FLEXIBLE BIT RATE CLOCK RECOVERY UNIT

摘要

A flexible bit rate clock recovery unit (30) is provided for recovering a clock signal from an input data signal, where the input data signal is transmissible at different bit rates. The flexible bit rate clock recovery unit includes a plurality of fixed rate clock recovery units (32), where eac h fixed rate clock recovery units is operative at a different rate to extract an intermediary clock signal from the input data signal; a comparator (34) for generating an encoded data signal based on an amplitude characteristic of ea ch of the intermediary clock signals, where the encoded data signal is indicati ve of the clock signal associated with the input data signal; and a selector (3 6) for selecting one of the intermediary clock signals based on the encoded dat a signal, thereby recovering the clock signal from the input data signal.