新型即插即用星载计算机千兆以太网系统设计  

Plug-and-Play on-board computer data transmission system design for Gigabit Ethernet

作　　者：童天成 叶建芳[1] 

机构地区：[1]东华大学信息科学与技术学院通信与电子工程系,上海201620

出　　处：《微型机与应用》2015年第15期40-43,46,共5页Microcomputer & Its Applications

摘　　要：针对我国现阶段星载计算机通用性较差和无法"即插即用"的问题,以及对数据传输速率的高要求,设计了新型即插即用星载计算机千兆以太网数据传输系统,重点研究了星载计算机的总体结构设计和千兆以太网的实现。该系统以国产BM3803为处理器,采用紧凑型外围组件互联c PCI总线为内总线与系统各功能模块互连,实现即插即用和通用化功能。千兆以太网平台采用MAC+PHY方式,MAC采用FPGA内嵌的IP核实现,PHY采用Marvell公司的88E1111芯片实现。对比国产星载计算机在以太网方面的现状,分析表明,该系统通用性更好,数据处理性能更高,数据传输速率最高可达1 Gb/s。以FPGA方式实现千兆以太网设计,有效提高了系统的可靠性和集成度,能够满足未来较长时间国内星载计算机系统在千兆以太网方面的实际应用需求。Most on-board computer of China can′t completely realize the function of universality and Plug-and-Play. With the requirements of high data transfer rate, the paper designs a new Plug-and-Play on-board computer data transmission system based on BM3803 processor for Gigabit Ethernet. The design focuses on the implementation of the overall structure and Gigabit Ethernet.The system uses domestic BM3803 processor as central processing unit（CPU）, which connects to the field programmable gate array（FPGA） by compact peripheral component interconnect（c PCI） bus. Gigabit Ethernet platform consisted of MAC and PHY. It uses embedded MAC IP core of FPGA accomplish the MAC protocol, and uses the 88E1111 chip accomplish the PHY protocol.Comparison and analysis of the design and that of traditional on-board computer system show that the system is universal and expandable, and has higher data processing performance and 1 Gb/s transfer rates. Gigabit Ethernet is designed with the FPGA methods, effectively improving the reliability and integration of system, and extremely meeting the requirements of a new generation of on-board computer system in terms of Gigabit Ethernet.

关 键 词：BM3803 处理器 VIRTEX-4 FPGA 星载计算机 千兆以太网 CPCI总线 

分 类 号：TP393.11[自动化与计算机技术—计算机应用技术] V446.2[自动化与计算机技术—计算机科学与技术]