奇数分频和倍频(只需修改参数就可以实现较难得基数分频和倍频)-Odd frequency and frequency-doubling (just modify the parameters can be achieved relatively rare sub-base frequency and octave)

在VHDL下实现锁相环的源码和说明文档.通常用于分频或倍频时进行相位锁定.-To achieve phase-locked loop in the VHDL source code and documentation. Normally used when the frequency or frequency-doubling phase locked.