SMJ320C6415的高可靠程序加载方法

High-reliability Program Loading Method for SMJ320C6415

摘要:

针对航天产品在轨期间可擦除的磁性随机存取存储器（magnetic random access memory，MRAM）存在单粒子翻转(single-event upset，SEU)的问题，提出了一种数字信号处理器（DSP）芯片SMJ320C6415的高可靠程序加载方法。该方法采用多重冗余设计，在MRAM中备份多个DSP加载程序和用户程序，并通过三选二多数表决以剔除发生单粒子翻转的程序。试验结果表明该方法提高了DSP程序加载的可靠性和可维护性。

Abstract:

To address the single-event upset (SEU) issue in erasable magnetic random access memory (MRAM) of aerospace products during the orbital operation，a high-reliability program loading method for DSP chip SMJ320C6415 was proposed.The method employed a multiple-redundancy design that stored backup copies of both DSP loading programs and user programs in MRAM,incorporating a two-out-of-three majority voting mechanism to eliminate programs corrupted by SEU.The experimental results show that the method greatly improves the reliability and maintainability of DSP programs loading.