Method and system for synchronizing multiple subsystems using one voltage-controlled oscillator

A method for synchronizing multiple subsystems using one voltage-controlled oscillator, the method comprising:

• transmitting a phase and frequency aligned output signal of a voltage-controlled oscillator to a plurality of subsystems within a digital system;
• generating a first internal clock in a first subsystem of the plurality of subsystems;
• outputting a synchronization signal from the first subsystem to each of the other subsystems in the digital system, the synchronization signal having a marker that defines a known point in time of the first internal clock;
• receiving the synchronization signal at the other subsystems;
• sampling the synchronization signal using the output signal of the voltage controlled oscillator received from the first subsystem to determine a starting indicator that indicates the known point in time of the first internal clock;
• and
• starting a second internal clock that is synchronized with the first internal clock upon detection of the marker in the synchronization signal.