m序列生成VHDL代码

xilinx公司的FPGA实现数字视频信号处理器。语言是VHDL。-Xilinx FPGA to achieve the company

等精度频率计的verilogHDL的实现,我花了好长时间才写的哦

This is code of UVM CALLBACK function.

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. )

使用Quartus II 9.1完成俄罗斯方块游戏，只要使用有VGA和键盘接口的FPGA开发板就行实现。操作简单，使用的是VHDL和Verilog语言(Use the Quartus II 9.1 to complete the tetris game, as long as you use a VGA and keyboard interface implementation of FPGA development board. The operation is simple, the use of VHDL and the Verilog language)

MAX531串行DA芯片的VHDL驱动，我应经在实际工程中试验过！-MAX531 serial DA chip VHDL driver, I shall be in the actual project tested!

4位的booth算法加法器，对计算机组成原理的学习有帮助，verilog语言编写(4-bit adder booth algorithm, the learning of computer organization help, verilog language)

简易信号波形发生器，可以产生四种波形，频率1k-20K步进可调。学习Verilog HDL的好例子。(imple signal waveform generator, can produce four waveform, frequency 1 k-20 k step can be adjusted. Learning Verilog good example of HDL. )

FPGA的仿真实例，Verilog代码编写，过程详尽，代码易懂。第二个文档-FPGA simulation examples, Verilog coding, the process in detail, code easy to understand. The second document

说明：  Digital pre-distortion (DPD) is an advanced digital signal-processing technique that mitigates the effects of power amplifier (PA) nonlinearity in wireless transmitters. DPD plays a key role in providing efficient radio digital front-end (DFE) solutions for 3G/4G basestations and beyond. Modern FPGAs are a promising target platform for the implementation of flexible wireless DFE solutions, including DPD.