本文首次设计并验证了基于macom三合一芯片设计的光模块电路,该电路旨在提供一种满足SFF-8472中规定的数字诊断功能的低成本SFP+模块。电路采用激光器驱动、限幅放大器、控制器以及时钟恢复单元集成的单芯片,在保证高精度数字诊断功能基础上,实现了低成本高可靠的特点。该电路在光接收接口组件与激光器驱动和限幅放大器单元的限幅放大器部分之间接入滤波器来提高模块的灵敏度及信号质量。在控制器单元的数字电位器的引脚上采用外加电阻的方式避免出现上电不发光的故障问题。该研究结果为下一代SFP-DD光模块设计与开发工作,奠定了一定的理论与实践基础。This paper designs and validates the optical module circuit based on the MACOM Trinity chip for the first time.This circuit aims to provide a low-cost SFP module which meets the digital diagnosis function specified in SFF-8472.The circuit uses a single chip integrated with laser driver,limiting amplifier,controller and clock recovery unit.On the basis of ensuring high precision digital diagnosis function,it achieves the characteristics of low cost and high reliability.The circuit connects a filter between the optical receiving interface module and the limiting amplifier part of the laser driver and limiting amplifier unit to improve the sensitivity and signal quality of the module.The pin of the digital potentiometer in the controller unit is equipped with an external resistance to avoid the problem of power failure.The research results lay a theoretical and practical foundation for optical module design in high-speed data center.
上传时间： 2022-04-03
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实验教学一直是工科教学中不可或缺的组成部分,对培养学生的动手能力,独立思考能力,创新思维与发散思维具有重要的作用。针对目前电路教学实验中电路仿真实验与实物电路实验各自独立,无法统一问题,提出将仿真电路实验与实物电路实验有机的结合同步操作,并使用Web发布实现远程实验操作。采用Multisim作为电路实验仿真平台,NI Eiviss II作为实物电路实验硬件平台,运用LabVIEW整合Multisim电路仿真实验与实物电路实验,实现仿真与实物实验有机结合,两种实验可同步进行。学生在仿真实验中先可探索实验,然后做实物实验。同时运用LabVIEW开发出实验过程人机交互操作接口界面,使用过程中效果良好。Experimental teaching has always been an indispensable part of engineering education.And it always plays an important role in cultivating students'practical ability,independent thinking ability,innovative thinking and divergent thinking.But simulation experiment and physical experiment cannot be unified in the circuit teaching experiment at present.In order to solve this problem,this paper proposes to combine organically the simulation circuit experiment with physical circuit experiment,and synchronously operate them.This paper uses the WEB publishing to achieve remote experimental operation.Multisim is used as the circuit simulation platform,and NI Eiviss II is used as the physical circuit hardware platform.Multisim circuit simulation experiment and physical circuit experiment are implemented by LabVIEW to realize the combination of simulation experiment and physical experiment.Students do explore experiments in simulation experiment firstly,and then do physical experiment.And this paper uses LabVIEW to develop the experimental man-machine interface.
上传时间： 2022-04-05
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Mathematical modeling has become an important part of the research and devclopment work in engineering and scicnce. Retaining a competitive edge requiresa fast path between ideas and prototypes, and in this regard mathematical modeling and simulation provide a valuable shortcut for understanding both qualitative and quantitative aspects of scientific and engineering design. To assist you in gaining this edge, COMSOL Multiphysics offers state-of-the art performance, being built from the ground up with a Java3D interface and C/C++ solvers.The Acoustics Module is an optional package that extends the COMSOL Multiphysicsmodcling cnvironment with customized user interfaces and functionality optimizcd for the analysis of acoustics. Like all modules in the COMSOL family, it provides a brary of prewritten ready-to-run models that make it quicker and casier to analyze disciplinc-specific problcms.
上传时间： 2022-06-19
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AR0231AT7C00XUEA0-DRBR（RGB滤光）安森美半导体推出采用突破性减少LED闪烁 (LFM)技术的新的230万像素CMOS图像传感器样品AR0231AT，为汽车先进驾驶辅助系统(ADAS)应用确立了一个新基准。新器件能捕获1080p高动态范围(HDR)视频，还具备支持汽车安全完整性等级B(ASIL B)的特性。LFM技术(专利申请中)消除交通信号灯和汽车LED照明的高频LED闪烁，令交通信号阅读算法能于所有光照条件下工作。AR0231AT具有1/2.7英寸(6.82 mm)光学格式和1928(水平) x 1208(垂直)有源像素阵列。它采用最新的3.0微米背照式(BSI)像素及安森美半导体的DR-Pix™技术，提供双转换增益以在所有光照条件下提升性能。它以线性、HDR或LFM模式捕获图像，并提供模式间的帧到帧情境切换。 AR0231AT提供达4重曝光的HDR，以出色的噪声性能捕获超过120dB的动态范围。AR0231AT能同步支持多个摄相机，以易于在汽车应用中实现多个传感器节点，和通过一个简单的双线串行接口实现用户可编程性。它还有多个数据接口，包括MIPI(移动产业处理器接口)、并行和HiSPi(高速串行像素接口)。其它关键特性还包括可选自动化或用户控制的黑电平控制，支持扩频时钟输入和提供多色滤波阵列选择。封装和现状：AR0231AT采用11 mm x 10 mm iBGA-121封装，现提供工程样品。工作温度范围为-40℃至105℃(环境温度)，将完全通过AEC-Q100认证。
标签： 图像传感器
上传时间： 2022-06-27
上传用户：XuVshu
PrefaceDuring the past years, there has been a quickly rising interest in radio access technologies for providingmobile as well as nomadic and fixed services for voice, video, and data. The difference indesign, implementation, and use between telecom and datacom technologies is also becoming moreblurred. One example is cellular technologies from the telecom world being used for broadband dataand wireless LAN from the datacom world being used for voice-over IP.Today, the most widespread radio access technology for mobile communication is digital cellular,with the number of users passing 5 billion by 2010, which is more than half of the world’s population.It has emerged from early deployments of an expensive voice service for a few car-borne users,to today’s widespread use of mobile-communication devices that provide a range of mobile servicesand often include camera, MP3 player, and PDA functions. With this widespread use and increasinginterest in mobile communication, a continuing evolution ahead is foreseen.This book describes LTE, developed in 3GPP (Third Generation Partnership Project) and providingtrue 4G broadband mobile access, starting from the first version in release 8 and through the continuingevolution to release 10, the latest version of LTE. Release 10, also known as LTE-Advanced,is of particular interest as it is the major technology approved by the ITU as fulfilling the IMTAdvancedrequirements. The description in this book is based on LTE release 10 and thus provides acomplete description of the LTE-Advanced radio access from the bottom up.Chapter 1 gives the background to LTE and its evolution, looking also at the different standardsbodies and organizations involved in the process of defining 4G. It also gives a discussion of the reasonsand driving forces behind the evolution.Chapters 2–6 provide a deeper insight into some of the technologies that are part of LTE and itsevolution. Because of its generic nature, these chapters can be used as a background not only for LTEas described in this book, but also for readers who want to understand the technology behind othersystems, such as WCDMA/HSPA, WiMAX, and CDMA2000.Chapters 7–17 constitute the main part of the book. As a start, an introductory technical overviewof LTE is given, where the most important technology components are introduced based onthe generic technologies described in previous chapters. The following chapters provide a detaileddescription of the protocol structure, the downlink and uplink transmission schemes, and the associatedmechanisms for scheduling, retransmission and interference handling. Broadcast operation andrelaying are also described. This is followed by a discussion of the spectrum flexibility and the associated
上传时间： 2022-07-08
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VIP专区-嵌入式/单片机编程源码精选合集系列（18）资源包含以下内容：1. These patch files are supplied as part of ADS 1.2.1..2. 星期算法,即知道日期,即可知道该天是星期几.3. AT45DB041的驱动.4. 模拟UART程序(C语言).5. 模拟SPI程序(C语言).6. MSP430时钟程序( C语言示范程序).7. I2C及同步传输的扩展技术.8. 并行口仿真i2c总线.9. Mega8完美下载 包含源程序.10. 用于iic的读写。上面有例子可以参考.11. 免费的AHDL模块库,包括IIC控制器,DRAM控制器,UART等28个模块,AHDL源代码.12. FLASH存储器件国际标准.13. 变压器概述-变压器经典文章（中文PDF）.14. 一个完整DVDROM代码(使用日立PICKUP).15. 19264液晶显示完整C程序.16. 44b0板上的usb固件及上位机程序.17. TI54X 擦除FLASH代码.18. TI54X 写FLASH源码.19. AVR 下载线源程序.20. AVR编程C原代码.21. C嵌入式编程.22. 用于嵌入式系统的TCP/IP协议栈.23. 用于嵌入式系统的TCP/IP协议栈及若干服务.24. WindowsCE上的一个画板程序.25. WinCE上的聊天程序.26. 微软提供的WinCE中几个控件的例子代码.27. 微软提供的Flash驱动程序.28. 触摸屏驱动的程序.29. PCI总线的驱动程序.30. ISD1400语音电路.31. M-BUS总线中的模拟电路.32. MSP430与液晶显示器的串行接口方案.33. PCB制造流程及说明.34. RS RS-232 至RS RS-485 RS RS-422 智能转换器.35. TKS 系列仿真器使用指南.36. 彩色液晶智能显示器.37. 常用运放电路集锦.38. 多功能平台数据协议.39. 公交IC 电路图.40. 国家标准——电力线载波系统设计导则.
上传时间： 2013-05-22
上传用户：eeworm
VIP专区-嵌入式/单片机编程源码精选合集系列（132）资源包含以下内容：1. siemens PLC Prodave 通讯测试.2. 嵌入式系统下IC卡读写的源码.3. 数字音乐盒的完整毕业论文（无意中发现的） 课程设计题目：数字音乐盒.4. 单片机程序 51频率计 电子琴 电子钟程序 按键显示程序最终成功.5. C和C++嵌入式系統編程,一本很嵌入式编程很不错的书..6. 一本很好的介绍yaffs文件系统的书籍 一本很好的介绍yaffs文件系统的书籍.7. 一份不错的介绍linux 字符设备驱动的文档.8. 工程源文件.9. 用holtek3000开发环境编写的单片机C语言键盘扫描程序．.10. 8255A芯片的中文资料（8255中文资料）.11. mmc_sd_memory_card_driver_sample_project_files spi接口的sd card driver 示例.12. 单片机驱动PS2键盘的c程序 希望对大家有用.13. a voice guide client ,it is the second part of voice guide center.14. msc map program to control client of tools,use for map guide.15. C#开发win ce代码程序.16. 2个Ds18b20温度显示电路,12Mhz晶振.17. 5分频cpld原理图实现.18. 可实现对ST公司的SPI flash的控制.19. VB实现的文字图片原理,VB实现的文字图片原理.20. 嵌入式C精华, 嵌入式C精华,嵌入式C精华.21. 一个简单的电梯控制系统,主要实现一个八层楼的电梯控制..22. 这是自己做的一个gui 及供初学者参考 如有问题可以一起讨论 可发到我的邮箱里 完成的功能就是 对uicontrol的应用.23. 触摸屏校正算法,主流嵌入式设计都使用此算法,个人觉得经典..24. 基于51单片机的源码,内有液晶显示(IIC)接口,还实现串口和定时操作等功能..25. 链接器和加载器,这是一本全面介绍我们编写的程序是如何被链接的,个人觉得做嵌入式开发的软件工程师必备的一本书..26. 使用Embest IDE for ARM 开发环境及ARM 软件模拟器； 通过实验掌握简单ARM 汇编指令的使用方法。.27. AD7714是一款24位高速AD转换芯片.28. Cortex-M3是首款基于ARMv7-M架构的处理器.29. 刚刚学习ne2000驱动开发.30. ATMEL的芯片资料pdf文档.31. GPS卫星定位模块的驱动程序.32. 还可以.33. 基于CAN总线的分布式三维步进电机控制系统.34. 自己做的交通灯~~~用c编写的.35. 基于PCI总线的高速数据传输.36. [转载]嵌入到系统进程中,检查并报告主板型号.37. Freescale_071112_1公司内部的器件资料.38. 关于2410开发板的u-boot的说明.39. CX1-22R 可编程控制器(简称 CX1)是 22 路 I/O 一体化小型可编程控制器（PLC）.40. PIC汇编各个时间延时小程序.
标签： SD卡
上传时间： 2013-04-15
上传用户：eeworm
ITU-T G.729语音压缩算法。 description: Fixed-point description of commendation G.729 with ANNEX B Coding of Speech at 8 kbit/s using Conjugate-Structure Algebraic-Code-Excited Linear-Prediction (CS-ACELP) with Voice Activity Decision(VAD), Discontinuous Transmission(DTX), and Comfort Noise Generation(CNG).
标签： description commendation Fixed-point 729
上传时间： 2014-11-23
上传用户：thesk123
See Appendix B for a description of the programs included on this companion disk. RESOURCE.WRI identifies other books and resources for Internet programming. WEBHELP.HLP contains an introduction to the World Wide Web. TCPMAN.HLP provides detailed instructions to help you use the Trumpet Winsock included on this disk. Use the Program Manager s File menu Run option to execute the SETUP.EXE program found on this disk. SETUP.EXE will install the programs on your hard drive and create an Internet Programming group window. Internet编程技术 [配套程序] [涉及平台] VC [作者] void [文件大小] 1032K
标签： description companion Appendix RESOURCE
上传时间： 2013-12-04
上传用户：asasasas
经典英文原著图书之a b c’s of science(简易科学)，感觉不错，推荐一睹！
上传时间： 2014-01-12
上传用户：kelimu
