用于sopc builder添加组件用的ps/2 键盘 ipcore

基于LabVIEW FPGA的频谱估计与分析(the power spectrum estimation and analysis based on LabVIEW FPGA)

emmc协议的实现代码，包含了SD协议，usb实现协议(The implementation code of EMMC protocol)

（1）距离算法研究和设计； （2）采用FPGA/CPLD实现。 -(1) distance algorithm and design (2) using FPGA/CPLD implementation.

说明：  用verilog编写的LVDS接口驱动程序，采用IOSERDES技术实现，经过Spartan6 FPGA调试验证，有完整的工程。(The LVDS interface driver written in verilog is implemented using IOSERDES technology. After Spartan6 FPGA debugging and verification, there is a complete project.)

Verilog 语言编写 PCI9054 控制器的接口电路，实现 PCI总线到本地 8 位总线的转接控制(The Verilog language writes the interface circuit of the PCI9054 controller to realize the transfer control of the PCI bus to the local 8 bit bus)

：随机脉宽调制是解决交流调速系统 中声学噪声的直接有效方法。随机零矢 量分 布是一种很好 的随 机方法，但其不对称的开关函数使其不适用于传统的电流采样方法。通过仿真表明 PWM周期中点采样的方 法无法得到准确的平均值，在分析不对称模式引起的纹波电流对电流平均值影响的基础上，提出了一种适合 于 RZV分布 的电流采样方法 。仿真结果证实该方法简单可行 。 -: Random pulse width modulation speed control system to solve the exchange of acoustic noise in a direct and effective way. Random zero vector distribution is a good random method, but the asymmetrical switching function so that it does not apply to the traditional current sampling methods. PWM cycle through the simulation shows that the mid-point sampling methods can not be an accurate, on average, the analysis of asymmetric mode ripple current caused by the impact on the current average value based on the proposed distribution of a suitable RZV current sampling methods. The simulation results confirmed that the method is simple and feasible.

ALTERA Cyclone1C20 Nios开发板，protel99格式-ALTERA Cyclone1C20 Nios，protel99

本程序包含：EEPROM的功能模型(eeprom.v)、读/写EEPROM的verilog HDL 行为模块（eeprom_wr.v）、信号产生模块（signal.v）和顶层模块(top.v) ，这样可以有一个完整的EEPROM的控制模块和测试文件，本文件通过测试。(This procedure includes: EEPROM of the functional model (eeprom.v), read/write EEPROM acts of verilog HDL modules (eeprom_wr.v), signal generator module (signal.v) and top-level module (top.v), this can have a EEPROM complete control module and test document, this document is to pass the test.)

交通灯通过数码管显示，几种模式可调，还可以时间可设，适合初学者入门参考学习。(LED traffic lights can be set to several modes adjustable time beginners reference ~ ~ ~)

HSSDRC IP core is the configurable universal SDRAM controller with adaptive bank control and adaptive command pipeline. HSSDRC IP core and IP core testbench has been written on SystemVerilog and has been tested in Modelsim. HSSDRC IP core is licensed under MIT License