Using FPGA realize DDS, can be frequency, amplitude from hardware to complete

开关数据加载到寄存器并显示的设计与实现.3． 设计一个可以把4个开关的内容存储到一个4位寄存器的电路，并在最右边的7段显示管上显示这个寄存器中的十六进制数字。我们使用到去抖动模块clock_pulse， 用btn[0]作为输入；8位寄存器模块，用btn[1]作为加载信号；7段显示管上的显示模块x7segbc；分频模块clkdiv，用以产生模块clock_pulse和x7segbc的clk190时钟信号。(Design of switching data is loaded into the register and display the.3. design and implementation of a 4 switch content storage circuit to a 4 bit register, and in the 7 section of the most on the right shows the register in the sixteen decimal digital display tube. We used to go to the jitter module clock_pulse, with btn[0] as the input 8 bit register module, as the loading signal by btn[1] 7 segment display module on the x7segbc pipe frequency module clkdiv, clk190 clock signal for generating module clock_pulse and x7segbc.)

一种学习用的小程序，主要用与VHDL仿真的全加器的一段代码！大家可以下载进行修改于仿写-A learning to use a small program, mainly used with the VHDL simulation of a full-adder code! You can download the modified Yu Fang Xie

同步串行数据发送电路SSDT的基本功能是将并行数据转换成串行数据并进行同步发送。系统写入和读出时序完全兼容Intel8086时序。 系统以同步信号开始连续发送四个字节，在发送中出现5个1时插入一个0，在四个数据发送结束而下一次同步没有开始之前，发送7FH，这时中间不需要插入零 -synchronous serial data transmission circuit SSDT the basic function is to convert parallel data into serial and the same this step. System write and read sequential fully compatible Intel8086 timing. Synchronized signal system to start sending four consecutive bytes, in this emerging 5 1:00 insert a 0, at the end of four data sent and the next synchronization not started before, sending seven FH, then the middle is not inserted

ZardWars Files ------------------------------

generate sine wave. Inputs : Amplitude, phasein, frequency

说明：  直接数字式频率合成器DDS设计、Verilog。 产生的信号可以是正弦波或方波、三角波、锯齿波等，自选。 采用DDS技术，将所需生成的波形写入ROM中，按照相位累加原理合成任意波形。 此方案得到的波形稳定，精度高，产生波形频率范围大，容易产生高频。 本实验在设计的模块中，包含以下功能： （1）通过 freq 信号输入需要的频率的值； （2）通过 wave_sel 信号选择所需的波形； （3）通过 amp_adj 信号选择波形放大的倍数。(DDS design of direct digital frequency synthesizer, Verilog. The generated signal can be sinusoidal or square wave, triangular wave, sawtooth wave and so on, optional. By using DDS technology, the required waveforms are written into ROM, and arbitrary waveforms are synthesized according to the principle of phase accumulation. The waveform obtained by this scheme is stable, accurate and easy to generate high frequency waveform. This experiment includes the following functions in the designed module: (1) Input the required frequency value through freq signal; (2) Choosing the required waveform by wave_sel signal; (3) Select the multiplier of waveform amplification by amp_adj signal.)

rebuild file in check for

数控分频器的输出信号频率为输入数据的函数。用传统的方法设计,其设计过程和电路都比较复杂,且设计成 果的可修改性和可移植性都较差。基于VHDL 的数控分频器设计,整个过程简单、快捷,极易修改,可移植性强。他可利用 并行预置数的加法计数器和减法计数器实现。广泛应用于电子仪器、乐器等数字电子系统中。-NC divider output signal frequency is a function of input data. Using traditional methods of design, process and circuit design are complex and can modify the design of the results are poor and portability. NC VHDL divider based on the design, the whole process simple, fast, easy to modify, strong portability. He can use preset number of parallel addition and subtraction counter counter to achieve. Widely used in electronic equipment, musical instruments and other digital electronic systems.

LED闪烁的VHDL代码

turbo码的verilog程序，有意者请下载。(turbo code verilog procedures Interested parties please download.)