A RECOVERY DEVICE AND CONTROL METHOD FOR REALIZING ANY RATE SERVICE ACCESS SIGNAL

摘要

A recovery device and control method is used for realizing any rate service access signal, therein the device include a clock and data recovery unit, a control unit, and a clock synthesizer; the control unit communicates with the clock and data recovery unit via a bus on two-direction; the control unit sets the clock synthesizer via bus and keeps the clock synthesizer outputting an accurate clock as required in the clock and data recovery unit; a reference clock outputted from the clock synthesizer is directly inputted to the clock and data recovery unit, which is supplied to the clock and data recovery unit for use. By a method for calculating the common multiple, the rate of access service could be identified automatically, and the service is locked by using common frequency or multiple frequency of the service, the service could be recovered accurately without error code using a method for locking the low frequency service by adopting the high frequency sampling, and the frequency offset produced by a specific encoding structure can be overcome effectively.