Slide 1 EBTW, 24-25 May 2006 Chilworth, Southampton, UK A perspective on SJTAG from a “test...

EBTW, 24-25 May 2006Chilworth, Southampton, UK

A perspective on SJTAGfrom a “test manager” (tools) vendor

Adam W Ley

ASSET InterTech, Inc.


“There are 10 kinds of people …”

“There are 10 kinds of people in the world. People who understand binary numbers, and those who don't.”

- unknown

(with acknowledgement to Ken Parker,whose email signature first brought it to my attention)


“The secret is …”

“The secret is to ask the right question. Then the answer takes care of itself.”

- unknown

(with acknowledgement to Carl Barnhart,whose email signature first brought it to my attention)


Enquiring minds want to know

What is SJTAG?

Or, What does SJTAG want to be when it grows up?

And, just as important (perhaps more), What is SJTAG not?


A Caution

One (baby) step at a time …

… crawl before walk …

… walk before run …


What is SJTAG?

Consortium?

Corporate buy-in?

“Just” a group of individuals (no offense intended)?


What is SJTAG?

White paper?

Clearly

( see www.dft.co.uk/SJTAG/SJTAG_white_paper_0.4.pdf )

Defining terms, etc.


What is SJTAG?

Standard(s)?

Presumably, at some point …

But what (first)

And for whom


What is SJTAG?

Architecture?

“Backplane” test bus

“JTAG” or not

Multidrop Full star Hybrid


What is SJTAG?

Silicon support devices?

Gateways Linkers Etc.


What is SJTAG?

Test manager tools?

Generation Application Diagnostic


What is SJTAG?

Description/ Data Format(s)?

Existing

Existing with Modification

Purpose-built


What is SJTAG?

Transport?

Application layer

…

Higher layer


What is SJTAG?

Design?

Manufacture?

Field Service?

Repair?


What is SJTAG?

Local?

Remote?


What is SJTAG?

eXternal?

Embedded?


What is SJTAG?

All of the above???

YES??

But, remember the caution …


What is SJTAG?

Issues/ Concerns

Security?

Others?


Your “TM” Tools Needs

Generation?

Application?

Diagnostic?

Other?


The End?

Hopefully just the beginning of a beautiful relationship …


Appendix

The field-service Development and Diagnostic Test Manager can be a free-standing system based on an extension to existing PC-based single-board boundary-scan testers and the question has arisen - is there a suitable JTAG Test Command and Data Language (TCDL) capable of covering the following basic requirements:

Represent embedded test data (e.g. vectors) efficiently Write to, Read from and Manage test data stored on the board Run an embedded test Configure and Validate an on-board PLD Capture the result of the test and Compare with the expected result Log test execution details (time, date, result, etc) Send specific test reports and service logs to the Test Manager

excerpt from www.dft.co.uk/SJTAG/EBTW05-SJTAG-Meeting.pdf


Appendix

Continued …

An initial survey has suggested that the answer is “no” but that there is sufficient interest amongst several companies to join together to intensify the search and, if necessary, start a process of creating a specification for the language.



Appendix

Quick Overview of SJTAG (Bill Eklow)Software based initiativeStandardized test vector format and protocol for remote

communicationOptimize reuse of vectors between Test/ATPG platformsOptimize transfer to and execution of test vectors on remote

systemsAssumes remote, on-board boundary scan controller


Slide 1 EBTW, 24-25 May 2006 Chilworth, Southampton, UK A perspective on SJTAG from a “test...

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