Reduction of SOC test data volume, scan power and testing time using alternating run-length codes
Proceedings of the 39th annual Design Automation Conference
Low-power scan testing and test data compression for system-on-a-chip
IEEE Transactions on Computer-Aided Design of Integrated Circuits and Systems
LFSR-Reseeding Scheme Achieving Low-Power Dissipation During Test
IEEE Transactions on Computer-Aided Design of Integrated Circuits and Systems
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Power consumption for test vectors is a major problem in SOC testing using BIST. A new low power testing methodology to reduce the peak power and average power associated with scan-based designs in the deterministic BIST is proposed. This new method utilizes an auxiliary LFSR to reduce the amount of the switching activity in the deterministic BIST. Excessive transition detector (ETD) monitors the number of transitions in the test pattern generated by LFSR and the low transition pattern is generated for excessive transition region using an auxiliary LFSR. Experimental results for the larger ISCAS 89 benchmarks show that reduced peak power and average power can indeed be achieved with little hardware overhead compared to previous schemes.