一种HDLC协议多通道通信卡的设计与实现

Design and Implementation of Multi Channel Communication Card Based on HDLC

中文关键词:  HDLC  FPGA  PCI9054  PCI总线

英文关键词:HDLC  FPGA  PCI9054  PCI bus

中文摘要:

      为满足实际工作需要，设计实现了一款基于PCI总线并符合HDLC协议规范的多通道通信卡。首先，介绍了该通信卡的设计思路和系统组成；其次，叙述了PCI总线接口设计的关键技术和简化HDLC协议的FPGA硬件开发；最后，给出了该通信卡的地址空间分配以及底层驱动程序设计方法和该通信卡在通信状态下的数据收发时序图。结果表明，该通信卡符合简化的HDLC协议规范，满足功能要求。

英文摘要:

      In order to satisfy actual work need，a multi-channel HDLC communication card based on PCI bus is designed and implementated on hardware and software.Firstly，the design ideas and system architecture of the card are introduced.Then，the key technology of PCI bus and the hardware implementation of the simple HDLC protocol are described.Finally，the address space allocation and design method of drive software are given，the timing diagram of data transmitting and receiving of the card is shown.The results prove that the card measures up the simplified HDLC protocol，and satisfies the function demands.