An asynchronous unit delay is an n input n output of the input n-tuple prior to the last inlput change. It asynchronous sequential circuit in which the present value of the will then be shown that every asynchronous definite flow output n-tuple is equal to the value of the input n-tuple prior to the last input change. This paper considers the problem of determining ablecan brizeday a fee bac r ...

In this work we develop a temporal logic with fixpoints for distributed processes or distributed systems. Standard temporal logics refer to sequential processes (execution sequences) of distributed systems. Expressive temporal operators such as “Until” can be expressed as fixpoints of formulae involving only the simple “Next” modality. Fixpoint logics for sequential processes are known to be ex...

Delay-Insensitive Sequential Processes is a structured, parallel programming language. It facilitates the clear, succinct and precise specification of the way an asynchronous logic block is to interact with its environment. Using the tool di2pn, such a specification can be automatically translated into a Petri net. Using the tool petrify, the net can be automatically validated (for freedom from...

An asynchronous circuit, or self-timed circuit, is a sequential digital logic circuit which is not enabled by a global clock signal. Instead of that, they often use signals that indicate completion of operations and instructions, specified by handshaking or simple data transfer protocols. This type is contrasted with a synchronous logic circuit where changes to the output signal values are trig...

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A resurgence of interest in asynchronous VLSI circuits is occurring because of their potential for low power consumption, design flexibility and the absence of the clock skew problem. In this paper, an approach to the design of asynchronous sequential circuits for random pattern testability based on the micropipeline design style is described. The test procedure for such asynchronous sequential...

This paper is aimed at generation of automated test pattern for asynchronous circuits based on genetic algorithm. Asynchronous circuits without global clocks are hard to test due to the lack of testing techniques. The testing of asynchronous design involves basic element like C-element, completion detector in handshake controller and logic design. The main contribution is to generate optimized ...

Synchronous VLSI design is approaching a critical point, with clock distribution becoming an increasingly costly and complicated issue and power consumption rapidly emerging as a major concern. The last decade has witnessed a resurgence of interest in asynchronous logic which promises to liberate digital design from the inherent problems of synchronous systems. This activity has revealed a need...