USB IPcoreIP核 包含文档(带说明)

实现基于NIOS的 EP3C16与加速度传感器NMA7455的IIC基本通信(Realization of based on NIOS EP3C16 and acceleration sensor NMA7455 IIC of basic communication )

说明：  该源码包是2.0版本的AMBA总线的Verilog语言模型，主要包括5个部分：AHB总线仲裁器，AHB-APB总线桥接器，AHB总线上从设备ROM模型，AHB总线上从设备RAM模型，参数定义。(This source code package is the model of V2.0 AMBA bus of ARM company, It mainly includes the following five parts: the AHB arbiter,AHB-APB bridge, AHB_Rom_Slave, AHB_Ram_Slave,Defines.)

详细的说明了FPGA设计的整个流程 FPGA设计全流程Modelsim>>Synplify.Pro>>ISE(Detailed description of the FPGA design flow of the entire FPGA design flow full Modelsim> > Synplify.Pro> > ISE)

根据软件无线电的思想，提出了一种新颖的数字信号处理算法，对QPSK信号的相位进行数字化处理，从而实现对QPSK信号的解调.该算法允许收发两端载波存在频差，用数字锁相实现收发端载波的同步，在频偏较大的情况下，估算频偏的大小，自适应设置环路的带宽，实现较短的捕获时间和较好的信噪性能。整个设计基于XILINX公司的ISE开发平台，并用Virtex-II系列FPGA实现。用FPGA实现调制解调器具有体积小、功耗低、集成度高、可软件升级、扰干扰能力强的特点，符合未来通信技术发展的方向。(According to the idea of software radio, a novel digital signal processing algorithm, the phase of QPSK digital signal processing, enabling the demodulation of QPSK signals. This algorithm allows the sending and receiving ends of the carrier frequency difference exists, using digital phase-locked to achieve synchronization of sending and receiving end of the carrier, in the case of large frequency offset, frequency offset estimation of the size, adaptive set the loop bandwidth to achieve shorter acquisition time and better noise performance. The whole design is based on the company XILINX ISE development platform, and Virtex-II series with the FPGA. FPGA realization of a modem with a small size, low power consumption, high integration, software upgrades available, the characteristics of strong interference interference, in line with the future direction of ICT development.)

基于FPGA实现蜂鸣器播放音乐的功能 使用芯片为EP2C8Q208C8N,使用普通蜂鸣器，由于频率不同可实现放歌功能，本例设计的是《友谊地久天长》，使用Verilog语言编程，本例子有工程文件、仿真、波形，经过测试可以使用。(Play music based on FPGA buzzer functions using chip EP2C8Q208C8N, using ordinary buzzer, since the frequency of different functions can be realized sing, in this case the design is " Auld Lang Syne" , using Verilog language programming, this project examples files, simulation, waveform, tested can be used.)

sdram 代码在最后要强调的是，本专题以技术为主，由于篇幅的原因，不可能从太浅的方面入手，所以仍需要有一定的技术基础作保证，而对内存感兴趣的读者则绝不容错过，这也许是您最好的纠正错误认识的机会！

JPEG标准下图象压缩的vhdl实现工程，文件包括一个图像。-JPEG image compression standard works of VHDL realize that the document includes an image.

流水线乘法器与加法器 开发环境：Modelsim（verilog hdl）(Multiplier and adder pipeline development environment: Modelsim (verilog hdl))

这也是VHDL语言编写的一个小程序，对于VHDL入门很有帮助~~(This is a small program VHDL language, VHDL entry-helpful ~ ~)

clock for spartan 3 evaluatoin board