Design and Implementation of USB1.1 Host and OTG Function Extension

近年来，USB接口技术在消费性电子、通讯等领域得到了越来越广泛的应用。USB的主从架构决定了设备之间必须通过主机才能进行数据交互，而目前扮演主机角色的通常是PC机，这给USB设备之间的数据交互带来了诸多的不便。集成了USB主机功能或USBOTG功能的SoC可以很好的解决这个问题。我们正在合作研发面向金融、税控领域的专用信息处理与控制SoC芯片要求集成USB1.1主机或USBOTG功能。为此本文开发一款USB1.1主机控制器，并在此基础上加入设备控制器和SRP/HNP协议实现，进行OTG功能扩展。从而在金融税控SoC中实现USB1.1主机、设备和全速OTG功能。主要工作成果如下： （1） 设计...In recent years, USB interface has been more and more widely used in the fields of consumer electronics, communication and others. The topology of USB determines that the devices can only make data interact through the Host. However, currently the PC is usually playing a host role, which causes a lot of inconvenience to the data interaction between USB devices. The SoC that integrated USB host or ...学位：工学硕士院系专业：信息科学与技术学院电子工程系_电路与系统学号：2312007115013

基于FPGA的USB主控芯片软硬件协同设计与验证

设计了一款采用PowerPC架构的USB1.1主机控制器芯片,并对该芯片进行软硬件协同验证。通过内嵌PowerPC和USB主机IP核的FPGA系统,辅以外部收发器电路、驱动、应用程序和文件系统,完成了对U-Disk和HID两类典型USB应用的测试,验证结果表明该USB主机芯片设计可以符合USB技术规范,并能和其他厂家的设备兼容

JUNO Sensitivity on Proton Decay p→νˉK+p\to \bar\nu K^+ Searches

The Jiangmen Underground Neutrino Observatory (JUNO) is a large liquid scintillator detector designed to explore many topics in fundamental physics. In this paper, the potential on searching for proton decay in $p\to \bar\nu K^+$ mode with JUNO is investigated.The kaon and its decay particles feature a clear three-fold coincidence signature that results in a high efficiency for identification. Moreover, the excellent energy resolution of JUNO permits to suppress the sizable background caused by other delayed signals. Based on these advantages, the detection efficiency for the proton decay via $p\to \bar\nu K^+$ is 36.9% with a background level of 0.2 events after 10 years of data taking. The estimated sensitivity based on 200 kton-years exposure is $9.6 \times 10^{33}$ years, competitive with the current best limits on the proton lifetime in this channel

JUNO sensitivity on proton decay p → ν K + searches*

The Jiangmen Underground Neutrino Observatory (JUNO) is a large liquid scintillator detector designed to explore many topics in fundamental physics. In this study, the potential of searching for proton decay in the $p\to \bar{\nu} K^+$ mode with JUNO is investigated. The kaon and its decay particles feature a clear three-fold coincidence signature that results in a high efficiency for identification. Moreover, the excellent energy resolution of JUNO permits suppression of the sizable background caused by other delayed signals. Based on these advantages, the detection efficiency for the proton decay via $p\to \bar{\nu} K^+$ is 36.9% ± 4.9% with a background level of $0.2\pm 0.05({\rm syst})\pm$$0.2({\rm stat})$ events after 10 years of data collection. The estimated sensitivity based on 200 kton-years of exposure is $9.6 \times 10^{33}$ years, which is competitive with the current best limits on the proton lifetime in this channel and complements the use of different detection technologies