Optimizing Components of Multi-Module Systems Based on don’t Care Input Sequences

In this paper, we use a window approach when optimizing Finite State Machine (FSM) components of a multi module system. Given a window with a loop-free binary composition of complete deterministic FSMs, we construct a partial FSM for the tail component FSM such that any reduced form of this partial FSM can replace the tail component preserving the composition behaviour. There are a number of cases when using a partial network equivalent instead of the initial component FSM allows to simplify the corresponding logic circuit with respect to the number of gates and path length between primary inputs and outputs.