a vhdl_program used for flat detect

本程序是锁相环的仿真程序，具有接收端载波同步的功能。注释详尽，程序规范。发端的调制方式有单载波调制，BPSK调制，QPSK调制可供选择。程序中有星座图，锁相环的频差、相差图，以及解调后的基带波形。(This program is a phase-locked loop simulation program, the with carrier synchronization receiving end function. Notes detailed program specifications. The originator of the modulation scheme to choose a single carrier modulation, BPSK modulation, QPSK modulation. Program constellation diagram, the PLL frequency difference, a difference of FIG, and the demodulated baseband waveform.)

ULPI UTMI conversion

利用分频可以产生一系列脉冲，根据输入脉冲的不同决定你得到的一系列脉冲频率-The use of sub-band can produce a series of pulses, according to input pulse of different decisions you have a series of pulse frequency

频率计，ＶＥＲＩＬＯＧ代码，含详细　中文注释．-Cymometer, VERILOG code, containing a detailed Chinese Notes.

使用PWM控制LED亮度的单片机C代码，共计十个亮度。(PWM control of LED brightness microcontroller C code, for a total of ten brightness.)

实现了UART的底层协议，加入了控制器，其波特率可以根据使用进行调整；发送模块、接收模块相互独立，互不影响。(Realization of the underlying protocol UART, joined the controller baud rate can be adjusted according to use transmission module, receiver module are independent of each other.)

理想三相转单相 基于 spwm 的逆变器，可调(Ideal three-phase switch to a single the phase based spwm inverter)

A controller for DDR2 on FPGA with vhdl, content testbench, model and textfile-generation/data-detection using python.

关于USB开发的verilog开发程序，非常的全面，学习FPGA开发时用得着。(About USB development verilog development process, very comprehensive, learning FPGA development time worthwhile.)

msk的verilog程序 利用ＦＰＧＡ实现-MSK procedures for the use of Verilog FPGA realize