Efficient Test Data Compression and Low Power Scan Testing for System-On-a-Chip(SOC)

SOC(System-On-a-Chip)에 있어서 효율적인 테스트 데이터 압축 및 저전력 스캔 테스트

  • 박병수 (상명대학교 컴퓨터시스템공학과) ;
  • 정준모 (한양사이버대학교 컴퓨터학과)
  • Published : 2005.02.01


Testing time and power consumption during testing System-On-a-Chip (SOC) are becoming increasingly important as the IP core increases in a SOC. We present a new algorithm to reduce the scan-in power and test data volume using the modified scan latch reordering. We apply scan latch reordering technique for minimizing the hamming distance in scan vectors. Also, during scan latch reordering, the don't care inputs in scan vectors are assigned for low power and high compression. Experimental results for ISCAS 89 benchmark circuits show that reduced test data and low power scan testing can be achieved in all cases.