基于GM8123的串口扩展硬件解决方案  

Solution of serial port expansion based on GM8123

作　　者：孙世君[1] 

机构地区：[1]辽东学院电子信息工程系,辽宁丹东118003

出　　处：《国外电子元器件》2007年第6期53-55,共3页International Electronic Elements

摘　　要：目前,基于串行接口的扩展解决方案包括:使用软件虚拟串口和硬件接口器件扩展两种方案。前者因为存在着较为严重的误码概率,可能增加系统的使用风险。后者虽增加了硬件开销,却可以有效降低系统的误码风险。最新的GM812X扩展方案在不明显增加硬件开销的前提下,可有效解决通信过程中的误码问题,降低系统的软件风险,提高系统的可靠性。通过典型应用实例,给出了一种基于串口扩展的硬件解决方案。At present,there are two solutions based on expanding serial interface. One is the software dummuy serial interface, the other is hardware serial interface expension. Because the former has more serie error code, it may increase system risk. The latter may although increase the system overhead.But it may reduce the system error code. The new GM812X expansion solution can solve the error code problem during communication, to reduce the system software risk, and to enhance the system reliability. A kind of hardware solution based on serial interface is given,through a type applicaiton exammple.

关 键 词：异步串行通信 接口 波特率 GM8123 

分 类 号：TP334[自动化与计算机技术—计算机系统结构]