在进行时钟域转换（速率匹配）时，我们通常会双重翻转数据以避免亚稳态。双翻牌只是降低了亚稳定的可能性。三重翻牌将进一步减少它。
如何计算亚稳定性和使用的时钟域触发器数量之间的概率/关系？
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340 次
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5
The canonical answer to metastability queries always involves referring to articles written by the late, great, Peter Alfke. In particular, the XAPP094 appnote - don't worry about the age of it, the theory is still the same.
There are also numbers for some more recent families available - although I can't see anything for the 6 and 7 series as yet.
于 2012-08-22T11:42:57.643 回答