Configuration Self-Repair in Xilinx FPGAs

The usage of static random access memory-based field programmable gate arrays (FPGAs) on high-energy physics detectors is mostly limited by the sensitivity of devices to radiation-induced upsets in their configuration. In this paper, we describe a scrubber core designed for Xilinx FPGAs, based on co...

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Bibliographic Details
Published in:IEEE transactions on nuclear science 2018-10, Vol.65 (10), p.2691-2698
Main Authors: Giordano, Raffaele, Barbieri, Dario, Perrella, Sabrina, Catalano, Roberto, Milluzzo, Giuliana
Format: Article
Language:English
Subjects:
Benchmark testing
Configurations
Field programmable gate arrays
Field-programmable gate array (FPGA)
Gate arrays
Homology
Irradiation
Materials handling
multiple-bit upsets (MBUs)
proton
Proton irradiation
Protons
Radiation
Radiation effects
radiation testing
Random access memory
Redundancy
Scrubbers
single event effects
single event upsets
soft errors
Static random access memory
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Summary:The usage of static random access memory-based field programmable gate arrays (FPGAs) on high-energy physics detectors is mostly limited by the sensitivity of devices to radiation-induced upsets in their configuration. In this paper, we describe a scrubber core designed for Xilinx FPGAs, based on configuration redundancy. When no upsets happen in homologous redundant bits and the scrubber is functional, the adopted redundancy makes it possible to correct all the errors. In fact, the scrubber corrects its own configuration and the one pertaining to a given user design. We discuss the architecture and two implementations of the scrubber, corresponding to different flavors of triple modular redundancy. We report results from proton irradiation tests, which prove that our core can extend the lifetime of a benchmark circuit up to 290%.
ISSN:0018-9499
1558-1578
DOI:10.1109/TNS.2018.2868992