Multiple Transition Model and Enhanced Boundary Scan Architecture to Test Interconnects for Signal Integrity

As the technology is shrinking toward 50 nm and the working frequency is going into multi gigahertz range, the effect of interconnects on functionality and performance of system-on-chips is becoming dominant. More specifically, distortion (integrity loss) of signals traveling on high-speedinterconnectscan no longerbe ignored. In this paper, we propose a new fault model, called multiple transition, and its corresponding test pattern generation mechanism. We also extend the conventional boundaryscan architectureto allow testing signal integrity in SoC interconnects. Our extended JTAG architecture collects and outputs the integrity loss information using the enhanced observation cells. The architecture fully complies with the JTAG standard and can be adopted by any SoC that is IEEE 1149.1 compliant.

• Type: Conference
• Year: 2003
• Where: ICCD
• Authors: Mohammad H. Tehranipour, Nisar Ahmed, Mehrdad Nourani
• Keywords: Hardware, ICCD 2003, Integrity Loss, JTAG Architecture Collects, Testing Signal Integrity