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基于PCI总线的智能双通道RS422通信卡设计
引用本文:熊飞,魏宗寿. 基于PCI总线的智能双通道RS422通信卡设计[J]. 铁路计算机应用, 2010, 19(7): 54-57
作者姓名:熊飞  魏宗寿
作者单位:兰州交通大学,光电技术与智能控制教育部重点实验室,兰州,730070
摘    要:设计实现了一种基于PCI总线的智能双通道RS422通信卡.板卡的核心部分包括PCI总线控制器PLX9052、双口RAM,CPLD,AVR单片机Atmega128,异步收发器,及RS422总线接口芯片.介绍RS422通信卡的硬件实现及系统软件结构,包括应用程序设计和WDM驱动程序设计.该通信卡允许多达128个的接口芯片接在同一总线上,便于实现多机通信.该接口卞可以用于高速的数据通信中,并且在计算机联锁全电子智能化执行机中得到了很好的应用.

关 键 词:XR16C854   PCI   RS422   WDM驱动模型
收稿时间:2010-07-15

Design of smart double-channel RS422 communication card based on PCI bus
XIONG Fei,WEI Zong-shou. Design of smart double-channel RS422 communication card based on PCI bus[J]. Railway Computer Application, 2010, 19(7): 54-57
Authors:XIONG Fei  WEI Zong-shou
Affiliation:(Key laboratory of Opto-electronic Technology and Intelligent Control,Ministry of Education,Lanzhou Jiaotong University,Lanzhou 730070,China)
Abstract:This articled mainly introduced the design and implementation of one double-channel RS422 communication card based on PCI bus.The hardware core of the card were PCI bus interface controller PLX9052,Dual-Port RAM,CPLD,AVR microcontroller Atmega128,Universal Asynchronous Receiver/Transmitter,RS422 Bus Interface Chip.It allowed 128 interface ICs to connect with each other on one bus.It was easy to use the card in Multi-computer System.The card could be used in high speed communication and was used well in computer interlocking all-electronic intelligent performance computer.
Keywords:XR16C854  PCI  RS422
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