RunBasedReordering: A Novel Approach for Test Data Compression and Scan Power

As the large size of test data volume is becoming one of the major problems in testing System-on-a-Chip (SoC), several compression coding schemes have been proposed. Extended frequency-directed run-length (EFDR) is one of the best coding compression schemes. In this paper, we present a novel algorithm named RunBasedReordering(RBR), which is based on EFDR codes. Three techniques have been applied to this algorithm: scan chain reordering, scan polarity adjustment and test pattern reordering. The experiment results show that the test data compression ratio is significantly improved and scan power consumption is dramatically reduced. Moreover, our algorithm can be easily integrated into the existing industrial flow with little area penalty.

• Type: Conference
• Year: 2007
• Where: ASPDAC
• Authors: Hao Fang, Chenguang Tong, Xu Cheng
• Keywords: ASPDAC 2007, Coding Compression Schemes, Compression Coding Schemes, Hardware, Test Data