Parallélisme et Logique Floue Appliqués Aux outils de la CAO en Microélectronique

Abstract

Since the arrival of the VLSI circuits, the complexity of the established circuits is not limited any more by technology, but by the process of design. An originator cannot carry out any more certain circuits without the assistance of tools of CAD so much the complexity of the circuits is tall, and this for several reasons: the time of design, the optimization and the stability of the circuits. Our work lies within the scope of the automation of the design of the integrated circuits, starting from the physical phase which includes the placement of the cells and the routing, and application of fuzzy logic and parallelism to these tools. Indeed, we took in consideration, explicitly, two significant aspects: presence of multiple contradictory objectives and use of expert knowledge in the decision-making. These aspects can be treated by the technique based on the Fuzzy set theory. Then, we introduced the concept of parallelism and its application to the design of the integrated circuits for the phase of placement and routing.