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IEICE TRANSACTIONS on transactions

Hierarchical Decomposition for Circuit Simulation by Direct Method

Masakatsu NISHIGAKI, Nobuyuki TANAKA, Hideki ASAI

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Summary :

In the circuit simulation by the direct method, it is a very important problem how to solve efficiently large scale sparse linear equations. For this problem, several network tearing techniques have been studied. This paper describes an automatic system for hierarchical decomposition of a large scale network. This system has a graphic circuit editor GRACE. GRACE enables to input a large scale circuit hierarchically, and to translate inputted circuit diagrams automatically into the hierarchical structural description language HAL. Furthemore, this system partitions the circuit hierarchically into gate level circuits, utilizing the HAL netlist. In this research, first we discuss the hierarchical tearing algorithm for large scale integrated circuits. Finally, we apply this system to TTL networks, and verify its availability by estimating the amount of computations required for triangular factorization of circuit matrices.

Publication
IEICE TRANSACTIONS on transactions Vol.E73-E No.12 pp.1948-1956
Publication Date
1990/12/25
Publicized
Online ISSN
DOI
Type of Manuscript
Special Section PAPER (Special Issue on the 3rd Karuizawa Workshop on Circuits and Systems)
Category
Nonlinear Circuits and Simulation

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