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
针对嵌入式产品程序更新问题,提出了一种基于IAP技术的STM32单片机在线固件升级方案,设计了STM32单片机最小系统硬件电路和USB转串口通信电路,并给出了Bootloader程序、APP程序、PC上机程序的实现流程.实验结果表明,该方案具有简单实用、稳定性高、维护成本低和设备使用效率高的特点,适用于嵌入式产品升级.For the problem of updating embedded products program,an online firmware upgrade scheme of STM32 single chip microcomputer based on IAP technology is proposed.This scheme not ONLY elaborates the principle of IAP technology in detail but also provides the design of the minimum system hardware circuit of STM32 MCU,the design of USB for serial communication circuit,and the implementation flow of Bootloader program,APP program and PC program.The experiment results show that the scheme is simple,practical and highly stable.In addition,it can be used to actual embedded product upgrading,significantly reducing maintenance costs and improving the efficiency of equipment.
上传时间： 2022-03-25
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This manual documents the Microcontroller profile of version 7 of the ARM® Architecture, the ARMv7-M architecture profile. For short definitions of all the ARMv7 profiles see About the ARMv7 architecture, and architecture profiles on page A1-20.ARMv7 is documented as a set of architecture profiles. The profiles are defined as follows: ARMv7-A The application profile for systems supporting the ARM and Thumb instruction sets, and requiring virtual address support in the memory management model. ARMv7-R The realtime profile for systems supporting the ARM and Thumb instruction sets, and requiring physical address ONLY support in the memory management model ARMv7-M The microcontroller profile for systems supporting ONLY the Thumb instruction set, and where overall size and deterministic operation for an implementation are more important than absolute performance. While profiles were formally introduced with the ARMv7 development, the A-profile and R-profile have implicitly existed in earlier versions, associated with the Virtual Memory System Architecture (VMSA) and Protected Memory System Architecture (PMSA) respectively.
标签： arm
上传时间： 2022-06-02
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Spartane-6 LXand LXT FPGAs are available in various speed grades, with -3 having the highest performance. The DC and AC electrical parameters of the Automotive XA Spartan-6 FPGAs and Defense-grade Spartan-6Q FPGAs devices are equivalent to the commercial specifications except where noted. The timing characteristics of the commercial(XC)-2 speed grade industrial device are the same as for a-2 speed grade commercial device. The -2Q and -3Q speed grades are exclusively for the expanded(Q) temperature range. The timing characteristics are equivalent to those shown for the-2 and-3speed grades for the Automotive and Defense-grade devices.Spartan-6 FPGA DC and AC characteristics are specified for commercial (C), industrial (), and expanded (Q) temperature ranges. ONLY selected speed grades and/or devices might be available in the industrial or expanded temperature ranges for Automotive and Defense-grade devices.
上传时间： 2022-06-19
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German universities and scientists have repeatedly set the intermational standard in drive technology. Identification and active compensation of natural frequencies in oscillatory mechanics, status controls with monitoring structures incorporating acceleration sensors, adaptive compensation of measurement system deficiencies, self-adjusting detent torque compensation… everything invented with ONLY a single aim in mind: to continue improv-ing the motion control, dynamics, precision and processing speed of your machines. For the industrial applicabability of this technology scientific publications in proceedings and laboratory test rigs are not enough. These features consequenty need to be converted into cost-efficient and easily manageable products. That 's exactly what we have done.So in future, if you should need more than today ' smarket can offer you, now everything isgoing to be alright. With our new high-performance ServoOne drive series you will experi-ence
标签： servoone
上传时间： 2022-06-24
上传用户：kingwide
Note: Before commissioning the value of the connected mains voltage must be set in the servo controller(factory setting=3×400 V AC). More detailed information see chapter 4"Commissioning".通讯接口所有的Servo-One系列均有USB及TCP/IP通讯接口，可通过LT-I公司的Drive-Manager5软件进行通讯，进行相关参数的读写和现场调试，详情请参考章节.…软件调试。Servo-One Junior:X9（USB1.1）TCP/IP（开发中）Servo-One:X2（USB1.1）X3（TCP/IP）Note: The faults can be acknowledged in accordance with their programmed reaction(ER) or reset via a 24 V-reset(X9/10)(ER.).Attention: Faults marked with a dot can ONLY be reset, after the cause of the fault has been eliminated.显示为当前版本V5.4.0同时，相应的USB接口驱动也在对应的安装文件夹内，例：C:\Program FileLTI DRiVES GmbHILTi DriveManager 5.4.0drivers
标签： servoone
上传时间： 2022-06-24
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摘要：本系统以ICL8038集成块为核心器件，制作一种函数信号发生器，制作成本较低。适合学生学习电子技术测量使用。ICL8038是一种具有多种波形输出的精密振荡集成电路，只需要个别的外部元件就能产生从0.001Hz~30KlHz的低失真正弦波、三角波、矩形波等脉冲信号。输出波形的频率和占空比还可以由电流或电阻控制。另外由于该芯片具有调制信号输入端，所以可以用来对低频信号进行频率调制。关键词：函数信号发生器频率调制Abstract：The system ICL8038 integrated block as the core device，producing a kind of function signal generator，producing low cost.Suitable for students to learn the use of electronic technology measurement.ICL8038 is a kind of multi-precision oscillator waveform output integrated circuits，a separate external components ONLY need to be able to generate from the 0.001Hz ~30KHz low-distortion sine wave，triangle wave，square wave pulse signal，etc..Output waveform of the frequency and duty cycle can also be controlled by a currentor resistance.In addition，as the chip has a modulated signal input terminal，it can be used to low-frequency signal is frequency modulation.
上传时间： 2022-07-04
上传用户：zhanglei193
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（58）资源包含以下内容：1. veriloghdl语言工具书.2. 嵌入式词典查询.3. 基于ZigBee的无线网络技术.4. IO 口模拟232通讯程序使用两种方式的C程序.5. 用Turbo C 实现动画的一个简单的实现方法 这种简单方法利用cleardevice()和delay()函数相互配合.6. dsp2812系列开发办的原理图.7. 此程序为网络通信的16位校验累加和的经典程序。虽然简单但是很经典。代码简洁.8. 触摸式人行灯控制器原理图 触摸式人行灯控制器原理图.9. 3310LCD的C51驱动程序,还不错哦.10. 一些常用的LCD的C51驱动程序,还不错哦.11. NXP示例编码集,Software that is described herein is for illustrative purposes ONLY which provides custom.12. W78E516B在系统编程的上位机程序.13. 使用TI TMS2407 实现SVPWM同步电机控制算法。源代码在闻廷科技的2407开发板上已经调试成功。.14. Nucleus Kernel Demo Full source code.15. Altera CPLD矩阵键盘一个很不错的Altera芯片程序.16. 基于Nios II的串口通信.17. The combined demo is dedicated for S1C33L05, so DMT33L05 should be used to load and run the demo. F.18. 用CPLD驱动SJA1000 CAN控制器.19. arm uart program lpc2104.20. 嵌入式PLC,基于8051F020,在KEIL上开发,可实现自定义ＰＬＣ功能.21. SMDK2410原理图protel格式和PCB库元件.22. 功能：调用IAP服务程序实现Flash ROM的读/写操作向Flash ROM地址1000H处写入10个数据.23. 功能：由KEY1键使系统进入空闲状态.24. WDT功能试验。使用WDT的定时模块.25. 功能：使用CCU的4个模块.26. s3c2440开发板can控制器sja1000驱动.27. 一个3分频器。可进一步改装成实际需要的分频器使用.28. 通过软件的仿真,硬件的调试,实现串口数据的传输,开发环境包括C-C++与汇编语言..29. ICD2原理图（protel格式、带usb接口和串口）.30. 免費分享版網路硬碟 01.創意風格首頁 02.申請會員 03.密碼查詢 04.會員容量限制 05.上傳檔案支援 Persits.Upload Dundas.Upload Lyf.31. 是一个ARM214系连的最小系统原理图,希望能多爱好嵌入是开发的人员有帮助.32. ds1621的c51驱动,带12864液晶驱动..33. ds1302时钟代码.34. LCD显示屏驱动sed1335驱动.35. 汉字显示字库及程序源码14*16标准字库.36. 14*16字库生成器升级版.37. This utility downloads code to Philip LPC 2000 series chips.38. 测试ARM的外围SDAM的状态和参数.39. 三星44B0上的MP3源码.40. CPLD 的程序,分频器.
上传时间： 2013-07-23
上传用户：eeworm
VIP专区-嵌入式/单片机编程源码精选合集系列（67）资源包含以下内容：1. 这是一个实用的I2C应用实例.2. Far Memory Support is ONLY available in the PK51 package. If you have an CA51, DK51, or Evaluation.3. 这是一个i2c通信协议的说明书.4. MSC 1210 A/D Conversion for 1 input signals (-2.5V ... +2.5V) Inputs pairs AIN0-AIN1 read in an in.5. 该程序是一个描述四角铁甲虫机器人调试过程的程序.6. 基于plilips ARM 芯片LPC2200系列,使用ADC模块的通道0、1进行电压的测量.7. LPC2200系列ARM芯片的FLASH功能测试,调用IAP服务程序.8. JEN-ZBKIT-A快速使用,Zigbee开发板最佳选择..9. Jennic5131简介.开发ZIGBEE的最佳选择芯片..10. Jennic5121芯片简介.开发ZIGBEE的最佳选择..11. 开发zigbee的最佳选择开发板,由陈工科技提供.开发板介绍..12. zigbee开发的最佳选择平台.陈工科技提供的开发板,软件使用说明.主芯片是使用jennic的SOC zigbee芯片..13. zigbee技术简要介绍.主要应用于家居智能,工业控制..14. 关于ZIGBEE的一些疑问点的解答.对于ZIGBEE入门非常有用..15. zigbee的一个应用方案.基于Zigbee无线通讯的智能卡设备设计概述.值得参考..16. 用avr mega128读取spi串行字库.17. 用AVR Atmega128驱动多串口芯片Tl164C554A的程序.18. readSD2000 c.19. 这是我自己编写的一个运用了中断.20. 这是一个用c语言实现一个主机到多个从机进行通信的51源代码.21. 使用串口下载vxworks映象的方法,在文章中包括了详细的操作步骤和相应图示.22. 基于AT91SAM9260的U-boot的源代码.23. 基于AT91SAM9260的bootloader.24. PIC控制1702 原理图+源程序.25. AT91SAM9260在WinCE操作系统下的BSP移植代码（Bin文件）.26. uCOSII 在LPC3180上的移植代码.27. ep9315开发板的原理图.原厂的作品,很好的参考.28. 自制C51编程器,附原理图+源程序,支持多种C51芯片烧写.29. 这是一个五分频电路设计.30. 10010序列检测.31. 以AT89C51为控制芯片设计时钟控制.32. cc2420 zigbee芯片的最新资料20070319.33. cc2430 zigbee芯片的最新资料20070319.34. 详细的无线键盘,鼠标,无线桥 开发文档.包含电路原理图,电路板光汇文件.FIREWALL, 驱动程序等.有此文档,就可以完全直接生产出来无线键盘,鼠标,无线桥.整个一套完整的解决方案..35. DSP课程设计,实现FFT算法,对初学者有参考价值.36. 没有错误的ARM9 -S3C2440 开发板原理图.37. 英文版zigbee协议.38. 学习cpld的朋友注意了.39. 数字竞赛抢答器的制作.40. ARM通讯程序,PC机测试 ARM通讯程序,PC机测试.
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上传时间： 2013-06-29
上传用户：eeworm
