VHDL example, there are nearly a hundred examples, can be carried out in quartur...

The ElectricTM VLSI Design System is an open-source Electronic Design Automation (EDA) system that can handle many forms of circuit design, including: * Custom IC layout * Schematic Capture (digital and analog) * Textual Languages such as VHDL and Verilog (The ElectricTM VLSI Design System is an open-source Electronic Design Automation (EDA) system that can handle many forms of circuit design, including:* Custom IC layout* Schematic Capture (digital and analog)* Textual Languages such as VHDL and Verilog)

本代码介绍了使用VHDL开发FPGA的一般流程，最终采用了一种基于FPGA的数字频率的实现方法。该设计采用硬件描述语言VHDL，在软件开发平台ISE上完成，可以在较高速时钟频率（100MHz）下正常工作。该设计的频率计能准确的测量频率在1Hz到100MHz之间的信号。使用ModelSim仿真软件对VHDL程序做了仿真，并完成了综合布局布线，最终下载到芯片Spartan-II上取得良好测试效果。-the code on the FPGA using VHDL development of the general process, finally adopted a FPGA-based digital frequency method. The design using VHDL hardware description language, the software development platform ISE completed, the higher speed clock frequency (100MHz) under normal work. The design of the frequency meter can be accurately measured in a frequency of 100MHz between Hz signal. Use ModelSim VHDL simulation software to do the simulation process, and completed a comprehensive layout cabling, downloaded to the final chip Spartan-II made good on the test results.

用vhdl实现脉冲宽度可控的一简单程序 仿真环境MAXPLUS-(use VHDL to achieve controllable pulse width of a simple process simulation environment Segments-)

OFDM系统中的相位跟踪模块（Phase_Tracking）的FPGA实现-Phase_Tracking in OFDM sysytems

detailed spec for Xilinx V5 FPGA, reference for programming of FPGA, system designer or ASIC designer.

本文首先对多功能车辆总线的基本原理进行了简要的概述，接着对其实时协议进行了分析，然后对 MVB2 类设备控制器的功能及其功能模块的划分设计进行了详细的分析；最后对各功能模块进行了编程实现，并给出了仿真验证波形。(Firstly, the basic principle of the multifunction vehicle bus are briefly outlined, then analyze the real time protocol, then carried out a detailed analysis of the classification of the design function and the function module of the MVB2 device controller; finally, the function of each module of the program, and gives the simulation waveforms.)

NIOS II IDE 编程， 定时器测试程序，仅供参考。-NIOS II IDE programming timer testing procedures, for information purposes only.

verilog实际例子，非常适合初学者学习(verilog practical examples, very suitable for beginners to learn)

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

东芝ccd产品tcd1209驱动程序，生成1209所需的驱动波形(toshiba ccd tcd1209 )