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A regular circuit structure called a Whirlpool PLA (WPLA) is proposed. It is suitable for the implementation of finite state machines as well as combinational logic. A WPLA is logically a four-level Boolean NOR network. By arranging the four logic arrays in a cycle, a compact layout is achieved. Doppio-ESPRESSO, a four-level logic minimization algorithm is developed for WPLA synthesis. No technology mapping, placement or routing is necessary for the WPLA. Area and delay trade-off is absent, because these two goals are usually compatible in WPLA synthesis.
Date of Conference: 10-14 Nov. 2002