Abstract
This paper presents aproposal of a new optical multi-context blind scrubbing that can not only increase the soft-error tolerance of the configuration memory of field programmable gate arrays (FPGAs) but also support high-speed dynamic reconfiguration suitable for accelerating FPGA operations. The optical multi-context blind scrubbing operation uses a holographic memory as a soft-error free radiation-hardened external memory. It exploits its two-dimensional large-bandwidth optical bus. Optical multi-context blind scrubbing operation was demonstrated with four configuration contexts. The soft-error tolerance of the scrubbing operation was evaluated using a radiation tolerance experiment using two 4-MBq Americium-241 alpha particle sources. Results show the worst case mean time to repair (MTTR) of the scrubbing operation as 560 ns, which can realize sufficient soft-error tolerance in radiation-rich space environments.
Highlights
Field programmable gate arrays (FPGAs) are used frequently for space embedded systems because of their reconfigurability [1]–[3]
This paper presents a proposal of a new optical multi-context blind scrubbing that can increase the soft-error tolerance of the configuration memory of field programmable gate arrays (FPGAs) and support high-speed dynamic reconfiguration suitable for accelerating FPGA operations
This paper has presented a proposal for optical high-speed multi-context scrubbing that can increase the soft-error tolerance of configuration memory on programmable gate arrays and support high-speed dynamic reconfiguration suitable for accelerating operations on the programmable gate arrays
Summary
Field programmable gate arrays (FPGAs) are used frequently for space embedded systems because of their reconfigurability [1]–[3]. To decrease the soft-error frequency, various scrubbing methods have been proposed to refresh the configuration memory of an FPGA with a single configuration context [7]–[11]. With blind scrubbing methods for FPGAs, all data of the configuration memory are cyclically refreshed with a single configuration context on an external flash memory with no error detection mechanism. An MTTR of tens of microseconds can be achieved with scrubbing operations by which a partial reconfiguration is executed based on a single configuration context on an external flash memory each time a soft error is detected using a soft-error detection mechanism [9]–[11]. If dynamic reconfiguration could be executed based on numerous configuration contexts with no overhead while doing a scrubbing operation, both the performance and soft-error tolerance of FPGAs could be increased. This paper describes a proposal of a new multi-context scrubbing method [21] and results of a demonstration of the first Am241 alpha particle radiation tolerance experiment for an optical multi-context blind scrubbing operation
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
