VHDL Programing

this is a Multiplier and Accumulate (MAC). written in VHDL

说明：  五阶CIC梳状积分滤波器，可以综合，非常有参考价值(Fifth-order CIC points comb filter, can be integrated and very useful)

用Verilog语言实现的FPGA UART独立收发模块 思路简单，代码简洁。在Lattice LFE3EA VERSA开发板上验证通过,编译器Lattice Diamond. 功能：串口收到数据后立即回传，此后每一秒串口数据+1再发送。(Using Verilog language independent of FPGA UART transceiver idea is simple, concise code. Development board in Lattice LFE3EA VERSA verified by the compiler Lattice Diamond. Features: Serial data is received immediately after the return, then every second serial port and then send the data+ 1.)

基于Montgoery 算法的RSA,FPGA verilog 实现，有测试文件(Based on Montgoery algorithm for RSA,FPGA verilog implementation，bench file)

FFT的MATLAB实现。非常完整的实现FFT过程，速度很快。(The FFT in MATLAB. Contains more than one source, the FFT process. Learning Reference essential)

如果不考虑占空比，直接利用计数器来进行分频，则占空比会发生变化。下面程序实现1：1的三分频。-if not duty cycle directly counter to the use of sub-frequency, duty cycle will change. Below a program : a third of the frequency.

自己写的扩展功能时钟，增加了年、月日计时，verilog代码，已在spatarn3实现。-Write their own extensions clock, an increase of the year, month day time, verilog code in spatarn3 realize.

altera fpga verilog 设计的基于查找表的DCT程序及zigzag扫描程序，已经过matlab 和modelsim 验证，文件中包含TESTBENCH ，直接可用-altera fpga verilog design table DCT-based search procedures and zigzag scanning procedures, and ModelSim matlab has been verified, the document contains TESTBENCH, directly available

LPDDR2 SDRAM memories compliant to JEDEC JESD209-2.

基于FPGA实现蜂鸣器播放音乐的功能 使用芯片为EP2C8Q208C8N,使用普通蜂鸣器，由于频率不同可实现放歌功能，本例设计的是《友谊地久天长》，使用Verilog语言编程，本例子有工程文件、仿真、波形，经过测试可以使用。(Play music based on FPGA buzzer functions using chip EP2C8Q208C8N, using ordinary buzzer, since the frequency of different functions can be realized sing, in this case the design is " Auld Lang Syne" , using Verilog language programming, this project examples files, simulation, waveform, tested can be used.)