Title :
Switch-level modeling of feedback faults using global oscillation control
Author_Institution :
Dept. of Comput. Eng., Chalmers Univ. of Technol., Goteborg, Sweden
fDate :
27 Apr-1 May 1997
Abstract :
To simulate the effects of feedback bridging faults accurately, it is necessary to take into account both the conflict between signals of opposite logic values and the oscillation or asynchronous behavior induced by global feedback loops. This papers presents a method for detecting and processing global feedback dynamically in logic simulation. The problem of asynchronous behavior in feedback paths with an even number of inversions is solved by breaking the feedback and evaluating the possible stable states separately. Simulation experiments show that the uncertainty in fault diagnosis can be significantly reduced by incorporating the proposed technique for feedback analysis
Keywords :
circuit feedback; circuit oscillations; fault diagnosis; logic testing; asynchronous behavior; bridging fault; fault diagnosis; feedback loop; global oscillation control; logic simulation; switch-level model; Analytical models; Circuit faults; Circuit simulation; Computational modeling; Fault diagnosis; Feedback circuits; Feedback loop; Logic; State feedback; Uncertainty;
Conference_Titel :
VLSI Test Symposium, 1997., 15th IEEE
Conference_Location :
Monterey, CA
Print_ISBN :
0-8186-7810-0
DOI :
10.1109/VTEST.1997.599460
