原创，帧同步器的Verilog代码，在FPGA上验证实现过，无误。作为通信系统帧传输的仿真，有限状态机同步态和失步态的切换仿真。-Original Verilog code for frame synchronization, verify the implementation on the FPGA, and correct. Frame transmission as the communication system simulation, finite state machine synchronous state and the loss of the switching simulation of gait.