Marek,

 

Thank you for your quick comments. Here is my response to some of the points that you’ve made

 

1.       The objective (e) was intended to go with (g) but since we are considering to remove it then, we need to provide a cable reach for automotive environment and industrial environment (as suggested by Brad)

2.       The dB requirement in (g) was intended to make it independent of the topology which is not clear at the moment. In principal, I agree that we should provide the distance goal.

3.       (h) is a place holder for now. It was in the original text “faster than 1000BASE-T” but the proposed requirement is much faster. I expect to have some clarification after the wake-up requirement presentation in July-2012 plenary. Then, this goal will have proper wording.

 

4.       (i) was discussed yesterday. This is also a generic objective as the requirement on energy efficient operation is not clear yet. We need to have a discussion whether 802.3xx protocol will meet the requirement for RTPGE or not.

 

5.       There are currently different EMC requirements for different OEMS. In my humble opinion, we need to see a unified requirement  which, I believe, is being collected to be presented to the study group. Therefore, I’d like to keep this under discussion.

 

Many thanks for your inputs.

 

Regards,

 

-Mehmet  

 

 

From: Marek Hajduczenia [mailto:marek.hajduczenia@xxxxxxxxx]
Sent: Tuesday, June 26, 2012 4:23 PM
To: Mehmet Tazebay; STDS-802-3-RTPGE@xxxxxxxxxxxxxxxxx
Subject: RE: [802.3_RTPGE] Preliminary Objectives for July-2012 plenary meeting

 

Dear Mehmet and colleagues,  

 

Even though I have not been attending the calls (sorry, overlap with other activities), I have some thoughts on the objectives, wording and what is still missing. I attach the file with some embedded comments. Hope that helps

 

Regards

 

Marek

 

From: Mehmet Tazebay [mailto:mtazebay@xxxxxxxxxxxx]
Sent: 26 June 2012 14:18
To: STDS-802-3-RTPGE@xxxxxxxxxxxxxxxxx
Subject: [802.3_RTPGE] Preliminary Objectives for July-2012 plenary meeting

 

Dear Colleagues,

 

Thank you for your participation to yesterday’s Telco. It was very productive with lots of good discussion.

 

Please find the attached RTPGE preliminary objectives with the group’s feedback.

 

I welcome the inputs and further discussions on the reflector.

 

Regards,

 

-Mehmet