基于XR16L78x的多串口扩展方案优势分析  

Advantages of Serial Extension Scheme Based on XR16L78x

作　　者：曹富禄[1] 

机构地区：[1]西安电子工程研究所,陕西西安710100

出　　处：《现代电子技术》2011年第24期163-164,170,共3页Modern Electronics Technique

摘　　要：XR16L78x相对于传统4通道串口扩展芯片具有硬件、软件及性能等方面的优势。为了分析基于XR16L78x进行串口扩展方案的优势,绘出了分别基于XR16L784,ST16C554对CPU进行串口扩展的硬件接口图,给出了典型的中断处理程序。通过硬件和软件方面的对比,证明基于XR16L78x的多串口扩展方案简化了硬件接口、提供了更快的中断服务。Compared with the traditional four-channel UARTs,XR16L78x has many advantages in fields of hardware,software and performances.Hardware interface diagrams and typical interrupt processing program based on XR16L784 or ST16C554 to extend the serial interface to CPU are provided to analyze these advantages of the scheme based on XR16L78x.The contrast of the hardwares and softwares proves that the multi-serial-port extension scheme based on XR16L78x simplifies the hardware interface and provides a quicker interrupt service.

关 键 词：XR16L78x 多串口扩展 硬件接口 XR16L78x 

分 类 号：TN911-34[电子电信—通信与信息系统]