cy68013 vhdl code and usb high speed

基于FPGA设计的电子密码锁是一个小型的数字系统，与普通机械锁相比，具有许多独特的优点：保密性好，防盗性强，可以不用钥匙，记住密码即可开锁等。(FPGA-based design of the electronic code lock is a small digital system. It has many unique advantages：good privacy and security , it do not need the key but remember password to unlock, and so on while it compare to ordinary mechanical locks.)

采用VHDL编写的频率计，模块划分清晰易懂，基本原理为检测一个闸门脉冲周期内的信号次数，采用四段数码管显示

用FPGA实现SDRAM的操作，具体操作见内部说明文件-FPGA SDRAM with the operation of the specific see internal note

ADS8325caiyang konfgzhi

vhdl code fpga for lcd 2*16

说明：  ? 熟悉IIC协议总线协议，采用IIC总线对图像采集传感器寄存器进行配置，并转换为RGB565格式。 ? 利用异步FIFO完成从摄像头输出端到SDRAM 和SDRAM 到VGA 接口各跨时钟域信号的传输和处理。 ? 利用 SDRAM 接口模块的设计，实现了刷新、读写等操作；为提高SDRAM 的读写带宽，均采用突发连续读写数据方式；并采用乒乓操作实现 CMOS 摄像头与VGA的帧率匹配。 ? 利用双线性插值方法实现对图像640×480到1024×768的放大操作。 ? 完成VGA显示接口设计。(Familiar with IIC protocol bus protocol, IIC bus is used to configure the register of image acquisition sensor and convert it into RGB565 format. Asynchronous FIFO is used to transmit and process signals across clock domain from camera output to SDRAM and SDRAM to VGA interface. With the design of SDRAM interface module, refresh, read and write operations are realized. In order to improve the read and write bandwidth of SDRAM, burst continuous read and write data mode is adopted, and table tennis operation is used to achieve frame rate matching between CMOS camera and VGA. The bilinear interpolation method is used to enlarge the image from 640*480 to 1024*768. Complete the VGA display interface design.)

在spartan－3e上利用八个led实现流水灯效果-Spartan-3e in the use of eight led lights to achieve the effect of flowing water

CAN VHDL Code. Behavioral implementation of CAN bus interface.

NCO 代码设计 使用VHDL语言 (nco)

Implementation of Image Processing Algorithms in FPGA Hardware.