Reducing control bit overhead for X-masking/X-canceling hybrid architecture via pattern partitioning

Jin Hyun Kang, Nur A. Touba, Joon Sung Yang

Research output: Chapter in Book/Report/Conference proceedingConference contribution

6 Citations (Scopus)

Abstract

An X-masking scheme prevents unknown (X) values from shifting into an output response compactor, whereas an X-canceling MISR methodology allows X's to enter the compactor, but then cancels them out through selective XORing. However, both approaches require significantly high volume of the control bits to remove X values to generate X-free output signatures. This paper proposes a method to reduce the control bit overhead by combining X-masking and X-canceling methodologies and exploiting the fact that unknown values tend to have high correlation in the scan cells. In this paper, correlation is considered across whole patterns in order to enhance reuse of control bits. The proposed hybrid method of X-canceling and X-masking reduces test time without losing fault coverage. The experimental results show that the proposed method significantly reduces control bits and test time compared to a conventional X-canceling MISR methodology.

Original languageEnglish
Title of host publicationProceedings of the 53rd Annual Design Automation Conference, DAC 2016
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781450342360
DOIs
Publication statusPublished - 2016 Jun 5
Event53rd Annual ACM IEEE Design Automation Conference, DAC 2016 - Austin, United States
Duration: 2016 Jun 52016 Jun 9

Publication series

NameProceedings - Design Automation Conference
Volume05-09-June-2016
ISSN (Print)0738-100X

Conference

Conference53rd Annual ACM IEEE Design Automation Conference, DAC 2016
CountryUnited States
CityAustin
Period16/6/516/6/9

All Science Journal Classification (ASJC) codes

  • Computer Science Applications
  • Control and Systems Engineering
  • Electrical and Electronic Engineering
  • Modelling and Simulation

Fingerprint Dive into the research topics of 'Reducing control bit overhead for X-masking/X-canceling hybrid architecture via pattern partitioning'. Together they form a unique fingerprint.

Cite this