基于ＦＰＧＡ平台，实现了直接数字频率合成。

基于FPGA的UDP硬件协议栈， 全部用SystemVerilog写的，不需CPU参与，包括独立的MAC模块。 支持外部phy的配置，支持GMII和RGMII模式。 以下是接口 input clk50, input rst_n, /////////////////////// //interface to user module input [7:0] wr_data, input wr_clk, input wr_en, output wr_full, output [7:0] rd_data, input rd_clk, input rd_en, output rd_empty, input [31:0] local_ipaddr, //FPGA ip address input [31:0] remote_ipaddr, //PC ip address input [15:0] local_port, //FPGA port number //interface to ethernet phy output mdc, inout mdio, output phy_rst_n, output is_link_up, `ifdef RGMII_IF input [3:0] rx_data, output logic [3:0] tx_data, `else input [7:0] rx_data, output logic [7:0] tx_data, `endif input rx_clk, input rx_data_valid, input gtx_clk, output logic tx_en(UDP hardware stack, written in system verilog, do nt need CPU.Projgect includes MAC Layer,support phy configuration.support gmii and rgmii mode. the interface is as the follows: input clk50, input rst_n, /////////////////////// //interface to user module input [7:0] wr_data, input wr_clk, input wr_en, output wr_full, output [7:0] rd_data, input rd_clk, input rd_en, output rd_empty, input [31:0] local_ipaddr, //FPGA ip address input [31:0] remote_ipaddr, //PC ip address input [15:0] local_port, //FPGA port number //interface to ethernet phy output mdc, inout mdio, output phy_rst_n, output is_link_up, `ifdef RGMII_IF input [3:0] rx_data, output logic [3:0] tx_data, `else input [7:0] rx_data, output logic [7:0] tx_data, `endif input rx_clk, input rx_data)

说明：  【实例简介】用Verilog实现uart串口协议，波特率可选9600、19200、38400、115200。8位数据为，1位校验位，1位停止位。 【实例截图】 【核心代码】核心代码包括TX，RX，Baud，FIFO([example introduction] UART serial port protocol is implemented with Verilog, and the baud rate can be 9600, 19200, 38400, 115200. 8-bit data, 1 bit check bit, 1 stop bit. [example screenshot] [core code] the core code includes TX, Rx, baud and FIFO)

中值滤波实现。选择在Vivado软件上采用Verilog语言来编写中值滤波算法，搭建出完整的数据处理系统架构，通过仿真和验证来判断数据的处理效果，并在实际的设计过程中根据出现的问题提出解决方案。(Median filter implementation. The author chose Verilog language to write the median filter algorithm in Vivado software, built a complete data processing system architecture, judged the data processing effect through simulation and verification, and proposed a solution according to the problems in the actual design process.)

《数字信号处理的FPGA实现（第三版）》作者：U.Meyer-Baese 的配套源码，基于quartus9.0编写，使用的cyclone ii。其中包含FIR IIR FFT等算法的实现，对学习图像处理很有帮助。( FPGA digital signal processing (third edition) Author: U.Meyer-Baese The matching source, based on quartus9.0 preparation, the use of cyclone ii. Which includes FIR IIR FFT algorithm such as the realization of learning to image processing helpful.)

请注意： 本例的源描述包含文件类型，在学习版上不能编译及模拟， 如果您需要对此描述进行编译及模拟，请与北京理工大学 ASIC研究所联系。 另外，此例与第75例是同一个电路的不同部分的描述，可以 一起参考这两个例子的描述。-Please note : The cases include the description of the source file type, version of the study can not be compiled and simulation, if you need to compile this description and simulation, Beijing Polytechnic University and the Institute of ASIC link. Additionally, the cases of 75 cases with the first of a circuit with the different parts of the description, reference together two examples of this description.

Xilinx Sysgen User Guide

我上期做的VHDL设计方案，用于在FPGA或CPLD中实现HDB3的编码-I do view on the VHDL design options for the CPLD or FPGA to achieve HDB3 code

Top level Architecture of MIPS Processor

xlinx fpga实现fft功能，利用ip核，包含源程序及完整工程文件，直接就能使用(The fft function xlinx fpga ip-core contains the source code and complete the project file, and can be used directly)

说明：  Verilog code for implementing simple ALU.