8位十六进制频率计设计 根据频率的定义和频率测量的基本原理，测定信号的频率必须有一个脉宽为1s的输入信号脉冲计数允许信号；1s计数结束后，计数值被锁入锁存器，计...

AES TSAPI Retrieve Event in Non-blocking Mode

Floating Point FP multiplication is widely used in large set of scientific and signal processing computation. Multiplication is one of the common arithmetic operations in these computations. A high speed floating point double precision multiplier is implemented on a Virtex 6 FPGA. In addition, the proposed design is compliant with IEEE 754 format and handles over flow, under flow, rounding and various exception conditions. The design achieved the operating frequency of 414.714 MHz with an area of 648 slices.

modbus的fpga实现。opencores上最新版本。使用fpga实现，可以大大提高响应速度，对其功能进行模块化。(modbus of fpga implementation. opencores the latest version. Use fpga implementation, can greatly improve the response speed, its function modularity.)

四位十进制频率计的顶层控制模块，用于生成测频需要的复位及控制信号-four decimal frequency of top-level control modules, used to generate the required frequency measurement and control signals reset

这是一个FPGA的简单例程，主要是基于FPGA的232串口通信的例程-This is a simple routine FPGA is mainly based on FPGA-232 serial communication routines

mpeg-2 crcr32计算的代码，采用verilog编写，验证通过(mpeg-2 crcr32 caculate)

说明：  通过循环读写DDR3内存，了解其工作原理和DDR3控制器的写法，由于DDR3控制复杂，控制器的编写难度高，这里笔者介绍XILINX的MIG控制器情况下应用，是后续音频、视频等需要用到SDRAM实验的基础。(Through reading and writing DDR3 memory circularly, we can understand its working principle and the writing method of DDR3 controller. Because of the complexity of DDR3 control, it is difficult to write the controller. Here, the author introduces the application of Xilinx's MIG controller, which is the basis of SDRAM experiment for subsequent audio and video.)

用max+plusII编写的vhdl程序 乒乓球游戏机-with max plusII vhdl procedures for the preparation of the table tennis game

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)

精通VerilogHDL：IC设计核心技术实例详解-proficient VerilogHDL : IC design example explanation of the core technology