tcp/ip master

一个4*4矩阵键盘的VERILOG接口程序设计（FPGA）-A 4* 4 matrix keyboard interface program Verilog Design (FPGA)

DDR控制器的VHDL源代码.采用FPGA实现DDR接口控制器,适用于Altera的FPGA,最高频率可到100M-DDR controller VHDL source code. Using FPGA DDR interface controller, applicable to Altera FPGA, the highest frequency available 100M

多个MATLAB设计滤波器的方法程序以及图形实现(number MATLAB filter design methods and procedures and Graphics)

xilinx的时序约束实验，通过阅读本文档，你可以用全局时序约束来轻松提高已有的项目的系统时钟频率，同时你还可以用映射后静态时序报告以及布局布线后静态时序报告来分析你的设计性能(Xilinx timing constraints of the experiment, by reading this document, you can use the overall timing constraints to easily enhance existing projects the system clock frequency, at the same time you can also use static timing report after mapping, as well as after placement and routing static timing analysis report to you design performance)

使用IEEE.STD_LOGIC_1164.ALL; - 取消对以下库声明，如果用符号或无符号值using--算术功能 - 使用IEEE.NUMERIC_STD.ALL; - 取消对以下库声明如果instantiating--任何Xilinx基元在这代码.--库UNISIM; - 使用UNISIM.VComponents.all;实体看门狗端口（SYSRST：在STD_LOGIC; SYSCLK：在STD_LOGIC; WR：在STD_LOGIC; DATAIN：在STD_LOGIC_VECTOR（7 DOWNTO0）; RESETOUT：出STD_LOGIC; debugStates：出STD_LOGIC_VECTOR（1 DOWNTO0）; debugDivider：出STD_LOGIC; debugFlag：出STD_LOGIC）;年底看门狗，看门狗建筑行为issignal timeoutSelect：STD_LOGIC_VECTOR（1 DOWNTO0）;信号timerRestart：STD_LOGIC;信号timerEnable：STD_LOGIC;组件wdtcntl端口（调试：出STD_LOGIC_VECTOR（1 DOWNTO0）;系统时钟：在STD_LOGIC; SYSRST：在STD_LOGIC; WR：在STD_LOGIC; DATAIN：在STD_LOGIC_VECTOR（7 DOWNTO0）;重新启动：从STD_LOGIC; timerEnb：出STD_LOGIC; timerSel：出STD_LOGIC_VECTOR（1 DOWNTO0））;最终组件;组件wdt_timer端口（dbDivider：出STD_LOGIC; DBFLAG：出STD_LOGIC; SYSRST：在STD_LOGIC; SYSCLK：在STD_LOGIC;启用：在STD_LOGIC;重启：在STD_LOGIC; RESETOUT：出STD_LOGIC; timeoutSel：在STD_LOGIC_VECTOR（1 DOWNTO0 ））;结束部分; begincontroller：wdtcntl端口映射（debugStates，系统时钟，SYSRST，WR，DATAIN，timerRestart，timer

学习ALU的设计方法。 2、用HDL语言采用行为描述的方法完成74181的逻辑设计 。(Learn the design method of ALU. 2, use HDL language to use behavioral description method to complete 74181 logical design.)

HART 官方资料-HART协议采用基于Bell202标准的FSK频移键控信号，在低频的4-20mA模拟信号上叠加幅度为0.5mA的音频数字信号进行双向数字通讯，数据传输率为1.2kbps。(Official information-HART HART protocol based Bell202 standard frequency shift keying FSK signal at low frequencies 4-20mA analog signal amplitude is 0.5mA superimposed on the two-way audio digital signal digital communication, data transfer rate of 1.2kbps.)

几个fpga竞赛的设计例-Several Example FPGA design contest

ALTERA Cyclone1C20 Nios开发板，protel99格式-ALTERA Cyclone1C20 Nios，protel99

学习ISE的好资料，想要使用XILINX芯片进行开发必看(ISE learning good information, want to use a must-see XILINX chip development)