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论文:2013,Vol:31,Issue(3):429-434 |
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引用本文： |
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王党辉, 何花, 辛明瑞, 安建峰. 一种自主恢复的高可靠存储控制器设计[J]. 西北工业大学 |
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Wang Danghui, He Hua, Xin Mingrui, An Jianfeng. Design of an Automatic Recovery Memory Controller[J]. Northwestern polytechnical university |
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| 一种自主恢复的高可靠存储控制器设计 |
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| 王党辉1, 何花1, 辛明瑞1,2, 安建峰1 |
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1. 西北工业大学 计算机学院, 陕西 西安 710072;
2. 山东航天电子技术研究所, 山东 烟台 264000 |
| 摘要: |
| 单粒子效应是星载计算机工作异常和故障的重要诱因之一,国内外多颗卫星遭受到单粒子效应的危害,已造成巨大的经济损失。提出了一种片上自主恢复存储控制器结构,将EDAC技术集成在片内存储器控制器中,通过EDAC电路检测片外存储器中的数据错误,再通过自动回写机制更新片外存储器,便能保持存储器中数据的正确性。与传统的星载计算机存储器系统设计方案相比,使处理器干预主存储器纠错的频度大幅减少。集成的片上存储控制器也减少了星载计算机系统设计的负担。 |
| 关键词:
可靠性
存储控制器
EDAC
自主恢复
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| Design of an Automatic Recovery Memory Controller |
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| Wang Danghui1, He Hua1, Xin Mingrui1,2, An Jianfeng1 |
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1. Department of Computer Science and Engineering,Northwestern Polytechnical University,Xi'an 710072,China;
2. Shandong Aerospace Electro-Technology Institute,Yantai 264003,China |
| Abstract: |
| Reviewing some past research[1-4], we have come to believe that SEU (single event upset) is the main reason for fault or even failure of satellite-borne computer.This paper proposes a reliable memory controller that can write corrected data back into memory automatically.Figure 2 shows the state transition for the main finite state ma-chine, which can enter an "error" state to correct the error if an error is detected during a data read cycle.A mem-ory protection register is defined and the structure of the protection unit is shown in Figure 5.Figure 6 shows the re-liable data path, which uses EDAC circuit to detect and correct errors.Figure 7 shows the automatic recovery flow while Figures 8, 9 and 10 analyze the behavior of the memory controller when an error occurs and it is shown that single bit error in a data can be corrected and, after correction, written back into memory automatically. |
| Key words:
controllers
design
error correction
error detection
flowcharting
reliability
automatic recovery
EDAC
memory controller
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| 收稿日期: 2012-06-07
修回日期:
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| DOI: |
| 基金项目: 国家自然科学基金(61272122、61003037);西北工业大学基础研究基金(JC201256)资助 |
| 通讯作者:
Email： |
| 作者简介: 王党辉(1975-),西北工业大学副教授,主要从事计算机系统结构的研究。
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