基于增强并行口EPP协议的CAN控制器设计  

Design of CAN Bus Controller Based on Enhanced Parallel Port Protocol

作　　者：曹军义[1] 刘曙光[1] 

机构地区：[1]西安工程科技学院,陕西西安710048

出　　处：《自动化与仪表》2003年第2期4-7,共4页Automation & Instrumentation

摘　　要：CAN总线接口卡以ISA和PCI居多,现场测试不方便。EPP是双向数据传输的增强并行口协议,速度较高,扩展方便,手提电脑均支持。详细分析了EPP协议的工作特点,用可编程器件GAL实现了接口协议转换,给出了便携式CAN控制器的硬件组成及软件设计实现,并对硬件设计做了详尽的分析。In present, there are many interface cards of CAN bus through ISA and PCI, they are not easy to test in field. EPP is a bi directional data communication protocol of enhanced parallel port, it has performances of high speed and easy extensibility, which is provided by luggable computer. The paper analyzes the work feature of EPP and implements the protocol conversion of EPP interface with GAL device. The circuit schematics and software implement of EPP CAN controller is presented in this paper. In the same time, the several key technologies are explained in the design.

关 键 词：EPP协议 CAN 现场总线 

分 类 号：TN915.04[电子电信—通信与信息系统] TN915.05[电子电信—信息与通信工程]