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发表于 2008-12-17 09:34:13
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About 2000, It almost verify with functional pattern like VCD format.
About 2004, DFT started to be the mainstream, the most is insert scan chains in the SOC. It is due to the mast logic circuit inside the SOC is very hard to reach. And it needed to connect the relative D flip-flops to the outputs.
In the future, more Bists could be developed without adding to layout area and yield loss. |
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