Efficient modular design of TSC checkers for m-out-of-2m codes

Paschalis, A. M. ; Nikolos, D. ; Halatsis, Constantin (1986)

Book chapter

A new design method of TSC m-out-of-2m code checkers is presented. The design is composed basically of two full-adder/half-adder trees, each summing-up the one's of m input lines, and a k-variable 2-pair two-rail code tree that compares the outputs of the two adder trees. The only modules used are full-adders, half-adders and two-rail T2. This method is well suited for VLSI MOS implementation and compared to previous methods it results in significant circuit cost reduction and smaller test set, without sacrificing performance. At the same time the proposed design has all added advantages of a modular design.

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