Method for synchronizing independent clock signals

A method, comprising:

• generating a first clock signal and a second clock signal, wherein a frequency of the first clock signal is less than a frequency of the second clock signal;
• selecting the first clock signal as an output clock signal responsive to a first value of a selection input;
• and
• selecting a subset of clock pulses of the second clock signal as the output clock signal responsive to a second value of the selection input, wherein the subset of clock pulses of the second clock signal includes a given clock pulse of the second clock signal, wherein the given clock pulse is selected responsive to a detection of a given transition of the first clock signal.

A system, comprising:

• a plurality of functional units configured to perform operations responsive to transitions of respective received clock signals;
• a clock generation unit configured to output a first clock signal and a second clock signal, wherein a frequency of the first clock signal is less than a frequency of the second clock signal;
• a clock management unit configured to generate a clock select signal;
• a synchronizing unit, coupled to the clock generation unit, wherein the synchronizing unit is configured to:
• select the first clock signal as an output clock signal responsive to a first value of the clock select signal;
• and
• select a subset of clock pulses of the second clock signal as the output clock signal responsive to a second value of the clock select signal, wherein the subset of clock pulses of the second clock signal includes a given clock pulse of the second clock signal, wherein the given clock pulse is selected responsive to a detection of a given transition of the first clock signal.