Title
Graceful Degradation of Reconfigurable Scan Networks
Abstract
Modern integrated circuits (ICs) include thousands of on-chip instruments to ensure that specifications are met and maintained. Scalable and flexible access to these instruments is offered by reconfigurable scan networks (RSNs), e.g., IEEE Std. 1687. As RSNs themselves can become faulty, there is a need to exclude and bypass faulty parts so that remaining instruments can be used. To avoid keeping track and updating description languages for each individual IC, we propose an on-chip hardware block that makes adjustments according to the fault status of a particular IC. We show how this block enables test for faulty scan chains, localization of faulty scan chains, and repair by excluding faulty scan chains. We made implementations and experiments to evaluate the overhead in terms of transported data and area.
Year
DOI
Venue
2021
10.1109/TVLSI.2021.3076593
IEEE Transactions on Very Large Scale Integration (VLSI) Systems
Keywords
DocType
Volume
Diagnosis,IEEE Std. 1687,IEEE Std. P1687.1,localization,repair,test
Journal
29
Issue
ISSN
Citations 
7
1063-8210
0
PageRank 
References 
Authors
0.34
0
3
Name
Order
Citations
PageRank
Erik G. Larsson110189605.81
Zehang Xiang200.68
Prathamesh Murali301.69