一种被覆线传输模块的设计与实现  

Design and Im plem entation of T ransm ission Unit Based on Sheath Wire

作　　者：亢润东[1] 白小燕[1] 

机构地区：[1]中国电子科技集团公司第五十四研究所,河北石家庄050081

出　　处：《计算机与网络》2013年第6期58-61,共4页Computer & Network

摘　　要：介绍了美国Mindspeed公司M28945与M28927芯片组的性能、结构特点,指出了应用被覆线进行数字信号远传的优势。设计了基于该芯片组的传输模块软硬件。在硬件设计部分,着重说明了线路驱动外围电路的几点关键。该传输模块可对多种速率的数学信号进行有线传输,其工作参数可通过外部单片机进行配置。业务信息速率为2 048 kbps的数字信号在基于该传输模块的被覆线(芯径0.5 mm)传输设备上有线传输距离可达4 km。This paper introduces the performance, structure and features of M28945 and M28927 chipset developed by America Mindspeed Company. It also points out the advantage of the long-distance transmission of digital signals based on the sheath wire. The design of software and hardware based on this chipset is given. In terms of hardware design, this paper focuses on some key points about line drive peripheral circuits. This transmission unit can be used to transmit multi-rate digital signals via the line. The transmission unit can be configured by the exterior MPU. Digital signals （2048kbps） can be transmitted to a distance of four kilometers with the sheath wire （0.5mm in diameter）.

关 键 词：M28945 M28927 被覆线 线路驱动 

分 类 号：TN915.61[电子电信—通信与信息系统]