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FPGA器件在空间遥感相机中应用越来越广泛,基于SRAM的FPGA必须配备PROM芯片,用以存放FPGA的编程数据,每次上电都需要重新加载配置,但受各种因素的影响,程序加载配置并不是每次都能成功。阐述了有关FPGA的配置过程,分析了影响配置的各个因素,并提出相应的设计优化措施。出现配置失败的电路,经设计优化后未曾出现配置失败。作为航天任务,遥感相机中绝不应出现FPGA配置失败的状态,为了提高上电配置的可靠性,提出了监测多个I/O信号电路方案,利用可靠性高的反熔丝FPGA来监测需要配置的FPGA,经数千次加载试验,FPGA配置成功率为100%,该方案对遥感相机更好地应用FPGA具有一定的参考价值。
FPGA devices are more and more widely used in space remote sensing cameras. SRAM-based FPGAs must be equipped with PROM chips to store FPGA programming data. Each power-on requires reloading the configuration. However, due to various factors, program loading Configuration is not always successful. Described the FPGA configuration process, analysis of the various factors that affect the configuration, and put forward the appropriate design optimization measures. Circuit configuration failed, the design has been optimized without configuration failure. As a space mission, remote sensing cameras should never fail in the configuration of the FPGA. In order to improve the reliability of the power-on configuration, a scheme of monitoring multiple I / O signal circuits is proposed, and a reliable anti-fuse FPGA is used to monitor the needs Configuration of the FPGA, after thousands of loading test, FPGA configuration success rate of 100%, the program of remote sensing cameras better application of FPGA has a certain reference value.