移位相加硬件乘法器,基于FPGA的VHDL语言编写的,含有全部文件

Crossroad traffic lights with visualization in tcl/tk and verilog code

说明：  uart implementation and documentation, this describes the basic steps in building your own uart module on verilog and programming them on an fpga device

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. )

说明：  在FPGA上实现CAN总线SPI接口通信，使用Verilog语言(Realize SPI interface communication of CAN bus on FPGA, using Verilog language)

sparc org, vhdl rtl code

不错的介绍verilog的电子文档，对于入门级的新手有不错的参考价值-A good introduction to verilog electronic documents, for the novice there is a good entry-level reference value

protel中fpga封装库3，非常难找的-protel library in fpga package three, very difficult to find the

dds ad9910配置的verilog hdl程序，模块化设计，输入待配置的数据，字长，启动信号，即可自动产生时序，完成一次配置，模块还有done握手信号，方便用户调用时，反复多次配置。(dds ad9910 configuration verilog hdl program, modular design, the input data to be configured, word length, the start signal, the timing can be automatically generated, complete a configuration, the module has done handshake, user-friendly call, repeatedly configuration .)

UG586 - Zynq-7000 All Programmable SoC and 7 Series Devices Memory Interface Solutions v2.3 User Guide ( ver2.3, 18511 KB )(UG586- Zynq-7000 All Programmable SoC and 7 Series Devices Memory Interface Solutions v2.3 User Guide ( ver2.3, 18511 KB ))

介绍了基于VHDL的可编程分频器在波形发生器中的应用的方法，利用这一方法， 可使波形频率在大范围内变化。()