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Safe Asynchronous Sequential Circuits
May 1974 (vol. 23 no. 5)
pp. 494-500
R.S. Wickersham, Electronics Division, General Dynamics
A logic designer may inadvertently select the design equations in such a way that stable states other than those of the flow table are formed. During malfunctions, it is possible for the circuit to assume a set of stable states that are not members of the original flow table, causing improper action. In some cases, it is impossible for the circuit to reassume the stable states of the flow table, creating a "critical situation." A safe circuit is one that is free of the critical situation.
Index Terms:
Asynchronous sequential circuits, reliable sequential circuits, safe circuits, sequential circuit design, state assignment.
Citation:
R.S. Wickersham, G.K. Maki, "Safe Asynchronous Sequential Circuits," IEEE Transactions on Computers, vol. 23, no. 5, pp. 494-500, May 1974, doi:10.1109/T-C.1974.223972
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