System and method for synchronizing multiple phase-lock loops or other synchronizable oscillators without using a master clock signal
AssigneeFairchild Semiconductor Corporation
InventorRonald J. Lenk
Life of this patent
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Abstract
A method for synchronizing a plurality of synchronizable oscillators is disclosed. The method includes monitoring a respective output signal of each synchronizable oscillator, each output signal having a respective frequency, generating a synchronization signal based on the output signal having the highest frequency of all of the output signals, and providing the synchronization signal to all of the synchronizable oscillators.
Claims22
A method for synchronizing a plurality of synchronizable oscillators, the method comprising:
- monitoring a respective output signal of each synchronizable oscillator, each output signal having a respective frequency;
- generating a synchronization signal based on the output signal having the highest frequency of all of the output signals;
- and
- providing the synchronization signal to all of the synchronizable oscillators.
A method for synchronizing a first synchronizable oscillator and a second synchronizable oscillator, the method comprising generating a first synchronization signal at a first synchronization circuit if the first synchronizable oscillator generates a first output signal before the second synchronizable oscillator generates a second output signal.
A system for synchronizing a first synchronizable oscillator and a second synchronizable oscillator, the system comprising:
- a first synchronization circuit coupled to the first synchronizable oscillator;
- and
- a second synchronization circuit coupled to the second synchronizable oscillator;
- wherein the first synchronization circuit is operable to generate a first synchronization signal if the first synchronizable oscillator generates a first output signal before the second synchronizable oscillator generates a second output signal.
A system comprising:
- a plurality of synchronizable oscillators, each synchronizable oscillator operating at a respective frequency;
- and
- synchronization means for synchronizing the plurality of synchronizable oscillators, the synchronization means operable to cause the plurality of synchronizable oscillator to operate at a frequency corresponding to the frequency of the synchronizable oscillator that is operating at the highest frequency.
A system comprising:
- a plurality of synchronizable oscillators, each synchronizable oscillator operable to generate a respective output signal, each output signal having a respective frequency;
- and
- a plurality of synchronization circuits, each synchronization circuit connected to a respective synchronizable oscillator and operable to generate a synchronization signal.
Dependencies are inferred from the claim text.