Design Con 2015
Breaking News
Comments
Newest First | Oldest First | Threaded View
agk
User Rank
Rookie
re: Are design and test conflicting or symbiotic?
agk   10/23/2010 8:25:28 AM
NO RATINGS
Hi Frank , Golden words you said.Those who follow as you said win in technology and business associated with it

RobertRuiz
User Rank
Rookie
re: Are design and test conflicting or symbiotic?
RobertRuiz   10/22/2010 12:17:42 AM
NO RATINGS
Great comments from everyone. I work with Arif at Synopsys and we meet often with design teams from different companies. We are encouraged by the trend to consider test as part of the design (indeed - it is), and surprised to find that some teams still consider and execute it as a seperate activity. We agree that 'test' is essential, high value, and can be accomodated as an integral part of the design process starting with synthesis.

old account Frank Eory
User Rank
Rookie
re: Are design and test conflicting or symbiotic?
old account Frank Eory   10/21/2010 9:46:31 PM
NO RATINGS
Hank, I totally agree that "test" is not something that foisted onto the "design" -- it is an integral part of the design. It is essential to get test engineering & design engineering talking to each other very early in the project, so there are no surprises or misunderstandings about test capability and cost. Designers also need to learn that the test engineer is their friend. When something is not working, you will be SO glad you have the fault coverage, the BIST, the test buses to bring out internal signals, the JTAG, etc. I don't quite understand why the author so emphasized the point about inserting test logic at the RTL level, before synthesis. Haven't we all been doing this for at least the last 10 years? It's been a long time since I've seen anybody use "bolt-on methods" -- for exactly the reasons the author states.

HankWalker
User Rank
CEO
re: Are design and test conflicting or symbiotic?
HankWalker   10/21/2010 4:03:55 PM
NO RATINGS
While I agree with these comments, I think the slant is that "test" is something foisted onto the "design". As was said long ago, customers won't pay much if the chips aren't tested, and they won't pay if the manufacturing test cost is too high. So test is every bit as much a design constraint as functionality, area, power and delay. Design would be so much easier if we didn't have to worry about test, but it would be so much easier if we didn't have to worry about area, delay or power either. The article does not mention the fact that the fundamental properties of DFT - controllability and observability - are also useful for debug, which is also a design requirement.

Bob Lacovara
User Rank
Rookie
re: Are design and test conflicting or symbiotic?
Bob Lacovara   10/21/2010 2:49:33 PM
NO RATINGS
This is a thoughtful article concerning the increasing need for DFT in the author's design domain. It is part and parcel of a larger problem, though. That is the desire to perform hardware and software design simultaneously. Once called co-design, this activity was something of a chimera except in special cases. Modern design tool chains, however, can support co-design by providing a platform that can either simulate hardware or incorporate hardware in loop for both the control electronics and the "plant", the hardware being controlled. This comes at a price: the tool chain isn't cheap; a fair amount of training is needed to use the tool set effectively, and there is no single tool chain that will bridge the spectrum from IC design through, say, turbine engine FA controllers. Still, tool chains do exist, and it seems to be more important from day to day to employ them on large and even medium-size designs.

p_g
User Rank
Rookie
re: Are design and test conflicting or symbiotic?
p_g   10/20/2010 10:58:16 PM
NO RATINGS
I agree with the over all picture of DFT and design being two orthogonal objectives leading to complexity in design cycle. Not only the time line or schedule, we pay price on chip overall functionality too e.g. due to DFT the clock scheme get even complicated leading to suboptimal Clock tree synthesis which means more power while phone is operating or more heat up when processor is operating.



Top Comments of the Week
Flash Poll
Like Us on Facebook

Datasheets.com Parts Search

185 million searchable parts
(please enter a part number or hit search to begin)
EE Life
Frankenstein's Fix, Teardowns, Sideshows, Design Contests, Reader Content & More
<b><a href=Betajet">

The Circle – The Future's Imperfect in the Present Tense
Betajet
Post a comment
The Circle, a satirical, dystopian novel published in 2013 by San Francisco-based writer Dave Eggers, is about a large, very powerful technology company that combines aspects of Google, ...

Max Maxfield

Recommended Reads From the Engineer's Bookshelf
Max Maxfield
2 comments
I'm not sure if I read more than most folks or not, but I do I know that I spend quite a lot of time reading. I hate to be idle, so I always have a book or two somewhere about my person -- ...

Martin Rowe

No 2014 Punkin Chunkin, What Will You Do?
Martin Rowe
2 comments
American Thanksgiving is next week, and while some people watch (American) football all day, the real competition on TV has become Punkin Chunkin. But there will be no Punkin Chunkin on TV ...

Rich Quinnell

Making the Grade in Industrial Design
Rich Quinnell
15 comments
As every developer knows, there are the paper specifications for a product design, and then there are the real requirements. The paper specs are dry, bland, and rigidly numeric, making ...

Special Video Section
The LT8640 is a 42V, 5A synchronous step-down regulator ...
The LTC2000 high-speed DAC has low noise and excellent ...
How do you protect the load and ensure output continues to ...
General-purpose DACs have applications in instrumentation, ...
Linear Technology demonstrates its latest measurement ...
10:29
Demos from Maxim Integrated at Electronica 2014 show ...
Bosch CEO Stefan Finkbeiner shows off latest combo and ...
STMicroelectronics demoed this simple gesture control ...
Keysight shows you what signals lurk in real-time at 510MHz ...
TE Connectivity's clear-plastic, full-size model car shows ...
Why culture makes Linear Tech a winner.
Recently formed Architects of Modern Power consortium ...
Specially modified Corvette C7 Stingray responds to ex Indy ...
Avago’s ACPL-K30T is the first solid-state driver qualified ...
NXP launches its line of multi-gate, multifunction, ...
Doug Bailey, VP of marketing at Power Integrations, gives a ...
See how to ease software bring-up with DesignWare IP ...
DesignWare IP Prototyping Kits enable fast software ...
This video explores the LT3086, a new member of our LDO+ ...
In today’s modern electronic systems, the need for power ...