和picoblaze完全兼容的mcu ip core

基于VHDL语言的DPLL电路的设计，给出了设计方案和部分源代码 (DPLL)

DE0_PWM_LED_DRİ VE_Sİ MULATİ ON

mdio配置BCM5461，实现PHY初始化及通信相关寄存器的配置(mdio configure PHY)

简单uart，verilog语言编写，已经经过测试，有需要的可以看看(Simple uart, Verilog language, has been tested, you can see if you need it)

时间同步后即可确定每帧数据的起始位置，这样就能完整的截取下每一帧。但是，数据中还带有频偏信息。在常规的通信系统中，多普勒很小仅仅会带来很小的频偏，但是在大多普勒的情况下，频偏将非常大，20马赫的速度将会带来将近34K的频偏。因此，如何很好的纠正频偏即为本系统的难点。 OFDM中，我们将大于子载波间隔倍数的频偏称为整数倍频偏，而将小于一个子载波间隔的频偏称为小数倍频偏。频偏矫正精度只要能保证小于十分之一倍的子载波间隔，频偏就不会对均衡和解调造成影响。本文中我们借鉴这种思想，由于硬件资源限制，我们将在接收端做64点FFT，即相当于将频域划分为64份，我们将小于 的频偏称为小数倍频偏，将 整数倍的频偏称为整数倍频偏。本程序即基于SCHIMDL经典方法完成小数倍频偏纠正(After time synchronization can determine the starting position of each frame data, so you can complete the interception of each frame. However, in the data with frequency information. In conventional communication systems, doppler small will bring only small deviation, but in the case of most of the doppler, frequency PianJiang is very large, 20 Mach speed will lead to deviation of nearly 34 k. Therefore, how to good to correct deviation is the difficulty of this system. OFDM, we will be bigger than the sub-carrier spacing ratio of frequency deviation is called the integer frequency offset, and the interval will be less than a child carrier frequency offset is called decimal frequency doubling. Deviation is less than one over ten times as long as can guarantee accuracy of sub-carrier spacing, deviation will not affect balance and demodulation. This article, we draw lessons from the idea, due to the limited hardware resources, we will do 64 points FFT at the receiving end, which is equ)

VDHL的简单DEMO演示，有利于初学者学习使用(VDHL simple demo DEMO will help beginners learn to use)

4 级流水方式的8 位全加器。。。。。。(Way flow of 4 full adder 8. . . . . .)

这是由阿龙利开发的程序，以控制ADC08D1000模拟 - 数字设备中的FPGA，赛灵思的Virtex-4 SX35 FPGA此处应用，DCM的用于控制FPGA中的时钟路径，所述时钟源是AD9517该PLC控制的FPGA中的串行端口

adpcm .c程序代码，完整,通过编译仿真(ADPCM c program code, complete compiled simulation)

pc与fpga之间通过千兆以太网交换机实现网络通信(Network communication between PC and FPGA via Gigabit Ethernet switch)