【摘要】 在航天应用中,为了减少单粒子翻转效应的影响,星载计算机的RAM存储单元采用检错纠错(EDAC)设计。本文介绍了EDAC原理,并对EDAC电路组成进行改进,将数据和校验存储在一片64Kx8的SRAM中,通过FPGA内部逻辑实现EDAC功能和RAM读写控制,增加了纠错回写和纠错计数功能,并提供测试验证EDAC功能的方法。更多还原

【Abstract】 To mitigate the effect of single event upset (SEU), EDAC technology is often applied on on-board computer RAM. This paper presents the principle of EDAC, and improves the EDAC circuit by the use of single SRAM for data and parity storage, thus saving PCB areas, reducing costs. Finally a method of verifying the EDAC function is proposed.更多还原