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CAD/CAM Corner
Are You Designing for Testability?
8/14/2013

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Cadence's Encounter family offers a complete test flow from concept to the silicon for ICs and SoCs.   (Source: Cadence)
Cadence's Encounter family offers a complete test flow from concept to the silicon for ICs and SoCs.
(Source: Cadence)

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Nancy Golden
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Must Become A Part of the Culture
Nancy Golden   8/14/2013 11:05:44 AM
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Great article - it just takes getting management to buy in so that it becomes corporate culture in a world where speed to market is often an overriding factor. If you can prove this:

"Catching errors early will save 10 to 1,000 times the money to solve. Due diligence ahead of time is key."

I worked for a company were we did company-wide QIT training. It focused on doing things right the first time and this certainly falls within that paradigm. While initially we had more expenditure and time costs, it did prove that in the long run it saved money and increased the profit margin as a result.

JimT@Future-Product-Innovations
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To the Main Point - - -
JimT@Future-Product-Innovations   8/14/2013 12:37:44 PM
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Cabe, regarding your main point, getting the pre-design requirements and specification right BEFORE Design & Build efforts are launched, I only say 'Amen'.  This seems like an obvious thing, but most times is still missed because of complexities stretching the hard-line schedule.  How many times have we heard the Program Manger direct that "we're slipping – we can address that later",,,,

JimT@Future-Product-Innovations
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,,,And to the Lesser Point - - -
JimT@Future-Product-Innovations   8/14/2013 12:38:39 PM
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On the lesser point of testing due-diligence, of you have precisely defined the point of diminishing returns in micro-miniaturization.  When discrete components continue to reduce in size, beyond the ability to probe with the point of a needle, design layouts naturally make the micro-leap to SoC's as you pointed out.  But testing proper functionality of SoC's  (to achieve the desired result  is either a theoretical analysis, or an empirical effort requiring actual  'build & sample' efforts.

Cadman-LT
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Platinum
Indeed
Cadman-LT   8/14/2013 3:14:24 PM
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Cabe, great article as always. I focused on the beginning of your article. It mentioned soldering. I know i't wasn't the point of the piece, but it reminded me of something. Now this was told to me by a friend so don't quote me...lol... but...a lot of the xbox360's failed due to a red ring of death..which I was told was due to "bad" solder that wouldn't withstand the heat of the unit. I do not recall MS ever admitting to this, but they did come out with a new unit which did not suffer this fault. Finding problems is the first step, admitting them the second, actually fixing them the third and most important. I know the engineers know this, but I don't think the companies care so much. It's all about money to them.  Just a thought.

Cadman-LT
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Platinum
Re: To the Main Point - - -
Cadman-LT   8/14/2013 3:21:43 PM
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JimT, nice. Yeah, we'll address that later....or maybe not at all!!! Time crunch. I hope there comes a day when we can focus on perfection rather than production. I do dream.

Cadman-LT
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Re: Indeed
Cadman-LT   8/14/2013 3:34:20 PM
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Cabe, I had one more thought one this. Now I could understand if I bought a cheap thing from wherever and it failed. Ok, I bought a cheap piece of junk. I get that. It is when the best still fail that gets me. I mean you think you are buying (paying) for the best, and it still fails? They need to have better quality control. Isn't that expected from the best?  Just my opinion.

Cadman-LT
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Cabe
Cadman-LT   8/14/2013 3:44:42 PM
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Hey Cabe....nothing to do with the article, but wanted your opinion if you have time. Do line conditioners for audio work? Never tried one, but I think I need one. I have hiss that I want rid of...just wondering if a line conditioner will remove it. Thanks.

Cadman-LT
User Rank
Platinum
Re: Cabe
Cadman-LT   8/14/2013 3:53:30 PM
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This is not an isolated incident. It plagues my house. Every room. It does not effect my laptop though. That could be because of the power source though. Just trying to figure this out, anyone with an idea.....let me know and thank you!

Cadman-LT
User Rank
Platinum
Re: Cabe
Cadman-LT   8/15/2013 8:35:09 AM
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Still looking for a reply, but my audio guy says a line conditioner won't solve my problem. So I guess my question is , is there a way to fix it?

Cadman-LT
User Rank
Platinum
Re: Cabe
Cadman-LT   8/15/2013 8:37:30 AM
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I'll go to an A/V channel haha sorry guys.

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