verilog触发器

这是基于FPGAD的DDS（直接数字式频率合成器）信号发生器，使用的语言是硬件描述语言（Verilog），通过使用matlab生成的.mif文件，加载到ROM，IP核中，通过语言描述，可以产生频率和相位可调的模拟波形信号

基于fpga和51单片机的等精度频率计，通过fpga对信号进行采集，数据传给单片机计算，再由12864进行显示，可进行频率，周期，脉宽，占空比，幅值等的测量。(Fpga and 51 microcontroller based precision frequency meter, through fpga for signal acquisition, data to the microcontroller to calculate, and then by 12864 for display, can be measured frequency, period, pulse width, duty cycle, the amplitude and the like.)

verilog实现的FPGA三态以太网链路层通信代码，里面有状态机，并按各个模块的功能分了文件夹，还有说明文档，自定义帧的产生和接收，开发环境为Xilinx ISE，测试无误。(verilog realization FPGA Tri-Mode Ethernet link layer communication code, which the state machine, according to the function of each module sub folder, as well as documentation, self-defined frame generation and reception, the development environment for the Xilinx ISEtest and correct.)

高速FIFO，verilog设计。速度高达130Mhz(High-speed FIFO, verilog design. Speed up to 130MHz)

内容有VHDL语法总结及相应的实例应用，每个程序我都亲自试过，特别适合初学VHDL的同学们。常用的程序有 设计一个M序列发生器，M序列为“11110101”、 设计一个彩灯控制器，彩灯共有16个，每次顺序点亮相邻的四个彩灯，如此循环执行，循环的方向可以控制。设计一个跑马灯控制器。一共有8个彩灯，编号为LED0~LED7，点亮方式为：先从左往右顺序点亮，然后从右往左，如此循环往复等等。这些都是我在考试前熬夜总结的，很有用。如果配合开发板用的话，那就更好了 ( VHDL syntax summary content and the appropriate application instance, every program I have personally tried, especially for students of beginner VHDL. Common program has designed a sequence generator M, the M series is 11110101 , a lantern controller design, a total of 16 lights, each sequence of four adjacent lights lit, so the cycle execution cycle direction can be controlled. Marquee design a controller. A total of eight lights, numbered LED0 ~ LED7, the lighting way: first left to right order of light, and then right to left, so the cycle and so on. These are all I stay up all night before the exam summary, very useful. When combined with the development board, then so much the better )

软件开发环境：ISE 7.1i 仿真环境：ModelSim SE 6.0 1. 多功能数字钟(Software development environment: ISE 7.1i simulation environment: ModelSim SE 6.0 1. Multi-function digital clock)

Encryption has become a part and parcel of our lives and we have accepted the fact that data is going to encrypted and decrypted at various stages. However, there is not a single encryption algorithm followed everywhere. There are a number of algorithms existing, and I feel there is a need to understand how they work. So this text explains a number of popular encryption algorithms and makes you look at them as mathematical formulas.

自己写的一个tcd1209d的时序驱动代码，是用verilog语言编写的，可以借鉴(Of write a tcd1209d of timing-driven code, Verilog language, can learn from)

da6578的IIc时序驱动verilog，次代码仿真验证通过，有需要的同志可以下载下来参考，同时需要IIC时序的操作，也可以下载下来进行参考来做一些相应的接口时序来完成你们对应的工作。  

说明：  通过iic总线实现数据的读和写，以及基于的modelsim测试。(Through the iic bus to achieve data reading and writing,and based on the modelsim test.)