基于WISHBONE总线的双向PCI高速传输接口设计  

The bidirectional interface design of PCI high- speed transmission based on WISHBONE bus

作　　者：梁烨[1] 简献忠[1] 肖儿良[1] 姜冠祥 蔡留美 郑照平 

机构地区：[1]上海理工大学光电信息与计算机工程学院,上海200093 [2]上海雄博精密仪器股份有限公司,上海200444

出　　处：《电子技术应用》2016年第8期77-79,83,共4页Application of Electronic Technique

基　　金：上海市宝山区科委产学研项目(bkw2015130)

摘　　要：针对目前设计的PCI卡存在传输速度慢、复杂度高和购买PCI核价格昂贵的问题,提出了一种基于WISHBONE总线的PCI接口双向传输设计的新方案。系统采用开源的WISHBONE总线的PCI接口的IP核,设计了基于Xilinx Aritx-7系列FPGA芯片的PCI接口卡,该卡兼容5 V和3.3 V电平;采用DMA(直接内存存取)方式进行高速数据传输。实验表明,设计的PCI接口运行在主模式时,数据传输速率可达65×32 Mb/s,传输速率明显提升,且数据传输准确稳定,达到了设计目的,为高速PCI接口设计提供了一种新的思路。The PCI existed the problems of low transmission speed, high complexity and PCI Core prices, a new design scheme of PCI bidirectional interface based on WISHBONE bus was presented in this paper. The system architecture used open source called PCI- WISHBONE IP core and implemented a PCI interface card based on Xilinx Artix- 7 series FPGA chip, which is compatible with 3. 3 V and 5 V voltage and is focused on a method of high speed data transmission using DMA. The experimental results con-firm that data transmission rate can reach to 65 ＊ 32 Mbit / s when the PCI bus is run in the master mode, Transfer rate has been improved significantly with data transmission accuracy and stability. It provides a new sort of methods for the high- speed PCI inter-face design.

关 键 词：PCI接口 DMA 高速传输 WISHBONE总线 

分 类 号：TP311.1[自动化与计算机技术—计算机软件与理论]