一种高可靠的星载多核DSP加载方式及实现  

A highly reliable loading method and implementation of spaceborne multi-core DSP

作　　者：璩泽旭[1] 王鹏[1] 孙钰林[1] QU Zexu;WANG Peng;SUN Yulin(China Academy of Space Technology(Xi’an),Xi’an 710000,China)

机构地区：[1]中国空间技术研究院西安分院,西安710000

出　　处：《空间电子技术》2022年第2期83-87,共5页Space Electronic Technology

摘　　要：为了应对遥感卫星复杂的智能处理应用需求,单核的数字信号处理器已无法满足实时性要求,而多核DSP处理性能更高,可以满足卫星应用需求。提出了一种多核DSP加载的高可靠方法,利用FPGA对存放的Nor Flash中程序进行纠错回写,应对空间单粒子翻转影响,可以保障卫星可靠运行,方法新颖、可靠。TMS320C6678是基于KeyStone结构的高性能多核浮点DSP,详细介绍了TMS320C6678的加载模式和流程,并提出基于EMIF16的Nor Flash高可靠异构加载方式,以及程序Bootloader。经测试验证,TMS320C6678能够稳定可靠运行。该方法支持在轨可重构,适应目前快速发展的星上智能处理发展趋势。In order to respond to the complex intelligent processing application requirements of remote sensing satellites.Single-core DSP can no longer meet real-time requirements.TMS320C6678 is a high-performance multi-core floating-point DSP based on the KeyStone structure,with a main frequency of 1.25 GHz,which meets the needs of satellite application.Regarding the satellite use environment,whether it is FPGA or DSP,configuration loading is very important,and it is about success or failure.This article introduces the loading mode and process of TMS320C6678 in detail,and proposes a high-reliability heterogeneous loading method of Nor Flash based on EMIF16,and a program Bootloader.The test verifies that the TMS320C6678 can operate stably and reliably under the design method of this article.

关 键 词：多核DSP 6678 EMIF16 BOOTLOADER 

分 类 号：V443[航空宇航科学与技术—飞行器设计]