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A Fault Tolerant Design Methodology for a FPGA-based Softcore Processor

作     者:P. Garcia T. Gomes F. Salgado J. Cabral P. Cardoso M. Ekpanyapong A. Tavares 

作者机构:Centro Algoritmi – University of Minho Portugal Asian Institute of Technology Thailand 

出 版 物:《IFAC Proceedings Volumes》 

年 卷 期:2012年第45卷第4期

页      面:145-150页

主  题:Fault Tolerance Field Programmable Gate Array Microprocessor Dynamic Reconfiguration 

摘      要:The susceptibility of digital systems to faults requires the implementation of Fault Tolerant architectures to ensure high-reliability and availability. Field Programmable Gate Arrays are especially sensitive to Single-Event Upsets and Single-Event Transients, since the configuration memory of the chip can be affected, resulting in permanent error; thus, special care must be taken when implementing Fault Tolerant architectures for FPGAs. This paper describes the architecture of a Fault Tolerant softcore processor using triplication of all units as well as using a parity protection scheme for on-chip caches, presenting the impact on area, clock frequency and I/O requirements of both implementations, targeting FPGAs. Experiments show a high fault tolerance and demonstrate the relationship of cache hit rates with fault propagation.

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