System Design of On-orbit Anti-SEU Based on XC7V690T
Aiming at the problem that the core industrial SRAM-based field programmable gate array(FPGA)chip XC7V690T has the weak anti-irradiation capability and risk of single-event upsets(SEU)during the periods of on-orbit operation,in order to im-prove the on-orbit anti-SEU capability of industrial SRAM-based FPGA chip XC7V690T and the flexibility of configuration file for modification,an on-orbit anti-SEU system architecture based on XC7V690T chip is designed.The hardware architecture is mainly composed of XC7V690T SRAM-based FPGA chip,AX500 anti-fuse FPGA chip and multiple FLASH chips.The software architec-ture mainly includes XC7V690T chip configuration management and monitoring management on AX500 anti-fuse FPGA,the autono-mous monitoring and maintenance on configuration RAM resource are achieved in XC7V690T chip by calling the inner core soft error mitigation(SEM)IP On-orbit test verification results show that based on industrial SRAM-based FPGA chip,the SEM error correc-tion of the spacecraft communicator is carried out successfully during the periods of on-orbit operation,and the spacecraft communica-tor is running normally in orbit,the communication link is stable,which meets the need of application,the test results show that the system architecture can effectively improve the anti-SEU capability of XC7V690Tchip,which can provide a reference of anti-SEU de-sign for other SRAM-based FPGA.
万方数据
维普
