Crosstalk Fault Testing by Using Oscillation Ring Testing Methodology for Soc Interconnection Lines

The advance in IC processing technology rapidly reduces spacing between adjacent wires; which renders crosstalk fault an important source of anomaly in deep subcicrom VLSI. As a result, crosstalk fault detection should be an essential part in SOC testing. Although IEEE P1500 has been developed to test interconnects in SOC. this standard is not suitable for coupling fault testing. In this paper, we propose a new testing scheme, namely the oscillation ring testing. This method is very efficient for crosstalk fault detection, which is otherwise very difficult under traditional test scheme. We also propose a systematic way to find out oscillation rings and test patterns. We have conducted experiments on the proposed scheme with several test circuits consisting of ISCAS benchmarks, and the results show that crosstalk faults can be detected with a very small number of test patterns.