基于PowerPC8640的PCI-E总线接口设计  

Design of PCI-E Bus Interface Based on PowerPC8640

作　　者：张伟栋[1] 刘志敏[2] 

机构地区：[1]中国航空计算技术研究所,陕西西安710068 [2]空军航空大学,吉林长春130022

出　　处：《航空计算技术》2011年第3期119-121,134,共4页Aeronautical Computing Technique

摘　　要：PCI-E总线因为其自身的特点和关键技术优势,被公认为下一代总线标准。PowerPC8640内部集成有PCI-E接口,同时本身是一款高性能的处理器。重点介绍了PowerPC8640集成的PCI-E接口的特征以及软件初始化流程,PowerPC8640的PCI-E接口作为主设备,设计了两种PCI-E从设备的实现方式:使用FPGA的PCI-E硬核和专用PCI-E转PCI的芯片PEX8112,实现PCI-E的通信。经加电试验,所有功能都已实现,表明采用PowerPC8640实现PCI-E的方法可行,而且简化了硬件设计和软件开发。PCI-E is considered as next Bus standard,because of the characteristic and key technology advantage.PowerPC8640 integrates PCI-E interface,and it is a high-powered CPU.The paper introduces mainly PCI-E of PowerPC8640 and flow of initialization.PCI-E of PowerPC8640 is master,we devise two methods of others PCI-E device as slave： using PCI-E hard-IP of FPGA and using PEX8112 which is PCI-E to PCI bridge.Communications of PCI-E is implemented.All functions are implemented,and the result indicates that the method of PCI-E Bus interface based on PowerPC8640 is viable,and this method makes hardware design and software exploitation easy.

关 键 词：总线 PowerPC8640 PCI-E FPGA PEX8112 

分 类 号：TP336[自动化与计算机技术—计算机系统结构]