The System JTAG Working Group

Minutes of Weekly Meeting, 2008-07-28

Meeting was called to order at 8:20am EDT

1. Roll Call (Participants):

Brad Van Treuren Carl Nielsen
Carl Walker
Peter Horwood
Heiko Ehrenberg
Ian McIntosh
Tim Pender (joined at 8:31am)

Excused absenses:
Jim Webster

2. Review and approve minutes

7/16/2008 minutes approved (Ian moved, Carl W. second)

3. Review old action items:

Adam proposed we cover the following at the next meeting:

Establish consensus on goals and constraints
What are we trying to achieve?
What restrictions are we faced with?

Establish whether TRST needs to be addressed as requirements in the ATCA specification if it is not going to be managed globally (All)
Register on new SJTAG web site ( http://www.sjtag.org/) (All)
Look at proposed scope and purpose from ITC 2006 presentation and propose scope and purpose for ATCA activity group (All)
Adam review ATCA standard document for FRU's states

4. Discussion Topics

Presentation on SJTAG interfaces (subset of BTW2006 presentation)

[Brad] Primarily slides 5-14 from the slide set link below:
http://www.molesystems.com/BTW/material/BTW06//BTW06%20Presentations/BTW2006-Van-Treuren.pdf
[Brad] reviewed aforementioned presentation to start discussion on SJTAG language requirements (Highlights follow):

slides 5, Static ordered set of vectors vs. Dynamically created set of vectors (Applications differ)
6, Functions for each BScan Device enabled by bit patterns (vectors)
7, We lose the function purpose when using vector based languages
8 (concept could be extended to dynamic set of vectors mentioned on slide 5),
9 (trying to identify boundaries between software layers; SJTAG could define such interfaces and not necessarily the underlying code specifically),
10, Too many variations at the TAP Controller Operation/Implementation to be able to standardize
11 Scan Primitives have a good chance for standardization
("Raw Bit Bang" TAP -> [Heiko] this seems to touch on the discussions going on in the JTAG Reuse group)
[Tim] Should these primitives also include things like ASP gateway selection?
[Brad] That is a very good example of specialization commands that may be needed. I am not sure how to support this yet, but we have to consider it. This is why I have thrown in the Raw Bit Bang TAP as a possible catch all for non-standard 1149.1 actions to be supported, but not built-in and simple.,
12 ([Tim] it might be useful to have ways to describe synchronization requirements in our language)
[Brad] Not just synchronization regarding gateway actions (e.g., broadcast mode), but also synchronization of when vectors are applied to devices in the same chain (the function aspect)
[Tim] There is also synchronization with the proper configuration of the chain,
13, Non-scan extensions might need to be accessible by the Test Step construct at a higher level to provide some of this synchronization.
14, There are different levels of control within an application of system testing

Results and Status from SJTAG Survey Activity

great response rate (around 40%)

Status and review of white paper sections

Section 1: Brad and Ian added some contents
Section 2: Heiko took Brad's additional use case descriptions and added them to the Wiki; did some rewording, converting bullet points into text, and reorganizing;
Section 3: Carl W. added diagrams

Review proposed scope and purpose statements (sent under separate email)

[Tim] we need to think of what the deliverables are; IEEE 1149.5 was a system level JTAG standard, and it failed ...;
out of time ... discussion postponed to the next meeting;

5. Schedule next meetings:

Monday, August 4th, 2008, 8:15am EDT
Monday, August 11th, 2008, 8:15am EDT
Wednesday, August 20th, 2008, 8:15am EDT [Brad has a conflict; Carl W. will set up a different bridge number for this call]

6. Any other business

[Ian] I'd like to get the newsletter e-mailed out;
- Completed vote for release of newsletter via follow-up email. Carl N., Carl W., Heiko, Brad, and Ian voted YES to release. No other responses received. (Formally, Carl N. made the motion and Carl W. seconded it)
[Brad] I am unable to attend on August 20.
[Carl W.] I can set up a bridge if someone can propose the agenda.

7. Review new action items

everyone to review scope and purpose proposal (ScopeandPurpose.ppt)
Carl set up bridge for August 20 (DONE)

8. Adjourned at 9:45am EDT

moved by Ian, second by Heiko

Thanks to Heiko for assistance in these minutes.

Respectfully submitted,
Brad