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[802.3_NGAUTO] AW: 10SPE (802.3cg) adhoc agenda for wednesday and website updated

Title: Default Disclaimer Daimler AG

Dear all,

dear Georg,


Just to clarify, because I am not sure, if I can participate on Wednesday ad hoc call:


I have provided a sample of an Touchstone file, representing the max_linear topology from, slide 4.


This is just to “test” if this data is a) readable and b) helpful for further investigations from semiconductor vendor side.


Here is the Touchstone file:

The example is an S16p touchstone file. It represents the MAX passive linear topology shown in earlier presentations, the topology is simulated in a 50ohm system (each wire is terminated with 50ohms in the simulation). The differential ports are always two adjacent ports of the simulation (e.g. "1" and "2" are together the differential port of the head node, 3 and 4 are the ports of the first leave node and so on...) Question to the group: is such data helpful to simulate further? If so, I will try to provide multiple topology examples.






Stefan Buntz

Mercedes-Benz Cars Development, Daimler AG

Group Research & Advanced Engineering

Safeguarding Hard & Software 

HPC: U059 – Dep.: RD/FEQ


Phone: +49 731 505-2089

Mobil: +49 176 30 90 51 44

Fax: +49 711 305 216 45 95

E-Mail: stefan.buntz@xxxxxxxxxxx


Address for visitors:

Buildung 10

Room 3.2.022

Wilhelm-Runge-Str. 11

D-89081 Ulm




Von: George Zimmerman [mailto:george@xxxxxxxxxxxxxxxxxxxx]
Gesendet: Freitag, 21. April 2017 18:40
An: STDS-802-3-NGAUTO@xxxxxxxxxxxxxxxxx
Betreff: [802.3_NGAUTO] 10SPE (802.3cg) adhoc agenda for wednesday and website updated


All – I have received several requests for presentations and even some early submissions of material for Wednesday’s ad hoc.  It should be a very useful ad hoc for PHY guys.


We have 4 presentations of significant substance, so it will be a relatively full agenda.  If you have anything more that you would like to contribute, please request soon (before Monday morning pacific time).


I have uploaded what I have received to the website, including touchstone models for a multidrop line, and noise measurement data from Steffen Graber for multiple environments.  I suggest taking an early look at them so you know what questions to ask.  Of course, I always encourage using the reflector for questions on things like these, and sooner is better than later.


Also, we should have a presentation on automotive multidrop from Kirsten Matheus.


Additionally, we have a repeat of the presentation given on the NGAUTO ad hoc last week, discussing issues and potential needs for specification of the MDC/MDIO interface in automotive applications.  I would like to take the NGAUTO presentation first on the agenda to accomodate that those calling in from the other group just because they missed it this week.


Specification Gaps and Improvement of MDC/

MDIO Interface for Automotive Applications

Rubén Pérez de Aranda


(Multidrop presentation)

Kirsten Matheus


Touchstone model for Multidrop passive linear topology (description)

(s16p file)

Stefan Buntz


10 Mb/s Single Twisted Pair Ethernet

Noise Measurements (presentation)

(zip file with measurement data)

Steffen Graber




George Zimmerman, Ph.D.

President & Principal

CME Consulting, Inc.

Experts in Advanced PHYsical Communications




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