基于PCI总线的智能双通道RS422通信卡设计  

Design of smart double-channel RS422 communication card based on PCI bus

作　　者：熊飞[1] 魏宗寿[1] 

机构地区：[1]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

出　　处：《铁路计算机应用》2010年第7期54-57,共4页Railway Computer Application

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。该接口卡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。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.

关 键 词：XR16C854 PCI RS422 WDM驱动模型 

分 类 号：U284.3[交通运输工程—交通信息工程及控制]