| Thread Links | Date Links | ||||
|---|---|---|---|---|---|
| Thread Prev | Thread Next | Thread Index | Date Prev | Date Next | Date Index |
|
I would like to call a single 40GBASE-T PHY ad hoc for next week to discuss getting comments to close out some open issues in the
bq draft – this is intended to get comments in to draft 1.2 so that we can close them. These are predominantly aimed at PHY designer issues which require a look and conclusion, so I would appreciate it if the various PHY teams would indicate their preference for Tuesday, Wednesday or Thursday next week. The issues I see so far are: -
Table 80-3 Maximum pause quanta -
Whether FR should be made a mandatory capability (which can be disabled by register), remain optional, or be deleted (various places in the text) -
PBO level at which startup begins (see 113.4.2.5.14) -
Whether we should continue to support 8 levels of PBO up to 14 dB of PBO (which seems a bit excessive since the maximum required is 6dB) (various places in the text, not flagged by editor’s notes) -
Whether the transmitter linearity specification is needs reformulating (113.5.3.2, equation 113-9) -
The lowest frequency we care about cabling delay (113.5.4.6.10 & 113.7.2.5) Any other issues are welcome, but please try to focus on decisions to be made. I do not plan to address other issues in the draft, such as the CMNR (cable clamp) text, which Pete Cibula is addressing, or the various TBD’s on cabling specs (pretty much all of 113.5.4.6 short reach); but want to encourage reviewers
to review and comment on them, removing TBDs or proposing text as needed. I would add that to go to WG ballot in March, as is our plan, we should plan to remove the TBDs and at least fill the CMNR test with something we believe is workable (that is, we don’t have to prove it right – but we should believe that
it is close and not know it is wrong). That doesn’t fix anything in stone, we can fix and refine during WG ballot. George Zimmerman Principal, CME Consulting Experts in Advanced PHYsical Communications Technology george@xxxxxxxxxxxxxxxxxxxxxxxxxxxxx 310-920-3860 (PLEASE NOTE NEW EMAIL ADDRESS.
THE OTHER WILL STILL WORK, BUT PLEASE USE THIS FOR CME BUSINESS) |