A Branch-&-Bound Test-Access-Mechanism Optimization Method for Multi-$V-{\mathrm{ dd}}$ SoCs

Journal Article (Journal Article)

The use of multiple voltage levels introduces new challenges for testing multi-Vdd systems-on-chip (SoCs). Timedivision-multiplexing (TDM) tackles many of these challenges and offers very effective test-schedules. However, the effectiveness of TDM for minimizing test time depends on the test-accessmechanism (TAM) in the SoC. Single-Vdd TAM optimization techniques consider neither the highly constrained test environment of multi-Vdd SoCs nor the benefits provided by TDM, therefore they are not suitable for multi-Vdd SoCs. In this paper, we propose the first TAM optimization technique for multi-Vdd SoCs. The proposed method exploits unique scheduling opportunities and flexibility offered by TDM, and by the means of a branch-&-bound approach, it quickly identifies the most effective TAM configurations. Experiments using large benchmark SoCs as well as SoCs from industry highlight the benefits of the proposed technique on multi-Vdd designs, for both single-site and multisite test applications.

Full Text

Duke Authors

Cited Authors

  • Vartziotis, F; Kavousianos, X; Georgiou, P; Chakrabarty, K

Published Date

  • November 1, 2017

Published In

Volume / Issue

  • 36 / 11

Start / End Page

  • 1911 - 1924

International Standard Serial Number (ISSN)

  • 0278-0070

Digital Object Identifier (DOI)

  • 10.1109/TCAD.2017.2664062

Citation Source

  • Scopus