本文使用实例描述了在 FPGA/CPLD 上使用 VHDL 进行分频器设 计，包括偶数分频、非 50％占空比和 50％占空比的奇数分频、半整数 （N+0...

fpga hardware hevc implementation

在fpga中对GPS信息采集程序。具有很好的参考性(In the fpga in the GPS information collection procedures. Has a very good reference)

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)

Xilinx user constraints file for the cpld xc9536 or xc9536xl or xc9572 or xc9572xl

vivado lwip 应用文档 基于zynq 7020(vivado lwip example text of zynq)

本例介绍直接合成带阻滤波器的方法，n阶滤波器能实现n个传输零点(A direct synthesis technique of a new class of bandstop coupled resonator elliptic filters is presented. Two different coupling schemes, which both include source–load coupling are used. The first coupling and routing scheme is the standard folded structure used in implementing bandpass elliptic filters with transmission zeros using resonators.)

顶级模块名称是 "_register32"。它包括许多包括 files(instance)、 _dff、 _dlatch、 和盖茨。 你可以看到整体的图表中，像 RTL 查看器后, 合成。 _register8 包含在顶部模块

利用电话远程系统，通过密码验证来实现对家庭电器的智能控制。-The use of long-distance telephone system, via a password to verify the implementation of the intelligent control of household electrical appliances.

说明：  适合入门及进阶的100个VHDL练习题，从易到难(100 VHDL exercises for beginners and advanced students, from easy to difficult)

Rotary Encoder Reading the Rotary Encoder and indicating the selection through a LED placed on the front panel. Events counter for the Rotary Encoder and displaying the events on the front panel Project: events counter for the rotary encoder and displaying the events on the SSD Pmod (Seven-Segments Display Programable module).