Reducing the Test Data Volume by Enhanced Compression Code

Because of the increased design complexity and advanced fabrication technologies, number of tests and corresponding test data volume increases rapidly. As the large size of test data volume is becoming one of the major problems in testing System on- a-Chip (SOC). Test data volume reduction is an important issue for the SOC designs. Several compression coding schemes had been proposed in the past. Run Length Coding was one of the most familiar coding methodologies for test data compression. Golomb coding was used in existing compression side. The compression ratio of golomb code was found to be lesser than the combined Alternative Variable Run-length code (AVR) and nine code compression (9C) methods. The proposed combined AVR and 9C codes are used for reducing the test data volume. The experiment is conducted for proposed methods using ISCAS'89 benchmark circuits. The experimental results shows that, the proposed method is highly efficient when compared with the existing methods. Citation: Devi Sowndarya.K.K, ; Kalamani.C ,; Dr.K.Paramasivan ,. "Reducing the Test Data Volume by Enhanced Compression Code." Global Research and Development Journal For Engineering : 452 - 457.