锁相环的verilog源代码，其中包括发送端，鉴相器，滤波器，压控振荡器的源代码，主要实现输入输出信号的跟踪，捕获和锁定，使输入输出信号在较短时间内达到同步。-This is a verilog code for PLL, including transmitor, PDF, Filter, VCO and so on. It mainly realize the input and output signal tracking, capture and lock, make the in