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ACTA AERONAUTICAET ASTRONAUTICA SINICA ›› 2014, Vol. 35 ›› Issue (12): 3392-3402.doi: 10.7527/S1000-6893.2014.0038

• Electronics and Control • Previous Articles     Next Articles

Method to Reliability Improvement of Chip Self-healing Hardware by Array Layout Reformation

ZHANG Zhai, WANG Youren   

  1. College of Automation Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China
  • Received:2014-01-06 Revised:2014-04-03 Online:2014-12-25 Published:2014-04-10
  • Supported by:

    National Natural Science Foundation of China (61202001)

Abstract:

For the purpose of improving reliability, a new structure and some new methods are raised in this article by array layout reformation. The traditional reliability model assumes that all cells are treated as fixed nodes, which is inconsistent with the implementation process. Actually, the inner modules of cell should always change with the layout of cellular array dynamically. The new reliability model is proposed after the detailed analysis of unit circuit resource consumption on two-dimensional array. The influence of layout parameters is analyzed in detail. Furthermore, block and hierarchical structure is proposed. The effectiveness to improve the reliability is demonstrated based on a case study. As a conclusion, designers can get the optimal layout conformation with different cell circuit situations and design modus. The parameter selection rules of block and hierarchical structure are summed up, and the general applicability of the methods, which are used to calculate the best layout structure are validated finally.

Key words: chip self-healing hardware, reliability, cellular array, layout structure optimization, reconfigurable, design guidelines

CLC Number: