DDR（双速率）SDRAM控制器参考设计，xilinx提供

使用STM32官方提供的DSP库进行FFT，虽然在使用上有些不灵活（因为它是基4的FFT，所以FFT的点数必须是4^n），但其执行效率确实非常高效，看图1所示的FFT运算效率测试数据便可见一斑。该数据来自STM32 DSP库使用文档(. Using the official DSP library provided by STM32 for FFT is not flexible in use (because it is the FFT of base 4, so the number of FFT points must be 4 ^ n), but its execution efficiency is really very efficient, as can be seen from the test data of FFT operation efficiency shown in Figure 1. This data comes from STM32 DSP library usage document)

Verilog code to calculate Sobel

正弦波电流驱动的无刷直流电机性能分析，通过分析方波电流驱动与正弦波电流比较，得出正弦波电流驱动电机性能较好(Sine wave current drive brushless DC motor performance analysis, by analyzing the square-wave current drive with sine wave current comparison, the sine-wave current drive motor performance is better)

基于vhdl的pid控制器设计，可以用quartus等软件实现。数字控制系统pid设计源代码。(Pid controller based on VHDL design, can use the quartus software implementation, etc. Digital pid control system design of source co)

ADD MOV MOVi SUB四指令cpu设计，qutartus，(Design of four-instruction CPU)

vhdl code for 8051 processor

8级cordic 算法verilog (8 cordic algorithm verilog)

开源的ULPI IP核，可用于USB3300芯片的开发(openSource ULPI IP core which could be used for USB3300 chip development)

关于verilog的知识点和关键点的总结(Summary of knowledge points and key points of Verilog)

本例为TLC7524接口电路VHDL原程序-Example for the TLC7524 interface circuit VHDL original procedure