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Slide 1 EBTW, 24-25 May 2006 Chilworth, Southampton, UK A perspective on SJTAG from a “test manager” (tools) vendor Adam W Ley ASSET InterTech, Inc.

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Presentation on theme: "Slide 1 EBTW, 24-25 May 2006 Chilworth, Southampton, UK A perspective on SJTAG from a “test manager” (tools) vendor Adam W Ley ASSET InterTech, Inc."— Presentation transcript:

1 Slide 1 EBTW, May 2006 Chilworth, Southampton, UK A perspective on SJTAG from a “test manager” (tools) vendor Adam W Ley ASSET InterTech, Inc.

2 Slide 2 EBTW, May 2006 Chilworth, Southampton, UK “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 signature first brought it to my attention)

3 Slide 3 EBTW, May 2006 Chilworth, Southampton, UK “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 signature first brought it to my attention)

4 Slide 4 EBTW, May 2006 Chilworth, Southampton, UK 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?

5 Slide 5 EBTW, May 2006 Chilworth, Southampton, UK A Caution  One (baby) step at a time …  … crawl before walk …  … walk before run …

6 Slide 6 EBTW, May 2006 Chilworth, Southampton, UK What is SJTAG?  Consortium?  Corporate buy-in?  “Just” a group of individuals (no offense intended)?

7 Slide 7 EBTW, May 2006 Chilworth, Southampton, UK What is SJTAG?  White paper?  Clearly ( see )www.dft.co.uk/SJTAG/SJTAG_white_paper_0.4.pdf  Defining terms, etc.

8 Slide 8 EBTW, May 2006 Chilworth, Southampton, UK What is SJTAG?  Standard(s)?  Presumably, at some point …  But what (first)  And for whom

9 Slide 9 EBTW, May 2006 Chilworth, Southampton, UK What is SJTAG?  Architecture?  “Backplane” test bus  “JTAG” or not  Multidrop  Full star  Hybrid

10 Slide 10 EBTW, May 2006 Chilworth, Southampton, UK What is SJTAG?  Silicon support devices?  Gateways  Linkers  Etc.

11 Slide 11 EBTW, May 2006 Chilworth, Southampton, UK What is SJTAG?  Test manager tools?  Generation  Application  Diagnostic

12 Slide 12 EBTW, May 2006 Chilworth, Southampton, UK What is SJTAG?  Description/ Data Format(s)?  Existing  Existing with Modification  Purpose-built

13 Slide 13 EBTW, May 2006 Chilworth, Southampton, UK What is SJTAG?  Transport?  Application layer …  Higher layer

14 Slide 14 EBTW, May 2006 Chilworth, Southampton, UK What is SJTAG?  Design?  Manufacture?  Field Service?  Repair?

15 Slide 15 EBTW, May 2006 Chilworth, Southampton, UK What is SJTAG?  Local?  Remote?

16 Slide 16 EBTW, May 2006 Chilworth, Southampton, UK What is SJTAG?  eXternal?  Embedded?

17 Slide 17 EBTW, May 2006 Chilworth, Southampton, UK What is SJTAG?  All of the above???  YES??  But, remember the caution …

18 Slide 18 EBTW, May 2006 Chilworth, Southampton, UK What is SJTAG?  Issues/ Concerns  Security?  Others?

19 Slide 19 EBTW, May 2006 Chilworth, Southampton, UK Your “TM” Tools Needs  Generation?  Application?  Diagnostic?  Other?

20 Slide 20 EBTW, May 2006 Chilworth, Southampton, UK The End?  Hopefully just the beginning of a beautiful relationship …

21 Slide 21 EBTW, May 2006 Chilworth, Southampton, UK 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

22 Slide 22 EBTW, May 2006 Chilworth, Southampton, UK 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. excerpt from

23 Slide 23 EBTW, May 2006 Chilworth, Southampton, UK Appendix Quick Overview of SJTAG (Bill Eklow)  Software based initiative  Standardized test vector format and protocol for remote communication  Optimize reuse of vectors between Test/ATPG platforms  Optimize transfer to and execution of test vectors on remote systems  Assumes remote, on-board boundary scan controller excerpt from


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