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[802.3_B10GAUTO] Questions to consider for laning

All –

thank you for tolerating the firehose on laning today.  Steve has uploaded a slightly updated version of the presentation (01b) than what I presented – adding highlighting and a note related to the output process that I keep forgetting.

 

Please consider the following items:

  1. BIG GO AHEAD QUESTION: Should be asking 802.3 to spin this to a separate project to give it proper consideration?
  2. QUESTION IMPACTING THE PHY IN GENERAL: Do we want/need a low-latency mode in the 25GBASE-T1 PHY to be used for higher speed (or latency sensitive) links which may have lower insertion loss and protected EMC environments (e.g., within-module PCB, shorter switch-to-switch or other links)?  If so, we need to start specifying at least a bypass for the RS-FEC decoder in the 25GBASE-T1 PHY, and possibly a short block code to deal with some noise.
  3. QUESTIONS ON PHY reset/fault handling in the RS:
    1. should it restart RS (it currently does) ?
    2. Do we report the faulted lane at the RS level? (as a clause 30 object)
    3. Do we want a global PHY reset from the RS? (if so, how… - right now we don’t have one)
  1. OTHER INFORMATION: Do we need to pass any autonegotiation or other PHY information up to the RS… (force_PHY_type or HCD phy type)

 

Also, if you have insight into matching just the first 6 octets of the preamble (which may be OK and would be a lot simpler) please contact me (or via reflector).

And, of course, any other thoughts on this subject…

 

-george

 

George Zimmerman, Ph.D.

President & Principal

CME Consulting, Inc.

Experts in Advanced PHYsical Communications

george@xxxxxxxxxxxxxxxxxxxx

310-920-3860

 

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