各种常用模块的VHDL描叙实例，PDF格式

verilog编写的DAC2902程序，用于高速的数模转换(verilog language,using for DAC2902 digital analog converter)

Hexadecimal to 7 segments

华为公司学习verilog的资料，绝密资料，想学习verilog编程，想学习FPGA，想以后进华为公司的都可以看看。(Huawei learning verilog information, confidential information, want to learn verilog programming, want to learn FPGA, think later into the Huawei can see.)

这篇是利用VHDL语言控制LCD1602芯片来显示时钟的简单代码。LCD1602顾名思义是一种02*16，即为两行十六列的液晶显示屏，液晶两行，每行可以显示16个字符，但是CGRAM及CGROM里面一共有160个字符，包括阿拉伯数字，英文字母大小写，常用符号及日文。每个字符对应于一个ASCII码值，在液晶显示屏上显示对应的字符时候，只需要将对应的ASCII码写到DDRAM中就好。

基于FPGA设计ADC0809采样控制器原代码-FPGA-based design ADC0809 Sampling Controller source

Triscend supports the use of the Model Technology ModelSim logic simulator for VHDL simulation of designs implemented in the Configurable System Logic (CSL) portion of a Triscend device.

Farrow 滤波器设计经典文章，作者是：FM.Gardner，farrow滤波器设计的始祖，经典值得推荐！（两篇文章）(Farrow filter design classic article, the author is: FM.Gardner, farrow filter design ancestor, classic worth recommending! (Two articles))

FPGA对SDRAM进行读写测试程序，亲测有效无误。(FPGA reads and writes test programs for SDRAM.)

说明：  熟悉IIC协议总线协议，采用IIC总线对图像采集传感器寄存器进行配置，并转换为RGB565格式。 利用异步FIFO完成从摄像头输出端到SDRAM 和SDRAM 到VGA 接口各跨时钟域信号的传输和处理。 利用 SDRAM 接口模块的设计，实现了刷新、读写等操作；为提高SDRAM 的读写带宽，均采用突发连续读写数据方式；并采用乒乓操作实现 CMOS 摄像头与VGA的帧率匹配。 利用双线性插值方法实现对图像640×480到1024×768的放大操作。 完成VGA显示接口设计。(Familiar with IIC protocol bus protocol, IIC bus is used to configure the register of image acquisition sensor and convert it into RGB565 format. Asynchronous FIFO is used to transmit and process signals across clock domain from camera output to SDRAM and SDRAM to VGA interface. With the design of SDRAM interface module, refresh, read and write operations are realized. In order to improve the read and write bandwidth of SDRAM, burst continuous read and write data mode is adopted, and table tennis operation is used to achieve frame rate matching between CMOS camera and VGA. The bilinear interpolation method is used to enlarge the image from 640*480 to 1024*768. Complete the VGA display interface design.)

I2C MASTER DESIGNED by Verilog