On-chip timing-measurement units are needed because accessibility to internal nodes in SoCs is very limited, and performing time interval measurements using automatic test equipment is very difficult and expensive. This article presents a parametric timing measurement solution, which uses self-timed techniques and delivers high linearity and improved accuracy, at low risk of measurement error.
Citation:
Ming-Jun Hsiao, Jing-Reng Huang, Tsin-Yuan Chang, "A Built-In Parametric Timing Measurement Unit," IEEE Design and Test of Computers, vol. 21, no. 4, pp. 322-330, July/Aug. 2004, doi:10.1109/MDT.2004.22