FPGA

基于FPGA的DDS信号源设计，32位相位累加器，产生可调频率(FPGA-based DDS signal source design, 32-bit phase accumulator to generate tunable frequency)

用Verilog代码实现的乒乓操作，用Verilog代码实现的乒乓操作(Verilog pingpong)

说明：  4位数码扫描显示电路,我们控制一个七段LED需要8个输出端口；如果要输出四位十进制数，就需要32的输出端口，这将占用大量的端口资源。采用串行扫描显示，我们只需要8+4共12个端口即可。其原理是：用一个四位的输出端控制，某一时刻只选中其中的一个LED（输出为‘1’表示选中），八位的输出端将该LED所需要显示的值输出；然后四位的输出端值改变，选中下一个LED。这样依次类推。如果选择的频率很快，达到50Hz以上，由于人眼的视觉暂留效应，看起来就像4个LED同时显示。 设计一个程序，输入四个一位十进制数，用4个LED显示出来。CLK采用频率可调信号发生器，逐渐改变频率，观察扫描频率的改变对输出效果的影响。 输入：连续脉冲，逻辑开关；输出：七段LED。 (4 digital scanning display circuit, we need to control a seven-segment LED output port 8 If you want to output four decimal numbers, you need the output port 32, which will take up a lot of ports. Serial scans showed, we need only 8 of 12 ports can be+4. The principle is: the output of four with a control, a time to select only one LED (output 1 is selected), 8 output of the LED by the need to show the value of the output then The output value of the four changes, select the next LED. This and so on. If you select the frequency rapidly, reaching more than 50Hz, as the human eye s persistence of vision effect, looks like a 4 LED display simultaneously. Design a program, enter a decimal number four, with four LED display. CLK signal generator with adjustable frequency, gradually changing the frequency of observed changes in scan frequency effect on the output. Input: Continuous pulse, logic switches output: seven-segment LED.)

很好的学习FPGA嵌入式的资料！适合初学者和工程师参考！(Good learning FPGA embedded information! Suitable for beginners and engineers reference!)

（1）能够测试10HZ~10MHZ的方波信号； （2）电路输入的基准时钟为1HZ，要求测量值以8421BCD码形式输出； （3）系统有复位键； （4）采用分层次分模块的方法，用Verilog HDL进行设计，并对各个模块写出测试代码； （5）具体参照说明文档（包含源代码，仿真图，测试波形，详细的设计说明）(A square wave signal capable of testing 10HZ~10MHZ; (2) the reference clock input by the circuit is 1HZ, and the measured value is output in the form of 8421BCD code; (3) the system has a reset key; (4) adopt the method of layering sub sub module and design with Verilog HDL; (5) write test simulation program.)

verilog实现计时器timer，可直接用于芯片开发中。(verilog achieve timer, it can be directly used for chip development.)

FPGA驱动高输入电压范围的ADS8509芯片，采样范围广，适合前端大信号处理(FPGA drive a high input voltage range ADS8509 chip, sampling a wide range, suitable for large front-end signal processing)

异步串行传输的verilog hdl 功能文件以及测试文件(The verilog hdl source and the testbench of asynchronous serial transmission )

并行读写14路串口数据，数据被写入FIFO，在收到读写信号后，SPI发送数据出去(Parallel read and write 14 serial port data, SPI send data)

它包含与试验台硬件描述语言(VHDL)一半加法器试验台意味着项目制造商宣布他要什么时候能给一个术语 请点击左侧文件开始预览 ！预览只提供20%的代码片段，完整代码需下载后查看 加载中 侵权举报