FPGA design of the guiding principles, it is classic! Want to give everyone easy

这是一个很好的基于verilog的串口通信422模块，已经经过多次验证，绝对可靠，可直接使用，本人已在工程中多次使用，无误差(This is a good serial communication based on Verilog 422 module, has been repeatedly verified, absolutely reliable, can be used directly, I have repeatedly used in the project, no error)

verilog 模糊PID 通过修改MIF文件 可以完成单个参数整定(FUZZY pid by verilog HDL)

EDA 正弦信号发生器：正弦信号发生器的结构有四部分组成，如图1所示。20MHZ经锁相环PLL20输出一路倍频的32MHZ片内时钟,16位计数器或分频器CNT6，6位计数器或地址发生器CN6，正弦波数据存储器data_rom。另外还需D/A0832（图中未画出）将数字信号转化为模拟信号。此设计中利用锁相环PLL20输入频率为20MHZ的时钟，输出一路分频的频率为32MHZ的片内时钟，与直接来自外部的时钟相比，这种片内时钟可以减少时钟延时和时钟变形，以减少片外干扰 还可以改善时钟的建立时间和保持时间，是系统稳定工作的保证。CNT6用来将32MHZ进行8分频得到4096HZ的频率提供给CN6与data_rom时钟信号。由CLK端输入20MHZ的时钟信号，在DOUT端就可输出稳定的正弦信号。(Sine signal generator has the structure of four parts, as shown in figure 1 below. The 20 MHZ phase lock loop PLL20 output all the way of frequency doubled within 32 MHZ slice clock, 16 counter or prescaler CNT6, six counter or address generator CN6, sine data storage data_rom. In addition to D/A0832 (shown in not draw) will digital signal into analog signals. This design using the phase lock loop PLL20 input frequency for 20 MHZ clock, the output of the frequency of all points frequency of 32 pieces (MHZ clock, and comes directly from the external clock, compared to this piece of clock can reduce the clock in delay and clock deformation, to reduce the interference of Can also improve the establishment of the clock time and keep time, is the system stability of assurance. CNT6 used to will and to 8 MHZ get 4096 HZ dividing the frequency to provide CN6 and data_rom clock signal. The input by CLK 20 MHZ clock signal, in DOUT end can output stable sine signals. )

Verilog很不错的进阶书!看完后对数字模拟集成电路设计有个深入的认识!-This book is very important for a designer who wants to design a great digital circuits!

program in hdl that this open mind in digital resources

freeDev数字应用开发板中的七段数码管的IP核的verilog实现-freeDev digital application development boards in the seven-segment digital tube of the IP core implementation of the verilog

FPGA Verilog控制FLASH片外读写(Verilog Controls FLASH Out-of-Chip Read-Write)

数字下变频（DDC）在如今基于软件无线电的架构中对系统的整体性能决定性的影响，代码为基于Matlab的4通道DDC程序，程序中可以根据需要调节滤波器等参数评估DDC的性能对于使用FPGA实现DDC有较大的参考价值(Digital down conversion (DDC) in today' s architecture based on software radio system a decisive impact on the overall performance of the code for the 4-channel DDC Matlab-based program, the program can be adjusted according to filter parameters such as the use of performance assessment FPGA DDC DDC has achieved great reference value)

very good code for edge detection based on vhdl programming.

maxplus2为开发环境 vhdl编写的 键盘 程序-maxplus2 VHDL development environment for the preparation of the keyboard procedures