一种PCIe接口逻辑的FPGA实现  

An FPGA Implementation of PCIe Interface Logic

作　　者：秦固平 毛瑞娟[2] 杨小勇[2] 常振杰 QIN Guping;MAO Ruijuan;YANG Xiaoyong;CHANG Zhenjie(Unit 66138,PLA,Beijing 100043,China;National Radio Spectrum Management Institute,Xi ’an 710061,China)

机构地区：[1]中国人民解放军66138部队 [2]国家无线电频谱管理研究所有限公司

出　　处：《无线电工程》2019年第4期351-356,共6页Radio Engineering

摘　　要：针对无线电监测设备中数据传输接口大带宽、高性能和高效率的性能要求,以数字接收机中数字处理板卡作为端点设备,以工控板作为根复合体设计了一种基于FPGA的PCIe接口逻辑。详细讨论了PCIe DMA写逻辑各个模块的工作原理和设计思想,最终实现了数据以DMA模式从端点设备写入根复合体的高速传输。测试结果表明,DMA写数据传输带宽最高可达8.5 Gbps。In view of the large bandwidth,high performance and high efficiency performance requirement of the data transmission interface in the radio monitoring equipment,the digital processing board in the digital receiver is used as the endpoint device.And the industrial control board is used as the root complex to design a PCIe(Peripheral Component Interconnect Express)interface logic which is based on FPGA(Field Programmable Gate Array).The design idea and working principle of each module of PCIe DMA(Direct Memory Access)write logic are discussed in detail.And finally the high-speed transmission of data from the endpoint device to the root complex is realized in DMA mode.Test results show that the bandwidth of DMA write data transmission can reach up to 8.5 Gbps.

关 键 词：现场可编程逻辑门阵列 高速串行计算机扩展总线标准 直接存储器访问 

分 类 号：TN98[电子电信—信息与通信工程]