verilog计数器

Altera DE2 开发板试验2 第1部分VHDL答案(Altera DE2 Lab2 part1 VHDL answer)

Cypress USB 的主从FPGA 控制实现代码(USB controller)

BCH3.c,提供m<21以下的所有码长的BCH编解码模块。以供大家参考。谢谢(BCH encoder&decoder GF(2^m) m<21)

用walsh算法实现的符号数乘法器,asic流片时,可以不用公司的付费乘法器的ip core.(algorithm using the symbols multiplier, HDL-piece quantities. it is not necessary for the company's paid Multiplier ip core.)

1）选择一个语音信号作为分析对象，或录制一段语音信号； 2）对语音信号进行采样，画出采样前后语音信号的时域波形和频谱图； 3）利用MATLAB中的随机函数产生噪声加入到语音信号中，使语音信号被污染，然后进行频谱分析； 4）设计用于处理该语音信号的数字滤波器，给出滤波器的性能指标，画出滤波器的频率响应； 5）对被噪声污染的语音信号进行滤波，画出滤波前后信号的时域波形和频谱，并对滤波前后的信号进行比较和分析； 6）回放各步骤的语音信号，给出相应处理程序及运行结果分析。(1) Select a voice signal as an analysis object, or record a voice signal 2) sampling the voice signal, draw the waveform and frequency spectrum of the time domain before and after sampling the speech signal 3) using the random function in MATLAB generated noise was added to the speech signal, the speech signal to be contaminated, and then spectrum analysis 4) for processing the speech signal, the digital filter design, given the performance of the filter to draw the filter' s frequency response 5) on the noise pollution of the speech signal is filtered, time-domain waveform and spectrum draw before and after filtering the signal before and after filtering, and the signal for comparison and analysis 6) playback of the speech signal for each step, given the results of the corresponding processing procedures and run analysis.)

本代码实现了sd卡接口驱动功能，实现了在sdmode下50Mbps的读写速率，也可以通过添加额外的命令来实现100Mbps的速写速率，而文件系统的实现可以在本接口的基础上来轻松完成，从而实现针对你的应用所需要的功能，本代码非常易读，大家可以轻松看懂！

MPSK调制与解调VHDL程序源代码与仿真(MPSK modulation and demodulation process and VHDL source code and simulation)

用VHDL语言实现QPSK调制功能和解调功能,(Using VHDL language features QPSK modulation and demodulation functions,)

AD4003的Verilog程序，验证有用(Verilog code for AD4003)

说明：  ds1302时钟驱动程序，已在quartus上验证可以是直接使用(DS1302 clock driver, which has been verified on quartus, can be used directly)