DDR2 SDRAM 控制器的FPGA实现

本程序是在Quartus7.2环境下编译的一个简单的(2,1,3)卷积码，能够成功地编译和仿真。(This procedure is in circumstances Quartus7.2 compile a simple (2,1,3) convolutional code, can successfully compile and simulation.)

调制解调器是在发送端通过调制将数字信号转换成模拟信号，而在接收端通过解调将模拟信号转换为数字信号的一种装置。这个程序用VHDL语言编写，实现了二进制振幅键控（2ASK）的调制与解调；二进制频移键控（2FSK）的调制与解调，二进制相位键控（2PSK）的调制与解调过程。

Farrow 滤波器设计经典文章，作者是：FM.Gardner，farrow滤波器设计的始祖，经典值得推荐！（两篇文章）(Farrow filter design classic article, the author is: FM.Gardner, farrow filter design ancestor, classic worth recommending! (Two articles))

Synchronous DRAM (SDRAM) has become a mainstream memory of choice in embedded system memory design due to its speed, burst access and pipeline features. For high-end applications using processors such as Motorola MPC 8260 or Intel StrongArm, the interface to the SDRAM is supported by the processor’s built-in peripheral module.

1、ps/2键盘输入，通过led显示ascii码 2、稍等1s可以在lcd上显示输入的字符 3、其中键盘上的backspce键是用来清屏的 4、当lcd上显示满字符时，在按下按键自动清屏，从第一行显示。-1, ps/2 keyboard input, through the led display ascii code 2, wait 1s in the lcd display characters input 3, which backspce keys on the keyboard was required to settle the screen 4, when the lcd display full of characters, the press the button automatically Qing-ping, from the first line of display.

大屏幕led点阵显示的驱动时序。 使用vhdl语言描述。其中rom文件可以使用lpm_megcore自动生成。-big screen led to the dot matrix display driver timing. The use of VHDL description language. Rom which documents can be automatically generated using lpm_megcore.

说明：  ethernet mac vhdl verilog basic

跑马灯led_horse vhdl cpldfpga-led_horse vhdl cpldfpga

用可编程逻辑器件实现PWM波形即PWM波形发生器-Using programmable logic devices that realize PWM waveform PWM Waveform Generator

说明：  VIVADO dma以及vdma 使用文档 基于ZYNQ 7020(vivado DMA&VDMA example text of zynq)