基于CPLD和ISA总线的IO端口扩展  

IO Port Extension Based on CPLD and ISA Bus

作　　者：林淑玲 

机构地区：[1]公安海警学院电子技术系,浙江宁波315801

出　　处：《公安海警学院学报》2015年第3期10-12,共3页Journal of China Maritime Police Academy

摘　　要：提出了一种使用复杂可编程逻辑器件(CPLD)实现ISA总线扩展IO端口的解决方案,分析了ISA通信接口、输入输出接口和控制单元设计要点,同时给出读写数据流程。设计的端口扩展模块稳定可靠。A solution of IO port extension based on complex programmable logic device(CPLD) and ISA bus is presented in this paper which analyze the key design points of ISA communication interfaces, input/output interface and control unit. The flow of read and write data is given in this paper, too. The designed port expansion module is stable and reliable.

关 键 词：CPLD ISA总线 IO端口扩展 

分 类 号：TP334.7[自动化与计算机技术—计算机系统结构]