针对嵌入式系统的网络通信应用需求,设计并实现了一种基于FPGA芯片Virtex4中内嵌PowerPC405控制器的网络通信系统;并且给出了硬件系统设计方法.通过移植开源的Linux操作系统,在SOPC上实现了基于Linux稳定的网络功能.此外,详细介绍了在SOPC硬件系统上Linux的整个设计与开发过程,包括交叉编译环境建立、U-BOOT移植、开源linux移植、Busybox根文件系统建立.最后给出了网络性能测试结果.“,”A network communication system based on the processor Powerpc405 within FPGA Virtex 4 is presented for the network communication application of embedded system; Also, a scheme for designing the hardware system is outlined. A powerful yet robust network module is developed on SOPC by transplanting Linux. In addition, the overall procedure including building cross tool, transplanting U-Boot, transplanting open-source Linux, and constructing Busybox root file system is described in detail. Finally, the performance of the network is validated.