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Technology mapping for high-performance static CMOS and pass transistor logic designs

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3 Author(s)
Yanbin Jiang ; Dept. of Electr. & Comput. Eng., Iowa State Univ., Ames, IA, USA ; Sapatnekar, S.S. ; Bamji, C.

Two new techniques for mapping circuits are proposed in this paper. The first method, called the odd-level transistor replacement (OTR) method, has a goal that is similar to that of technology mapping, but without the restriction of a fixed library size and maps a circuit to a virtual library of complex static CMOS gates. The second technique, the static CMOS/pass transistor logic (PTL) method, uses a mix of static CMOS and PTL to realize the circuit and utilizes the relation between PTL and binary decision diagrams. The methods are very efficient and can handle all of the ISCAS'85 benchmark circuits in minutes. A comparison of the results with traditional technology mapping using SIS on different libraries shows an average delay reduction above 18% for OTR, and an average delay reduction above 35% for the static CMOS/PTL method, with significant savings in the area.

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Very Large Scale Integration (VLSI) Systems, IEEE Transactions on  (Volume:9 ,  Issue: 5 )