P. Nordholz, D. Treytnar, H. Grabinski, J. Otterstedt, D. Niggemeyer, U. Arz and T. W. Williams

Core Interconnect Testing Hazards

Abstract


The SIA Roadmap predicts a very aggressive path of technologies from 0.35 µm to 0.10 µm technology design. Increasing frequencies together with decreasing geometries lead to a number of issues which need to be examined. Testing is clearly one main issue. Another area of concern is that of signal integrity of the interconnects.
The interconnects must not only be analyzed with regard to opens and shorts but also with regard to the signal delays. In addition, it has to be considered that the signal delay (i.e. the time when the signal crosses the switching threshold of the following gate) on a certain line within a bus system depends on the set of input signals of all bus lines. Furthermore, hazards can occur. Both effects are due to coupling and can lead to an incorrect function of the whole circuit..


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