Off-line Testing of Crosstalk Induced Glitch Faults in NoC Interconnects

Crosstalk induced faults, like delay faults and glitch faults, are becoming important to test for high density SoCs operating at high clock speeds. In this paper, the authors propose a methodology for at-speed testing of glitch faults in links connecting two distinct clock domains in a SoC or a NoC system. The basic idea is to try to create conditions using maximum number of aggressors to induce a glitch in the link to be tested for faults and use a latch to record this glitch. The authors illustrate our ideas for testing glitch faults in handshaking signals used for communication between two NoC switches. BIST structure for off-line testing of these faults is also briefly described