电子书-RTL Design Style Guide for Verilog HDL540页A FF having a fixed input value is generated from the description in the upper portion of Example 2-21. In this case, ’0’ is output when the reset signal is asynchronously input, and ’1’ is output when the START signal rises. Therefore, the FF data input is fixed at the power supply, since the typical value ’1’ is output followINg the rise of the START signal. When FF input values are fixed, the fixed inputs become untestable and the fault detection rate drops. When implementing a scan design and converting to a scan FF, the scan may not be executed properl not be executed properly, so such descriptions , so such descriptions are not are not recommended. recommended.[1] As in the lower part of Example 2-21, be sure to construct a synchronous type of circuit and ensure that the clock signal is input to the clock pin of the FF. Other than the sample shown in Example 2-21, there are situations where for certain control signals, those that had been switched due to the conditions of an external input will no longer need to be switched, leaving only a FF. If logic exists in a lower level and a fixed value is input from an upper level, the input value of the FF may also end up being fixed as the result of optimization with logic synthesis tools. In a situation like this, while perhaps difficult to completely eliminate, the problem should be avoided as much as possible.
标签： RTL verilog hdl
上传时间： 2022-03-21
上传用户：canderile
如果在调谐器或电视机附近使用本机或任何其他使用微处理器的电子设备，则可能会产生图像的噪声或干扰。如果发生这种情况，请采取以下步骤将本机安装在尽可能远离调谐器或T的地方。远离调谐器或T，远离本机的电源线和输入/输出连接电缆。尤其在使用室内天线或300欧姆馈线。我们建议使用室外天线和75 Q / ohm同轴电缆Noise or disturbance of the picture may be generated if this unit or any other electronic equipment using microprocessors is used near a tuner or TV If this happens, take the followINg stepsInstall this unit as far away as possible from the tuner or T Run the antenna wires from the tuner or T away from this unit ' s power supply cord and input/output connection cables. Noise or disturbance tends to occur particularly when using indoor antennas or300 ohm feeder wires. We recommend using outdoor antennas and 75 Q/ohm coaxial cables
标签： 功放
上传时间： 2022-04-22
上传用户：tigerwxf1
基于TMS320F28335的超声波流量计硬件原理图+软件源码本文以TMS320F28335 处理器为核心，设计一种用于管道流量测量的超声波流量计。系统硬件由核心板，超声波发射和接收电路，切换电路，超声换能器，基于ADS805 的高速信号采集电路，人机交互以及电源等模块构成。采用时差法进行管道流量测量，时差测量采用SCOT 加权的广义互相关时延估计算法。本论文设计的超声波流量计具有测量速度快、准确性好、成本低等优点。关键字：C2000，超声波，流量，广义互相关算法AbstractA kind of ultrasonic flowmeter using for the pipe flow measurement is designed based onTMS320F28335 in this paper. The system hardware consists of the followINg parts: the core board,ultrasonic signal transmitter and receiver circuits, switch circuit, ultrasonic transducer, signalacquisition circuit based on ADS805, human-computer interaction module and power supplymodule, etc. The system use the method of time difference for pipeline flow measurement and thetime difference is calculated by the time-delay algorithm of SCOT weighted generalizedcross-correlation. The ultrasonic flowmeter has the features of high testing speed, high precisionand low cost, etc.Keywords: C2000,Ultrasonic, Flow, Generalized Cross-Correlation Algorithm
标签： tms320f28335 超声波流量计
上传时间： 2022-05-06
上传用户：yiyewumian
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
上传用户：蓝天小雨
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
上传用户：lostxc
The followINg table covers the main features offered by the MT7628KN and MT7628AN. Overall, the MT7628KN supports the requirements of an entry level AP/router, while the more advanced MT7628AN supports a number of interfaces together with a large maximum RAM capacity.Features· Embedded MIPS24KEc (575/580 MHz) with 64KBl-Cache and 32KB D-Cache·2T2R 2.4GHz with 300 Mbps PHY data rate· Legacy 802.11b/g and HT 802.11n modes·20/40 MHz channel bandwidth· Reverse Data Grant(RDG)· Maximal Ratio Combining(MRC)· Space Time Block Coding(STBC)· MCM 8 Mbytes DDR1 KGD(MT7628KN)·16-bit DDR1/2 up to 128/256 Mbytes(MT7628AN/KN)· SPI/SD-XC/eMMC·x1 USB 2.0 Host,x1 Ple Root Complex·5-port 10/100 FE PHY
标签： mt7628
上传时间： 2022-07-25
上传用户：wwa875
VIP专区-嵌入式/单片机编程源码精选合集系列（33）资源包含以下内容：1. Embedded Web Server Architecture for Web-based Element and Network Management关于嵌入式Web服务器的完整论文.2. 这是一个电子时钟程序,里面有显示时间子程序,还有调整,键盘等子程序!.3. 这是一个可调的PWM波程序,稍作修改就可以控制电机转速或其他设备!.4. 这是实验室在进行嵌入式开发的时候的首选.5. LCD 仿真器 一、概述 LCD仿真器是一种电子产品的辅助开发工具。目前LCD（液晶屏）在各种电子产品的使用越来越广泛.6. 提供了与《嵌入式实时操作系统及应用开发》教材配套的实验系统软件.7. 摩托罗拉公司发布的QL4的Lin总线kit,freescale网站上花钱买的.8. RTLinux的介绍.9. 嵌入式系统教学教案.10. 在UNIX 系统下得到字符点阵信息嵌入式系统设计中消除内存丢失的策略matlab循环变量小技巧hard disk 1.8# device driverC程序中如何转换GB2312.11. 针对周立功2104板子的一个秒表程序,可以通过按键分别查看秒表的时间,分,秒..12. 难得一见的"EDA技术与PLD设计"课程的课件.13. C语言函数库文件.14. 本程序用汇编语言编写.15. 嵌入式系统设计中消除内存丢失的策略.16. 这是有关DM642开发板的相关幻灯片.17. 周立功2106板子的启动程序代码,包括初始化,中断向量表,和头文件..18. 嵌入式资料光盘,刚刚下的,还没有来得及看,如果感兴趣可以先看看,含有资料文档..19. 320X240LCD仿真程序 320x240lcd仿真程序.20. 嵌入式我们老师的课件.优点用处..呵呵....呵呵后.21. MiniGui API函数大全及详细介绍。.22. S3C2410开发板与PC机的通信 客户端和 服务器端的代码 以及makefile文件 服务器为开发板 执行 S3 PC机为客户机 执行host.c.23. GIMP Dynamic Text是GIMP的插件程序.24. keil c公司网站下载的一些实例教程程序!.25. 移植到ＧＢＡ上运行的ＬＩＮＵＸ的代码.26. 用protel 99 设计的可编程彩灯控制器 可显示16个画面 8*8矩阵.27. ucos for vc ucos compiled and run in vc.28. 嵌入式的综合内容.29. 基于ARMs3c44b0的键盘输入输出i/o的在 led上显示出来的程序.30. PC-Lint是一个历史悠久.31. PC-Lint是一种静态代码检测工具.32. C++ 的难学.33. TCP/IP Lean: Web Servers for Embedded Systems, Second Edition.34. 一个多功能的遥控编码程序,其中有较为详细的键盘扫描程序和用于推动红外发射的发码程序.35. eCos/RedBoot for勤研ARM AnywhereII(4510) 含全部源代码.36. Windows CE是微软为嵌入式设备打造的操作系统.37. 现在开发的硬件良好产品 结合C和ASM一起开发 可以混合用C里的函数库.38. Altera recommends the followINg system configuration: * Pentium II 400 with 512-MB system memory (fa.39. Cyclone1C20的Nios开发板完整原理图Protel格式.40. Interface Fiche Technique : Langage de programmation : Visual Basic 5.0 Support : Une version de Win.
上传时间： 2013-04-15
上传用户：eeworm
