verilog实现的“状态机实现AD574数模转换”

Fun little FPGA that plays a portion of Habanera

实现4种常见波形正弦、三角、锯齿、方波（A、B）的频率、幅度可控输出（方波 --A的占空比也是可控的），可以存储任意波形特征数据并能重现该波形，还可完成 --各种波形的线形叠加输出。 (Achieve the four kinds of common sine wave, triangle, sawtooth, square wave (A, B) the frequency and amplitude controlled output (square wave- A duty cycle is controlled), can store arbitrary waveform feature data and can to reproduce the waveform, it can perform- all kinds of linear superposition of the output waveform.)

FPGA设计中的60进制计数器，通过2个七段数码管系那是出来。代码简单易懂，仿真通过，而且在FPGA开发板上加载显示成功。很有用的入门代码。

Verilog module containing a synthesizable CRC function // * polynomial: (0 1 8) // * data width: 8-Verilog module containing a synthesizable CRC function //* polynomial: (0 1 8) //* data width: 8

xilinx 开发板原程序，双口RAM控制-Xilinx development board the original procedures, dual-port RAM control

MCP4725实现的i2c驱动程序，通过DA转换实现函数发生器(MCP4725 come ture i2c drive program,Through da conversion function generator in English)

CH4CH2CH1VHDL 数字电路参考书所有程序7-CH4CH2CH1VHDL digital circuit reference all proceedings 7

液晶的控制，有VHDL语言实现-lcd control

altera niosii SOPC helloword 学习-altera niosii SOPC helloword learning

说明：  本文研究的IIC总线控制器具有如下特征 1.兼容飞利浦I2C标准，以主机模式与外围设备进行数据通信，对IIC从机模型进行读/读，读/写，写/写，写/读[18]。 2.多主操作 3.软件可编程时钟频率 4.时钟拉伸和等待状态生成 5.软件可编程确认位 6.时钟同步设计 7.仲裁中断丢失，自动转移取消 8.开始/停止/重复启动检测/确认生成 9.总线忙检测(The IIC bus controller studied in this paper has the following characteristics. 1. Compatible with Philips I2C standard, data communication between host mode and peripheral devices, read/read, read/write, write/write, write/read for IIC slave model [18]. 2. Multiple Main Operations 3. Software programmable clock frequency 4. Clock stretching and waiting state generation 5. Software Programmable Confirmation Bit 6. Clock Synchronization Design 7. Loss of arbitration interruption and cancellation of automatic transfer 8. Start/Stop/Repeat Start Detection/Verification Generation 9. Bus busy detection)