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[802.3_10SPE] AW: Objective - fast startup



Dear all,

 

fast start up is an extremely important requirement in automotive. We had it in 1000BASE-T1 and I would like to keep it. If it is not needed for 1000m, we should say so in the text. There are other things we do not need for 15m and we should find a way to say that too.

 

Kind regards, Kirsten

 

 

 

Von: Peter Jones (petejone) [mailto:petejone@xxxxxxxxx]
Gesendet: Samstag, 29. Oktober 2016 22:02
An: STDS-802-3-10SPE@xxxxxxxxxxxxxxxxx
Betreff: Re: [802.3_10SPE] Objective - fast startup

 

Hi Folks,

 

This is one that I have trouble with.

 

I think what is troubling is that with “run-time” configuration in place, there is some level of system/SW function required between power-on and fully operational. Without bounding that, I don’t see how we can specify a maximum time. The maximum time has to be “system_time + phy_time”.

 

I think the “phy_time” term in this case is the same as George listed in proposed objective 13 (below), e.g. 100ms.

13.  Support fast-startup operation using predetermined configurations which enables the time from power_on**=FALSE to a state capable of transmitting and receiving valid data to be less than 100ms.

 

I don’t think that we can usefully specify limitations on the system_time, so I don’t see that this additional proposed objective adds value.

 

Regards

Peter

 

 

_______________________________________________

Peter Jones             Cisco Systems

Principal Engineer      560 McCarthy Blvd.

Campus Switching S/W    Milpitas, CA, 95035 USA

Wrk: +1 408 525 6952    Mob: +1 408 315 8024

Email:                  petejone at cisco.com

Twitter:                @petergjones

LinkedIn:               /in/petergjones

_______________________________________________

 

From: George Zimmerman [mailto:george@xxxxxxxxxxxxxxxxxxxx]
Sent: Friday, October 28, 2016 11:48 AM
To: STDS-802-3-10SPE@xxxxxxxxxxxxxxxxx
Subject: [802.3_10SPE] Objective - fast startup

 

In addition to objective #13 (<100msec startup on predetermined configurations) we have had the following objective proposed:

 

          Support optional operation with run-time configuration, that specifies a maximum allowable time from power_on **=FALSE to a state capable of transmitting and receiving valid data.

 

The issue is that this seems to need some clarity as to how it differs from objective #13, fast startup in predetermined configurations.  Can someone either provide the clarity, and, preferably, reword so that it is clearly different from objective 13?

 

 

 

George Zimmerman, Ph.D.

President & Principal

CME Consulting, Inc.

Experts in Advanced PHYsical Communications

george@xxxxxxxxxxxxxxxxxxxx

310-920-3860