Research of the Logic Chip Boolean Relationship Extracted Ways Based on Limited Waveform Space

摘要

Aiming at the technique crux of system failure testing and function reconstruction, we carry on a research to the distilling method of the Boolean relation data. First, start with the analysis to the working wave character of target chip in the waveform confined space of system, and then on this foundation, the corresponding logic relation expression between signals of different logic types is given. While aiming at the combination logic waveform, and also integrating with the analysis to the fixed time relation of the waveform and the feature of its waveform data, we have put forward and carried out the logic relation distilling algorithm of the combination circuit signals based on credibility interval. While aiming at the timing logic waveform and on the foundation of the analysis to the different timing logic types, as well as the analysis to the waveform timing feature, we have put forward and carried out the logic relation distilling algorithm of the timing circuit signals based on waveform decomposition. Through the extraction of corresponding logic relation between different signals, the implicit logic relation of the circuit inner is translated into the limited set value of the logic relation expression which the logic synthesis can identify. And then from the angle of corresponding relation of the different signal logic values, the logic function of circuit is described.