Mixed Mode Circuit Simulation Using Dynamic Network Separation and Selective Trace

Masakatsu NISHIGAKI  Nobuyuki TANAKA  Hideki ASAI  

IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences   Vol.E77-A   No.3   pp.454-460
Publication Date: 1994/03/25
Online ISSN: 
Print ISSN: 0916-8508
Type of Manuscript: Special Section PAPER (Special Section on the 6th Karuizawa Workshop on Circuits and Systems)
Category: Modeling and Simulation
mixed mode circuit simulation,  dynamic partitioning,  network separation,  latency,  selective trace,  

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For the efficient circuit simulation, several direct/relaxation-based mixed mode simulation techniques have been studied. This paper proposes the combination of selective trace, which is well-known in the logic simulation, with dynamic network separation. In the selective trace method, the time points to be analyzed are selected for each subcircuit. Since the separation technique enables the analysis of each subcircuit independently, it is possible to skip solving the latent subcircuits, according to selective trace. Selecting the time points in accordance with activity of each subcircuit is analogous to multirate numerical integration technique used in the waveform relaxation algorithm.