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re: TSMC's Chang: 'The worst is behind us' on 28-nm
Steve_Chang   4/20/2012 3:27:08 AM
So, what is the actual yield rate? anybody?

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re: TSMC's Chang: 'The worst is behind us' on 28-nm
PV-Geek   4/19/2012 4:18:32 PM
The real issue at TSMC may remain a mystery but it that doesn't change the fact that Qualcomm, nVidia and others are looking at second sources. True or not that potentially hurts market share.

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re: TSMC's Chang: 'The worst is behind us' on 28-nm
mcgrathdylan   4/18/2012 9:49:15 PM
I would agree with Mr. Nenni 100% on that. I checked with several sources and found that it was highly unlikely that TSMC shut down 28-nm production. I reported this in the EE Times Forum, also in March: http://www.eetimes.com/electronics-news/4237431/AMD-relinquishes-stake-in-Globalfoundries The point of mentioning this rumor in the story was to support the statement that TSMC has been dogged by rumors about it's 28-nm process.

Daniel Payne
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re: TSMC's Chang: 'The worst is behind us' on 28-nm
Daniel Payne   4/18/2012 8:25:40 PM
Mr. Nenni of SemiWiki has been saying since March that the 28nm rumors about TSMC shutting down production were false, http://www.semiwiki.com/forum/content/1091-tsmc-absolutely-did-not-halt-28nm-production.html

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re: TSMC's Chang: 'The worst is behind us' on 28-nm
goafrit   4/18/2012 7:31:29 PM
I missed the news then. I did not even know TSMC was having an issue at 28nm. I just assumed they have the market share to expand to any capacity they want.

As data rates begin to move beyond 25 Gbps channels, new problems arise. Getting to 50 Gbps channels might not be possible with the traditional NRZ (2-level) signaling. PAM4 lets data rates double with only a small increase in channel bandwidth by sending two bits per symbol. But, it brings new measurement and analysis problems. Signal integrity sage Ransom Stephens will explain how PAM4 differs from NRZ and what to expect in design, measurement, and signal analysis.

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