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dilipnam
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re: Opinion: Lessons unlearned and Nissan's pigeons
dilipnam   7/14/2010 7:32:30 AM
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Here in India even as automobile manufacturing is booming, the supply chain management both for electronic parts and mechanical suffer much the same woes.The dependence on import of almost all electronic components, delays, and an uncommitted approach of suppliers makes us all keep our fingers crossed. Dilip Nambiar Kaynes technology

WKetel
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re: Opinion: Lessons unlearned and Nissan's pigeons
WKetel   7/14/2010 2:02:36 AM
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The shortage of custom chips and the resulting shortage of control modules also points out the problem with changing the design so very frequently. They do that to discourage the aftermarket people, at least that is what I heard. Just think, if they had a control module that used a separate memory, they could have multiple sources using standard processors. The application specific part would be in the prom, or ROM, or some other kind of memory. I know that it would raise the cost a little bit, but so what if a module that sells for $1K, as a replacement part. On some rare occasions, it may be worthwhile to optimize for something besides minimum production cost.

old account Frank Eory
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re: Opinion: Lessons unlearned and Nissan's pigeons
old account Frank Eory   7/13/2010 10:45:03 PM
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@tt3 yes, I thought the same thing. Today's ASIC or SoC is not an easy thing to second source, and it's not a simple issue of an automaker wanting to save cost.

ttt3
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re: Opinion: Lessons unlearned and Nissan's pigeons
ttt3   7/13/2010 8:45:32 PM
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The term "ASIC" and "second source" don't seem to go together to me.

old account Frank Eory
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re: Opinion: Lessons unlearned and Nissan's pigeons
old account Frank Eory   7/13/2010 6:47:22 PM
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Despite of modern supply chain management, it seems that this time the surge in demand coming out of the downturn was steeper than anyone predicted, and updates to forecasts weren't far enough out in time to avoid allocations and supply chain disruptions. Every time we go through a boom and bust cycle, someone predicts that this time will be different. They usually mean less amplitude change between the peak of the boom and the valley of the bust, but this time just the opposite seems to have occurred.



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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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