[Libre-silicon-devel] Status request: ADC

Christoph Maier christoph.maier at ieee.org
Thu Jan 3 03:32:04 CET 2019

On Thu, Jan 3, 2019 at 1:41 AM Luke Kenneth Casson Leighton
<lkcl at 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.

> crowd-funded eco-conscious hardware: https://www.crowdsupply.com/eoma68
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