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We present an integer linear programming-based approach for solving the logic reconvergence problem in skewed logic circuits with minimal logic duplication cost. A simplification technique is applied to reduce the complexity of the ILP problem greatly so that the run time is more affordable. Experimental results show that an average of 18% of original gates are duplicated in skewed logic circuits, whereas 65% in Domino logic circuits are duplicated. The average power saving over Domino logic circuits is 40.9%.
Date of Conference: 21-24 Jan. 2003