LC tank clock driver with automatic tuning

A method for automatically tuning a resonant LC clock driver, said LC clock driver used in parallel with a programmable capacitance, said LC clock driver comprising a capacitance due to latches and interconnects and an inductor as said resonant LC clock driver's load in parallel with said capacitance, said inductor resonating out said capacitance due to latches and interconnects, said method comprising the steps of:

• a. setting an initial value of said programmable capacitance via a finite state machine;
• b. tuning said resonant LC clock driver via adjusting a center frequency of said clock driver to match the frequency of the clock associated with said LC clock driver, said adjusting performed via interacting with said state machine and changing said programmable capacitance's value, and
• wherein said tuning is based upon finding the capacitance which leads to the lowest power consumption.

A method for automatically tuning a resonant LC clock driver, said LC clock driver used in parallel with a programmable capacitance, said LC clock driver comprising a capacitance due to latches and interconnects, a resistor, and an inductor and said resistor as said resonant LC clock driver's load in parallel with said capacitance, said inductor and said resistor resonating out said capacitance due to latches and interconnects, said method comprising the steps of:

• a. setting an initial value of said programmable capacitance via a finite state machine;
• b. tuning said resonant LC clock driver via adjusting a center frequency of said clock driver to match the frequency of the clock associated with said LC clock driver, said adjusting performed via interacting with said state machine and changing said programmable capacitance's value, and
• wherein said tuning is based upon finding the capacitance which leads to the lowest power consumption.