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Automatic Test Program Generation Using Executing-Trace-Based Constraint Extraction for Embedded Processors

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3 Author(s)
Ying Zhang ; State Key Lab. of Comput. Archit., Inst. of Comput. Technol., Beijing, China ; Huawei Li ; Xiaowei Li

Software-based self-testing (SBST) has been a promising method for processor testing, but the complexity of the state-of-art processors still poses great challenges for SBST. This paper utilizes the executing trace collected during executing training programs on the processor under test to simplify mappings and functional constraint extraction for ports of inner components, which facilitate structural test generation with constraints at gate level, and automatic test instruction generation (ATIG) even for hidden control logic (HCL). In addition, for sequential HCL, we present a test routine generation technique on the basis of an extended finite state machine, so that structural patterns for combinational subcircuits in the sequential HCL can be mapped into the test routines to form a test program. Experimental results demonstrate that the proposed ATIG method can achieve good structural fault coverage with compact test programs on modern processors.

Published in:

Very Large Scale Integration (VLSI) Systems, IEEE Transactions on  (Volume:21 ,  Issue: 7 )

Date of Publication:

July 2013

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