MULTI PHASE CLOCK AND DATA RECOVERY SYSTEM

摘要

A multi-phase clock and data recovery circuit system including a voltage controlled oscillator including plural identical structural cells coupled in a ring, the voltage controlled oscillator providing plural phased shifted signals having the same frequency. The circuit further includes a feedback loop including plural data samplers adapted to receive the plural phase shifted signals provided by the voltage controlled oscillator and a phase detector coupled to coupled to a phase alignment circuit receiving output signals generated by the plural data samplers and generating control signals to the voltage controlled oscillator at a bit rate of the input signal.