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Mitigation of cache memory using an embedded hard-core PPC440 processor in a Virtex-5 Field Programmable Gate Array.
Content Provider | Semantic Scholar |
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Author | Walter, Mark E. |
Copyright Year | 2010 |
Abstract | Sandia National Laboratories is currently developing new processing and data communication architectures for use in future satellite payloads. These architectures will leverage the flexibility and performance of state-of-the-art static-random-accessmemory-based Field Programmable Gate Arrays (FPGAs). One such FPGA is the radiation-hardened version of the Virtex-5 being developed by Xilinx. However, not all features of this FPGA are being radiation-hardened by design and could still be susceptible to on-orbit upsets. One such feature is the embedded hard-core PPC440 processor. Since this processor is implemented in the FPGA as a hard-core, traditional mitigation approaches such as Triple Modular Redundancy (TMR) are not available to improve the processor’s on-orbit reliability. The goal of this work is to investigate techniques that can help mitigate the embedded hard-core PPC440 processor within the Virtex-5 FPGA other than TMR. Implementing various mitigation schemes reliably within the PPC440 offers a powerful reconfigurable computing resource to these node-based processing architectures. This document summarizes the work done on the cache mitigation scheme for the embedded hardcore PPC440 processor within the Virtex-5 FPGAs, and describes in detail the design of the cache mitigation scheme and the testing conducted at the radiation effects facility on the Texas A&M campus. |
File Format | PDF HTM / HTML |
Alternate Webpage(s) | https://prod-ng.sandia.gov/techlib-noauth/access-control.cgi/2010/100443.pdf |
Alternate Webpage(s) | http://prod.sandia.gov/techlib/access-control.cgi/2010/100443.pdf |
Language | English |
Access Restriction | Open |
Content Type | Text |
Resource Type | Article |