Based on VHDL+ FPGA design of the DDS signal gennerator has been through debug mode

基于verilog convolutional coding 的卷积编码(verilog convolutional coding )

关于FPGA的一些例程，包括CORDIC数字计算机的设计，RS(204,188)译码器的设计等。(Some routines on FPGA include the design of CORDIC digital computers, the design of RS (204188) decoders, etc.)

用于FPGA的反量化算法的HDL编码，包括VHDL及Verilog代码。可用于JPEG及MPEG压缩算法。-FPGA used to quantify anti-HDL coding algorithms, including VHDL and Verilog code. Can be used in JPEG and MPEG compression algorithms.

数字时钟，可以实现(1) 显示日期功能（年、月、日、时、分、秒以及） (2) 可通过按键切换年、月、日及时、分、秒的显示状态 (3) 可随时调校年、月、日或时、分、秒 (4) 可每次增减一进行时间调节 (5) 可动态完整显示年份，实现真正的万年历显示 (6) 可显示温度 (Digital clock, can be achieved (1) the date function (year, month, day, hour, minute, seconds as well) (2) through the key switch the year, month, day in a timely manner, minute, second display state (3) at any time adjust the year, month, day or time, minutes, seconds (4) can be added or deleted, a time adjustment (5) can be dynamically complete display Year, the real calendar display (6) to display temperature)

verilog实现的“BCD/七段译码器”。-verilog implementation " BCD/Seven-Segment Decoder."

这个并串转换代码是依靠同步状态机来实现其控制的。其实并串转换在实际的电路中使用还是比较多的，尤其在通信线路方面的复用和分解方面，原理上就是一个串并转换和并串转换的过程。举个简单的例子，计算机串口发送数据的过程，如果满足发送条件了，其实就是一个并串转换的过程了。好了，废话不说，看代码就是。 -And the string conversion of the code is relying on the synchronization state machine to achieve its control. In fact, string conversion circuit in the actual use of, or more, particularly in the area of communication lines and the decomposition of reuse, the principle is a string and the conversion and the conversion process and string. Here is a simple example, the computer serial port of the process of sending data, if sent to meet the conditions, but in fact is a process of conversion and a string. Well, do not talk nonsense, look at the code is.

:针对现场可编程门阵列(FPGA)芯片的特点,研究FPGA中双向端口I/O的设计,同时给 出仿真初始化双向端口I/O的方法。采用这种双向端口的设计方法,选用Xilinx的Spartan2E芯片 设计一个多通道图像信号处理系统。-: For field programmable gate array (FPGA) chip features of FPGA in the bi-directional port I/O design, the simulation is initialized at the same time two-way port I/O method. Using this design method of two-way ports, optional Spartan2E the Xilinx chip to design a multi-channel image signal processing system.

its a Fifo BASED design i also Interface DAC2904

this example exchanges the NRZ code to the MANCHESTER code with moore output

说明：  xilinx fpga各版本mmcm/pll动态配置RTL代码，包括testbench(xilinx fpga mmcm/pll drp RTL code, including testbench)