Synchronization overhead in SOC compressed test

  • Authors:
  • Paul Theo Gonciari;Bashir Al-Hashimi;Nicola Nicolici

  • Affiliations:
  • Electronic Systems Design Group, School of Electronics and Computer Science, University of Southampton, Southampton SO17 1BJ, U.K.;Electronic Systems Design Group, School of Electronics and Computer Science, University of Southampton, Southampton SO17 1BJ, U.K.;Computer-Aided Design and Test Research Group, Department of Electrical and Compute Engineering, McMaster University, Hamilton, ON L8S 4K1, Canada

  • Venue:
  • IEEE Transactions on Very Large Scale Integration (VLSI) Systems
  • Year:
  • 2005

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Abstract

Test data compression is an enabling technology for low-cost test. Compression schemes however, require communication between the system under test and the automated test equipment. This communication, referred to in this paper as synchronization overhead, may hinder the effective deployment of this new test technology for core-based systems-on-chip. This paper analyzes the sources of synchronization overhead and discusses the different tradeoffs, such as area overhead, test time and automatic test equipment extensions. A novel scalable and programmable on-chip distribution architecture is proposed, which addresses the synchronization overhead problem and facilitates the use of low cost testers for manufacturing test. The design of the proposed architecture is introduced in a generic framework, and the implementation issues (including the test controller and test set preparation) have been considered for a particular case.