On Thu, Jan 3, 2019 at 1:41 AM Luke Kenneth Casson Leighton lkcl@lkcl.net wrote:
Can I make a special request to include a T gate (transmission gate) in that list as it is a critical and little understood component of an efficient NxN crossbar.
Analog switches are also an important building block for any kind of switched capacitor discrete time analog filters.
Matrix form not butterfly style. Butterfly style crossbar is much higher number of gates than a T Gate style crossbar.
Can you reference to circuit diagrams that explain what "matrix form" and "butterfly stlye" might mean?
Also T gates make for significantly reduced logic cells although voltage is lost at each stage, buffers fix that. https://en.m.wikipedia.org/wiki/Transmission_gate
Quite a few nonstandard digital cell designs exist and can be used to simplify a circuit, but definitely not the design process, because you need to know when to use them and when not to use them.
Christoph
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