Configuration memory scrubbing is an essential component of any reliable FPGA-based system used in harsh radiation environments like space. Configuration scrubbing involves the periodic writing of configuration data onto the FPGA to repair configuration upsets that occur within the FPGA due to high-energy ionizing radiation. Configuration scrubbing typically requires external memory and hardware to manage the scrubbing process. This paper presents a novel configuration scrubber for the Xilinx 7-Series FPGAs that requires less external circuitry than traditional scrubbers by exploiting the on-chip Frame ECC and internal scan capability. By exploiting the on-chip features, this scrubber operates faster than traditional scrubbers and with less external hardware. The effectiveness of this scrubber was validated with a radiation test at the Los Alamos Neutron Scattering Center (LANSCE). This scrubber will be used on a Xilinx 7-Series based space processor and a high-energy physics experiment.
Hybrid Configuration Scrubbing for Xilinx 7-Series FPGAs
FPGAs and Parallel Architectures for Aerospace Applications ; Chapter : 7 ; 91-101
2016-01-01
11 pages
Article/Chapter (Book)
Electronic Resource
English
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