Patent ID: 7184511

Claim:
A clock and data recovery system comprises: a phase detector operably coupled to receive high data rate serial data and to recover even and odd data from the high data rate serial data based on a divided clock and to produce phase information and transition information based on the recovered even and odd data; a lock phase adjust charge pump operably coupled to receive the phase information and transition information and to produce a current signal responsive to the phase information and transition information, wherein the lock phase adjust charge pump includes: a phase charge pump driven by the phase information; a transition charge pump driven by the transition information, the transition charge pump further including a programmable transition current sink; a programmable DC bias current sink; and at least two programmable offset bias current sinks; a loop filter for converting the current signal to a control voltage signal; a voltage controlled oscillator for producing a clock signal to the phase detector based on the control voltage signal; a divider operably coupled to receive the clock signal and to produce the divided clock to the phase detector; and control logic operable coupled to adjust the programmable transition current sink, the programmable DC bias current sink, and the at least two programmable offset bias current sinks over a plurality of n-bit buses.