提升供电容量和数据速率的1-WIRE串行总线  

Power Capability and Data Rate Enhanced 1-WIRE Serial Bus

作　　者：王峻松[1] 朱潇挺[1] 任腾龙[1] 洪志良[1] 

机构地区：[1]复旦大学专用集成电路与系统国家重点实验室,上海201203

出　　处：《小型微型计算机系统》2008年第10期1920-1924,共5页Journal of Chinese Computer Systems

基　　金：ADI公司项目基金资助

摘　　要：研制一种在1-WIRE基础上改进的寄生供电串行通信总线,改进系统在基本不增加传输带宽需求的前提下把数据传输速率143kbps提升至1Mbps;增加了少量电路把寄生供电能力由平均电流5μA提升至大于1mA.改进系统与现有的1-WIRE设备和传输电缆保持了向下兼容,保证了技术的延续和投资收益.本文采用TSMC0.25μm标准数字CMOS工艺设计了原型电路,仿真结果表明电路性能满足设计要求.改进系统可以支持实时环境监测和大数据量传输等功能,拓展了寄生供电串行通信技术的应用空间.This paper proposed a new parasite powered serial bus based on 1-WIRE. Compared with the conventional 1-WIRE, the performances were improved much to satisfy complex applications： The highest data rate increased from 143kbps to 1 Mbps ; the capability of parasite power supply increased from 5μA to lmA in average. The new circuit was backward compliant with the traditional 1-WIRE devices and cable. The prototype circuit was developed, and it was verified by simulation in TSMC 0.25μm Logic CMOS technologies. The transceiver fully satisfied the new specification, which assured the feasibility of the proposed bus.

关 键 词：串行通信 自适应上拉 寄生供电 收发器 

分 类 号：TN492[电子电信—微电子学与固体电子学]