Re-optimization Algorithm for Wrapper Scan Chains Balance Based on Twice-Assigned Method Using Dynamic Adjustment and Mean Value

摘要

Testing time of System on Chip (SoC) based on intellectual property (IP) has already become the bottleneck for the development of SoC. A new wrapper scan chain balance algorithm is proposed to minimize IP-core testing time. The balance algorithm is to find the standard-chain through the adjustment value and the mean-chain through the mean value. All the internal scan chains can be divided into two parts according to the length of standard-chain L: the scan chain set S≥ within the length no less than L and the remaining part S