向上和向下计数器在不同的机制

本文针对如今我国视频监控的需要，设计并完成了一种基于FPGA芯片的视频监控系统。该系统使用Verilog HDL语言描述整个硬件架构，使得系统性能更为稳定，操作更为简单。该系统通过OV7670摄像头获取图像数据从CMOS图像传感器引入FPGA，并编写了总线接口以便将数据交给Nios Ⅱ处理器处理。经过FPGA采集、

在赛灵思的FPGA上实现turbo码的编码程序,使用Verilog语言实现。(Implemented on Xilinx FPGA in the turbo coding principle, the use of Verilog language.)

针对电力电子领域的需求，采用自然采样法设计了一个全数字三相SPWM信号产生系统IP软核．通过数字频率合成技术实现了对电源频率的辅确控制．使电源频率精度达到16位．其中。通过调节控制参数．分别实现了电源频率与载波频率的7级、8级控制．最后。搭建了基于FPGA的测试系统．验证了系统功能的正确性．(According to the requirement of power electronics, the natural sampling method for the design of a full digital three-phase SPWM signal generation system. The power frequency of IP core is the auxiliary control is implemented through digital frequency synthesis technology. The power frequency accuracy of 16. By adjusting the control parameters, 7 and 8 levels of power frequency and carrier frequency are realized respectively. Finally, the control of the power frequency and carrier frequency is realized. A test system based on FPGA is built, which verifies the correctness of the system function)

通信IC设计的第二章Verilog参考学习代码，方便初学者学习入门，供学习参考用The codes of Chapter1 of《Communication IC Design》(The codes of Chapter2 of《Communication IC Design》)

802.11a Transmitter implementation Using Verilog

说明：  设计了六相感应电机的控还原 制平台的硬件结构及其各个组成部分,控制平台结构主要由DSP控制系统和主驱动电路系统以及检测电路系统组成。控制系统采用TI公司的TMS320F2812快速DSP控制芯片。 (This paper designs the hardware structure of the six-phase motor control system and introduces every component. The control platform consists of DSP control system, main drive circuit system and detection circuit system .The control system adopts TMS320F2812 DSP chip of TI Company. 更多还原 )

说明：  “基于 ROM 的 LCD图片显示实验 ”中利用 FPGA 片上存储资源存储图片，并通过 LCD接口将图片显示到 LCD屏幕上。但是由于 FPGA 片上存储资源有限，只能存储分辨率较小的图片(In the experiment of LCD image display based on ROM, FPGA on-chip storage resources are used to store pictures, and the pictures are displayed on LCD screen through LCD interface. However, due to the limited on-chip memory resources of FPGA, it can only store images with smaller resolution)

FPGA implementation of simple Multi-tone Electronic Keyboard using DE2-115 board with a PS/2 keyboard and speaker

用verilog编程的TCON模块（时序控制器）的程序(Verilog programming module with TCON (timing controller) program)

应用背景256、分 ；  16；FFT执行一个基2快速傅里叶变换FFT架构。在一个等级的基础上，每一个等级都有自己的蝴蝶和等级，并用记忆从彼此分离交织器。 ；该FFT可以执行calcualations关于连续和数据流的数据（一个数据一套接一个的），多了，输入和输出通过对，增加带宽加倍。并；关键技术256、分 ；  16；FFT