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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The GL823K integrates a high speed 8051 microprocessor and a high efficiency hardware engine for the best data transfer performance between USB and flash card interfaces. Its pin assignment design fits to card sockets to Provide easier PCB layout. Inside the chip, it integrates 5V to 3.3V regulator, 3.3V to 1.8V regulator and power MOSFETs and it enables the function of on-chip clock source (OCCS) which means no external 12MHz XTAL is needed and that effectively reduces the total BOM cost.
上传时间： 2022-04-27
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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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Introduction The Sil9135/Sil9135A HDMI Receiver with Enhanced Audio and Deep Color Outputs is a second-generation dual-input High Definition Multimedia Interface(HDMI)receiver. It is software-compatible with the Sil9133receiver, but adds audio support for DTS-HD and Dolby TrueHD. Digital televisions that can display 10-or 12-bit color depth can now Provide the highest quality protected digital audio and video over a single cable. The Sil9135and Sil9135A devices, which are functionally identical, can receive Deep Color video up to 12-bit,1080p @60Hz. Backward compatibility with the DVI 1.0specification allows HDMI systems to connect to existing DVI 1.0 hosts, such as HD set-top boxes and PCs. Silicon Image HDMI receivers use the latest generation Transition Minimized Differential Signaling(TMDS) core technology that runs at 25-225 MHz.The chip comes pre-programmed with High-bandwidth?
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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
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Simulation can Provide a lot of information about what the system is doing. We canadd the effect of different element, like Encoder resolution, ADC sampling rate, etc and understand how does it affect the system. Another benefit is the possibility to slow down the process, to gain insight on what happens of fast systems or, vice versa, speed up slow process.Because National Instruments is a unique company in the fact the we Provide a fullhardware solution couple with a full development platform, we can use this tools in very particular ways For example, it is possible to combine the LabVIEW Control Design and Simulation Module along with the FPGA module to quickly prototype a controller. One of the main benefits of this approach is that there is no need to compile the FPGA code, which allows for a quick algorithm design turnaround and debugging.
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上传时间： 2022-07-20
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VITA 46 Highlights Retain standard 6U and 3U form-factors Height, depth, pitch, front panel arrangements, conduction-cooled interfaces, etc.Support standard-length PMC and XMC modules· Support high-speed serial fabric on the backplane Tyco MultiGig RT2,7-row connector· Support VME and PCI interfaces for legacy compatibility· Provision for optical connectors as option· Support improved logistics Provide support for Line Replaceable Module(LRM) applications with ESD-protected connector Alignment and keying blocks
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上传时间： 2022-07-25
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VIP专区-嵌入式/单片机编程源码精选合集系列（50）资源包含以下内容：1. 冷光源 产品的控制器 HT48R系列和HT48E系列.2. 冷光源 产品的控制器 HT48R系列和HT48E系列.3. 冷光源 产品的控制器 HT48R系列和HT48E系列.4. MT28F128J3 flash 编程 也适用intel flash 28F 系列 里面是pdf文档.5. 流水灯 使用定时器控制.6. moder 51汇编程序框架 D4为串口发送中断指示灯； D5为外部中断1指示灯； D6为外部中断0指示灯； D7为串口接收中断指示灯； D8为定时器指示灯；.7. 计数器0的实验程序 intT0 取时钟电路产生计数脉冲.8. SMDK2410boardTestProgram.9. tini的http-slientC程序.10. TINI的pop3的c代码.11. 用VC做的PC与单片机通信的程序,很实用的.望此代码给大家带来方便或有所启发.12. cypress usb 68013a examples.13. 本文件用于spi接口的键盘扫描模块.14. 跑马灯设计.15. 在smartarmm2200上显示波形实现暂停退出的功能.16. 解决smartarm2200串口下载问题的程序.17. smartarm2200d的ad转换程序.18. 自己画的经244隔离的JTAGFORAVR.19. 第一次上传.20. at91sam7s64 arm的A/D转换测试代码.21. 8279键盘显示芯片实验源程序（C语言编写）.22. 菲利普单片机LPC900系列的I2C读写程序.23. 当前SOC是嵌入式系统设计的一大热点.24. 自己收藏的单片机程序——洗衣机的工作原理。c语言编写。.25. 用C8051F300设计锂离子电池充电器的解决方案！给大家参考！.26. 触摸屏驱动源码.27. MSP430 串口通讯通过中断实现.28. 综合电子设计实验部分元件功能管脚详细说明电子原理图.29. sc2410测试程序.30. atmel at91sam7s header file extented, some extra register definitions are set and extra functions ar.31. IAR开发平台下.32. IAR下.33. atmel at91sam7s和7x下.34. LM16032DDC-0B-Manual-Rev0[1]液晶屏幕使用.35. ucos-ii的图形界面移植.36. 很好的一个菜单处理程序.37. 嵌入式系统开发 TOPPERS and JSP Kernel Release 1.3 TOPPERS = Toyohashi Open Platform for Embedded Real-Tim.38. 嵌入式系统开发用源代码 包含At91C arm芯片相关各种例程 包括整数性能测试,浮点测试,硬件驱动等.39. Welcome to PMOS. PMOS is a set of modules, mostly written in Modula-2, to support multitasking. PMO.40. 用于motorala 68K系列处理器的小实时多任务操作系统 The OMU Kernel was written to Provide a cut-down Unix-like O/S for a.
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