SD卡上有音频部分！希望对大家有用！

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

说明：  Xilinx 公司Spartan-6系列FPGA实现LVDS，带Modelsim仿真文件，已综合。(Xilinx Spartan-6 Series FPGA implements LVDS with Modelsim simulation file, which has been synthesized.)

Vhdl实现计算exp功能 在apex20k上经过验证-Vhdl achieve in terms exp function on proven apex20k

说明：  1、能正确显示输入信号频率； 2、测量频率范围为1Hz ~ 999999Hz； 3、测量结果以十进制数字显示； 4、能测量幅值较小的信号频率； 5、有自动刷新输出数据的功能（如5s刷新一次）； 6、有自检模块（如产生100Hz的校准方波）；(1. It can correctly display the input signal frequency; 2. The frequency range of measurement is 1Hz ~ 99999hz; 3. The measurement results are displayed in decimal; 4. It can measure signal frequency with small amplitude; 5. It has the function of automatically refreshing the output data (e.g. once in 5S); 6. Self checking module (such as generating 100Hz calibration square wave);)

DSP与FPGA时序接口模块，已经经过测试，保证读写稳定(The Interface of DSP to FPGA)

Verilog for SPI Core source code

SPI控制器，基于VERILOG描述，分模块设计，共6个模块，时钟产生模块，移位模块，主模块，从模块，定义模块，顶层模块。(SPI controller, based on the VERILOG description, sub-module design, a total of six modules, clock generation module, shift module, main module, from the modules, custom module, top module.)

VHDL之二進制轉BCD碼之程式碼，算完整的(Of binary to BCD code VHDL code, operator complete)

wavelet transform of a signal,it is important and useful code to trans form frequency to time domain

《CPLDFPGA嵌入式应用开发技术白金手册》源代码，涉及FPGA/CPLD的各个方面，键盘扫描，LED扫描等简单程序及滤波器等的设计(" CPLDFPGA platinum embedded application development technology handbook" source code, related to FPGA/CPLD all aspects of the keyboard scanning, LED scanning filters, such as simple procedures and design)