VHDL数字系统设计和工程实践3，包含原理，真值表和原理图，以及VHDL源代码....

Fpga开发应用，jtag方面的源代码，VHDL-Fpga development and application, jtag in the source code, VHDL

I2C端口的FPGA实现，网上较多，但发现不少有问题，这个是在网上代码的基础上修改过，验证可行。-I2C port FPGA, online more, but found that many problems This is a code on the Internet on the basis of the revised test feasible.

出租车的计费系统，通过这个文件可以清楚地了解出租车的计费原理。-Taxi billing system, the adoption of the document can be a clear understanding of the accounting principle of a taxi.

说明：  802.16d 的卷积编码和解码的VHDL实现(802.16d cc encoding and decoding,writing in VHDL)

说明：  利用Matlab/simulink实现电力仿真，其中单相逆变可用于多电平变流器的基础使用，本案例提供了不同调制手段实现逆变的模型(Matlab / Simulink is used to realize power simulation, in which single-phase inverter can be used as the basis of multi-level converter. This case provides the inverter model with different modulation means)

具体设计内容计时功能：电子表的基本功能，要求用LCD显示，显示格式是时、分、秒；校时功能：用户可以更改当前时间。设置闹钟时间：用户可以设置闹钟时间，其操作过程与校时过程一样；整点报时开关：整点报时可以由用户设定为开启或关闭两种状态，当整点报时开启时，电子表会在整点时发出1秒的闹铃声（在UP3的板上用一个LED表示）；闹钟功能开关：闹钟由用户设定为开启或关闭，当闹钟开关开启时，如果当前时间与设置的闹钟时间一致，发出长达10秒的闹铃声；

des加密算法的verilog语言的实现-des encryption algorithm to achieve the Verilog language

一种RISC结构8位微控制器的设计与实现-The structure of a RISC micro-controller" s 8 Design and Implementation

RTL8369开发资料，包括手册，图纸，Layout说明等等(RTL8369 development information, including manuals, drawings, Layout Guide.)

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)