LTE-A手机看门狗电路的设计与研究  

Research and Design of Watchdog Circuit on LTE-A Mobilephone

作　　者：黄学达[1] 翁明江[1] 

机构地区：[1]重庆邮电大学重邮信科通信技术有限公司,重庆400065

出　　处：《电子器件》2015年第6期1292-1295,共4页Chinese Journal of Electron Devices

基　　金：重庆市科委(cstc2013yykfc4003)

摘　　要：首先简要介绍了LTE-A手机终端的系统结构,在此基础上为解决LTE-A手机程序跑飞需要拔电池重启的问题,提出了基于分立器件实现看门狗复位的设计方案,结合基带处理器的通用输入输出接口进行软件控制,能够输出满足系统供自动重启需要的复位时间,并对硬件进行了系统的测试,该看门狗电路具有较高的时效性和可靠性,有助于提高LTE-A手机系统的稳定性。Firstly,system structure of Long Term Evolution Advanced（LTE-A）mobile phone is introduced,then systemprogram of LTE-A mobile phone is failure,which can recover by pulling out battery. Watchdog circuit scheme basedon discrete device is proposed,accompanying with software control of Baseband processor General Purpose Input Output（GPIO）,and reset time of watchdog circuit can be satisfied for system program reboot. Then system test are performed,the watchdog circuit is higher timeliness and reliability,and greatly improves the stability of LTE-A mobile phone system.

关 键 词：LTE-A手机 看门狗电路 分立器件 复位时间 

分 类 号：TN41[电子电信—微电子学与固体电子学]