supported by the National Natural Science Foundation of China (Grant Nos. 60633060, 60803031, 61006017);the National Basic Research Program of China (Grant No. 2005CB321604);the National High-Tech Research & Development Program of China (Grant Nos. 2007AA01Z107, 2007AA01Z113, 2007AA01Z109, 2009AA01Z129);the National Science Foundation of China (Grants Nos. 60425203, 60910003);the Key Laboratory of Computer System and Architecture, ICT, CAS (Grant No. ICT-ARCH200902);China Postdoctoral Science Foundation (Grant No. 20100470014)
Test power of VLSI systems has become a challenging issue nowadays. The scan shift power dominates the average test power and restricts clock frequency of the shift phase, leading to excessive thermal accumulation and...