sdrm 仿真模型

说明：  用FPGA于32进行SPI单向通信，FPGA向32放松发送数据(One-way SPI communication is carried out in 32 with FPGA, and data is sent to 32 with ease by FPGA.)

一本很经典的IC设计中文入门书籍，由任艳颖，王彬编著，翻印几百万册(A very classic introduction to Chinese in IC design book, compiled by Ren Yanying and Wang Bin, reprinted millions of copies)

利用康芯公司的FPGA芯片设计制作频率计，实现对频率的测量。(Kang core using FPGA chip design company frequency meter, realize the frequency measurements.)

AHB 总线从控响应由总线主控在系统内发起的转让。从控使用HSELx从解码器的选择信号来确定当应对总线转换。所有其他信号所需的传输，如地址和控制信息，将会生成由总线主控。

海德汉绝对式编码器代码，VHDL语言编写(Heidenhain absolute encoder code, VHDL language)

说明：  combinatorial modules

说明：  资料是本人根据相关文献资料用vhdl语言编写的旋转机械鉴相信号倍频的程序，multifre1.vhd是倍频程序，multifre1.vwf是仿真波形文件，stp1.stp是虚拟逻辑分析仪signaltap文件。该倍频程序可以直接使用，可以设置倍频数，修改实体参数N即可。(According to the literature data is the information I have written in with vhdl Rotating Machinery Kam believe that the procedure multiplier number, multifre1.vhd is the multiplier process, multifre1.vwf is the simulation waveform files, stp1.stp a virtual logic analyzer signaltap file. The multiplier process can be used directly, you can set the multiplier number, modify the parameter N can be solid.)

基于FPGA的DDS相位累加器，连接至存有波形数据的rom后再接至DA可以输出对应的波形(abcdefghijklmnopqrstuvwxyz)

说明：  sd卡的verilog代码，包含一些sd卡例程(SD card Verilog code, including some SD card routines)

FPGA实现的卷积编码，1/2编码效率，可在此基础上改为其他码率，如2/3 3/4等