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WTL (Wave Threshold Logic) Primer

47 pointsby throwaway000002about 9 years ago

3 comments

theszabout 9 years ago
This is good old asynchronous logic with separate no-data state, renamed (probably, for patent reasons).
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finfet1about 9 years ago
haha... self timed domino .. published like 10-15 years ago already.<p>this won&#x27;t work for many reasons that everyone in the industry already knows. High fan-out back to many gates that are spatially distant means that you need not only complex routing, but also complex sizing of the feedback inverter. So.. this won&#x27;t even fit in with automatic place and route of complex cells. And good luck doing this custom in an efficient way such as making it a semi standard cell library.<p>Furthermore, the feedback inverter only works in simple cases such as the cascaded gates you show, when the switching of the one gate depends only on one fan-out. If it depends on more than one fan-out, the feedback inverter essentially requires another logic gate in front of it, which simply just blew up your entire circuit size and any power savings you were attempting.
FullyFunctionalabout 9 years ago
This is just NULL-Convention Logic, renamed so they could trademark it. I mentioned NCL in a comment under the micropipelines <a href="https:&#x2F;&#x2F;news.ycombinator.com&#x2F;item?id=11425533" rel="nofollow">https:&#x2F;&#x2F;news.ycombinator.com&#x2F;item?id=11425533</a>