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M. Schütz, F. Huemer, A. Steininger:
"A Practical Comparison of 2-Phase Delay Insensitve Communication Protocols";
Vortrag: Austrochip Workshop on Microelectronics, Wien; 28.09.2015; in: "Austrochip Workshop on Microelectronics", (2015), 6 S.

As modern ASIC technologies suffer from substantial
delay uncertainties, delay insensitive (DI) communication
protocols are receiving increasing attention. Among these, the
more energy-saving 2-phase protocols are most attractive. In
the literature such protocols are widely covered already, with
Level-Encoded-Dual-Rail (LEDR), Level-Encoded-Transition-
Signalling (LETS) and Transition Encoding (TranEnc). For the
designer, however, it remains difficult to pick the right one, as
the discussions in the literature are restricted to the respective
protocol at hand, and implementations for the required
interfaces are often missing. This paper provides a thorough
comparison of existing DI 2-phase protocols with respect to
speed, power and coding efficiency, that also encompasses the
practical implementation. We propose efficient solutions for
the required completion detection and conversion circuits and
compare their static power- and dynamic energy consumptions
as well as the conversion times through Spice simulations.