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Verification of Analog/Mixed-Signal Circuits Using Labeled Hybrid Petri Nets

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6 Author(s)
Scott Little ; Freescale Semiconductor, Inc., Austin, TX, USA ; David Walter ; Chris Myers ; Robert Thacker
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Mixed-signal designs integrate digital and analog circuits which complicates the already difficult verification problem. This paper presents a model, labeled hybrid Petri nets (LHPNs), that is developed to model this heterogeneous set of components. To support formal verification, this paper presents an efficient zone-based state space exploration algorithm for LHPNs. This algorithm uses a process known as warping which allows zones to describe continuous variables changing at variable rates. Finally, this paper describes the application of this algorithm to analog/mixed-signal circuit examples.

Published in:

IEEE Transactions on Computer-Aided Design of Integrated Circuits and Systems  (Volume:30 ,  Issue: 4 )