Test generation for designs with multiple clocks
Proceedings of the 40th annual Design Automation Conference
Scan Test Data Volume Reduction in Multi-Clocked Designs with Safe Capture Technique
ITC '02 Proceedings of the 2002 IEEE International Test Conference
Logic BIST for Large Industrial Designs: Real Issues and Case Studies
ITC '99 Proceedings of the 1999 IEEE International Test Conference
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Proceedings of the conference on Design, automation and test in Europe - Volume 2
Proceedings of the conference on Design, Automation and Test in Europe - Volume 1
Multi-Cycle Sensitizable Transition Delay Faults
VTS '06 Proceedings of the 24th IEEE VLSI Test Symposium
Scan Tests with Multiple Fault Activation Cycles for Delay Faults
VTS '06 Proceedings of the 24th IEEE VLSI Test Symposium
Improving Transition Delay Test Using a Hybrid Method
IEEE Design & Test
VLSI Test Principles and Architectures: Design for Testability (Systems on Silicon)
VLSI Test Principles and Architectures: Design for Testability (Systems on Silicon)
Delay Test Scan Flip-Flop: DFT for High Coverage Delay Testing
VLSID '07 Proceedings of the 20th International Conference on VLSI Design held jointly with 6th International Conference: Embedded Systems
An On-Chip Test Clock Control Scheme for Multi-Clock At-Speed Testing
ATS '07 Proceedings of the 16th Asian Test Symposium
Using Programmable On-Product Clock Generation (OPCG) for Delay Test
ATS '07 Proceedings of the 16th Asian Test Symposium
System-on-Chip Test Architectures: Nanometer Design for Testability
System-on-Chip Test Architectures: Nanometer Design for Testability
IEEE Transactions on Computer-Aided Design of Integrated Circuits and Systems
IEEE Transactions on Computer-Aided Design of Integrated Circuits and Systems
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This article presents a hybrid Automatic Test Pattern Generation (ATPG) technique using the staggered Launch-On-Shift (LOS) scheme followed by the one-hot launch-on-shift scheme for testing delay faults in a scan design containing asynchronous clock domains. Typically, the staggered scheme produces small test sets but needs long ATPG runtime, whereas the one-hot scheme takes short ATPG runtime but yields large test sets. The proposed hybrid technique is intended to reduce test pattern count with acceptable ATPG runtime for multimillion-gate scan designs. In case the scan design contains multiple synchronous clock domains, and each group of synchronous clock domains is treated as a clock group and tested using a launch-aligned or a capture-aligned LOS scheme. By combining these schemes together, we found the pattern counts for two large industrial designs were reduced by approximately 1.6X to 1.8X, while the ATPG runtime was increased by 40% to 50%, when compared to the one-hot clocking scheme alone.