Self-reference Scrubber for TMR Systems Based on Xilinx Virtex FPGAs

  • Ignacio Herrera-Alzu
  • Marisa López-Vallejo
Part of the Lecture Notes in Computer Science book series (LNCS, volume 6951)

Abstract

SRAM-based FPGAs are sensitive to radiation effects. Soft errors can appear and accumulate, potentially defeating mitigation strategies deployed at the Application Layer. Therefore, Configuration Memory scrubbing is required to improve radiation tolerance of such FPGAs in space applications. Virtex FPGAs allow runtime scrubbing by means of dynamic partial reconfiguration. Even with scrubbing, intra-FPGA TMR systems are subjected to common-mode errors affecting more than one design domain. This is solved in inter-FPGA TMR systems at the expense of a higher cost, power and mass. In this context, a self-reference scrubber for device-level TMR system based on Xilinx Virtex FPGAs is presented. This scrubber allows for a fast SEU/MBU detection and correction by peer frame comparison without needing to access a golden configuration memory.

Keywords

SRAM-based FPGA EDAC SEU MBU SEFI TMR Scrubber Scrubbing Readback Reconfiguration Configuration Memory Reliability 

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Copyright information

© Springer-Verlag Berlin Heidelberg 2011

Authors and Affiliations

  • Ignacio Herrera-Alzu
    • 1
  • Marisa López-Vallejo
    • 1
  1. 1.Department of Electronics EngineeringE.T.S.I. Telecomunicación Universidad Politécnica de MadridMadridSpain

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