利用VHDL语言编写的一个crc功能模块，可下载到FPGA实现功能

fft变换三个中的一个（站长：三个代码算一个）-fft transformation of a three (head : It is a code 3)

xilinx应用指南xapp260的中文翻译版本。利用 Xilinx FPGA 和存储器接口生成器简化存储器接口。本白皮书讨论各种存储器接口控制器设计所面临的挑战和 Xilinx 的解决方案，同时也说明如何使用 Xilinx软件工具和经过硬件验证的参考设计来为您自己的应用（从低成本的 DDR SDRAM 应用到像 667 Mb/sDDR2 SDRAM 这样的更高性能接口）设计完整的存储器接口解决方案。(The use of Xilinx FPGA and Memory Interface Generator to simplify memory interface. This white paper discusses the various memory interface controller design challenges facing Warfare and Xilinx solutions, but also explains how to use Xilinx Software tools and hardware-proven reference designs to be for your own With (from low-cost DDR SDRAM applications to such as 667 Mb/s This higher performance DDR2 SDRAM interface) design a complete deposit Storage device interface solution.)

This is the Spartan 3E tutorial_02.

说明：  用verilog语言实现计算反正切函数，在软件无线电中解调PM/FM中使用的尤为频繁。上传的压缩包是modelsim工程，基于6.5c,里边包含一个完整的PM波产生以及解调过程的matlab文件仿真，并取其中间的I和Q支路做为verilog文件的输入，并将其借条输出与MATLAB实际解调输出作比较。 鉴相器的设计基于CORDIC算法，其精度取决于迭代的深度。由于工程实际运用只需要解调出atan值，并不需要绝对的值，所以并没有给予加权，需要的同学可以自己加上。(Calculated using verilog language arc tangent function, the software radio demodulation PM/FM is particularly used frequently. From the archive is modelsim project, based on 6.5c, inside the PM contains a complete demodulation process of wave generation and simulation matlab file, and whichever is the middle of the I and Q branch verilog file as input, and its IOU demodulated output and actual output of MATLAB for comparison. Phase detector design is based on CORDIC algorithm, its accuracy depends on the iteration depth. As the practical application of engineering demodulated atan value only and does not need absolute value, and there is no weight given to the need of the students can add their own.)

Huffman encoder decoder verilog

在利用Verilog在FPGA平台上输出正弦波，实现芯片为Cyclone II 484C8，有管脚分配-In the use of Verilog in the FPGA platform, the output sine wave, the realization of the chip for Cyclone II 484C8, has pin allocation

uart发射机Verilog HDL代码(Verilog HDL code uart transmitter)

本程序用以驱动安捷伦频谱仪和脉冲信号发生器，以产生格雷码波形。(It is aim to driver the PSG and ESA to generate Golay.)

本程序是用verilog 编写的模块，用来在lcd1602上显示用tlc549采样的电压值(This program is written in verilog module, used in lcd1602 display with tlc549 sampled voltage value)

说明：  实现了QPSK的调制，使用了ise自带的dds的IP核(QPSK is modulated and the IP core of DDS is used in ise.)