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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S32K1xx Series Reference Manual 用户手册--2029页 Supports S32K116, S32K118, S32K142, S32K144, S32K146, and S32K148S32K是一款符合AEC-Q100规范、基于32位ARM Cortex-M4F和Cortex-M0+内核的MCU，适用于通用汽车和高可靠性工业应用。The S32K1xx product series further extends the highly scalable portfolio of Arm® Cortex®-M0+/M4F MCUs in the automotive industry. It builds on the legacy of the KEA series, while introducing higher memory options alongside a richer peripheral set extending capability into a variety of automotive applications. With a 2.70–5.5 V supply and focus on automotive environment robustness, the S32K product series devices are well suited to a wide range of applications in electrically harsh environments, and are optimized for cost-sensitive applications offering low pin-count options. The S32K product series offers a broad range of memory, peripherals, and package options. It shares common peripherals and pin counts, allowing developers to migrate easily within an MCU family or among the MCU families to take advantage of more memory or feature integration. This scalability allows developers to use the S32K product series as the standard for their end product platforms, maximizing hardware and software reuse and reducing time to market
标签： S32K116 S32K118 S32K142 S32K144
上传时间： 2022-04-16
上传用户：jason_vip1
这是一本英文版的MPC的MATLAB教程，讲这一块的资料太少了，故上传一本。MPC is one of the few areas that has received on-going interest from researchers in both the industrial and cademic communities.Four major aspects of model predictive control make the design methodology attractive to both practitioners and academics.This is particularly attractive to industry where tight profit margins and limits on the process operation are inevitably present. The third aspect is the ability to perform on-line process optimization. The fourth aspect is the simplicity of the design framework in handling all these complex issues.
标签： 模型预测控制
上传时间： 2022-05-05
上传用户：zhanglei193
《HeadFirstJava》是一本完整地面向对象(object-oriented，OO)程序设计和Java的学习指导用书，根据学习理论所设计，你可以从程序语言的基础开始，到线程、网络与分布式程序等项目。重要的是，你可以学会如何像一个面向对象开发者一样去思考，而且不只是读死书。 在这里，你可以会玩游戏、拼图、解谜题以及以意想不到的方式与Java交互。 在这些活动中，你还会写出一堆真正的Java程序，如一个船舰炮战游戏和一个网络聊天程序等等。 “HeadFirst系列”图文并茂学习方式能让你快速地在脑海中掌握住知识，敞开心胸准备好学习这些关键性的主题： ★Java程序语言 ★面向对象程序开发 ★Swing图形化接口 ★使用JavaAPI函数库 ★编写、测试与布署应用程序 ★处理异常；多线程 ★网络程序设计 ★集合与泛型
标签： java
上传时间： 2022-06-12
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In this presentation, we will look at what the Serial Peripheral Interface, otherwise known as the SPI, is. and how it is used to communicate data to and from the PICmicro microcontroller.SPl is frequently used when few 1/O lines are available, but communication between two or more devices must be fast and easy to implement.In this presentation, we will discuss the following topics: We will first cover an Overview of SPI This section of the tutorial will introduce you to SPI and its concepts.Next, we will examine the use of SPI on the PICmicro MCU.The details of how SPI is implemented on a PICmicro device will be examined.Then, a Code Walkthrough will be given.The walkthough will explore code for both an SPI Master and SPI Slave. The example will have the Master generate data for sending to the slave.Finally, there will be a few resources given at the end of the presentation. These resources will allow you to explore in more detail the SPI interface
标签： spi协议
上传时间： 2022-06-20
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由于高重复频率固体开关在加速器、雷达发射机、高功率微波和污染控制等领域存在的潜在优势，美国、英国、日本和韩国等都对固体开关技术进行了大量研究，从而成为近年脉冲功率界研究的重点1。从固体元件电路结构上，固体开关可以分成两种类型：串联结构和累加器结构。采用串联结构的固体开关生产厂家中，比较著名的有LLNL（Lawrence Livermore National Laboratory）和DTI（Diverfisied Technology Inc.），采用累加器结构的厂家中，比较著名的是LLNIL.和美国的First Point Scientific Ine.B32A我们已经研制成功了采用光纤控制的10kV绝缘栅双极型晶体管（Isolated Gate Bipolar Transistor，IGBT）固体开关，尽管在该固体开关中采用的光纤收发器比较便宜，但光纤控制部分还是比较昂贵的。在一定的应用环境，如脉冲宽度为几微秒到十几微秒，可以采用脉冲变压器来控制IGBT。从文献[1]表明：只要脉冲同步和缓冲电路设计适当，即可确保固体开关中不会出现过压。尽管脉冲变压器隔离控制在同步精度和驱动波形一致性方面不如光纤控制，但还是可以用来控制IGBT固体开关。采用脉冲变压器控制IGBT的主要优点是价格便宜，但其存在的主要问题是输出脉冲宽度范围比较有限和绝缘性能如何保证的问题。在脉冲变压器控制的IGBT固体开关中，脉冲变压器设计非常重要，因此下面只讨论脉冲变压器的绝缘问题和IGBT固体开关的实验结果。
标签： 脉冲变压器
上传时间： 2022-06-22
上传用户：20125101110
最近入手了Pandaboard的高清摄像头子板一块，顺便学习了MIPICSI2接口，给各位网友分享一下。这个高清摄像头采用ov5640芯片，500万像素，支持自动聚焦，这也是手机和平板里面用得比较多的一种cmos传感芯片。OV5640同时支持并向和串行数据传输，当然串行传输（也就是MIPI方式）速度更快，能够支持更高的分辨率，一般手机里300万或者500万像素的摄像头一般都是MIPI接口。不妨再多提一下MIPI标准，MIPI是做移动应用处理器的几家巨头公司成立的联盟，旨在定义移动应用处理器的接口标准，其全称为“Mobile Industry Processor Interface”。现在用的比较多是MIPI框架中的摄像头标准和显示标准，即MIPICSI和MIPI DSI。CSI代表Camera Serial Interface，而DSI代表Display Serial Interface。现在CSI已经升级到CSI2.0版本，即MIPICSI2接口。本文所提到的Pandaboard 高清摄像头使用的就是MIPICSI2接口。先贴一个Pandaboard安装好摄像头子板的图片：
上传时间： 2022-06-24
上传用户：jason_vip1
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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介绍针对dsPIC33FJ32MC204或同系列单片机使用入门。1、开发环境选择开发环境：MPLAB IDEV8.80编译软件：MPLABC30，其中v3.25版本C语言编译器 pic30-gcc.exe，见下图。尝试过使用最新开发环境MPLABXIDEV1.95配合数种编译器均无法对程序编译通过。2、程序代码PROJECT工程建立通过菜单中Project->Project Wizard 按步骤建立。建立完成后添加源文件c、头文件h、链接文件gld，见下图。其中源文件FIRST.c文件如下：#include"p33FJ32MC204.h"int main（）{while（1）；
标签： dspic33fj32mc204 入门
上传时间： 2022-07-24
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A German-Chinese company with almost 100 years experience in automobileelectronics industry·Founded in 2004 Joyson and Preh in 1919·Working since 1988 in the automotive industry·More than 40 years experience in industrial auomationOne of the biggest merger of China and Germany,company in automotive industry,listed in Shanghai(code 600699)Strong worldwide market:·Ningbo/China·Headquarters·Automotive Components Division (Joyson)Bad Neustadt/Deutschland·Electronics Division(Preh)·Automation Division(PIA)
上传时间： 2022-08-09
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