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Dual mode tuning digitally controlled crystal oscillator has tuning control unit controlling coarse mode tuning signal to output controlled coarse mode tuning signal to coarse mode tuning unit based on mode tuning signal
Dual mode tuning digitally controlled crystal oscillator has tuning control unit controlling coarse mode tuning signal to output controlled coarse mode tuning signal to coarse mode tuning unit based on mode tuning signal
The oscillator has an oscillation circuit generating an oscillation frequency. A fine mode tuning unit performs a fine mode tuning operation on the oscillation frequency by controlling an oscillation circuit based on a fine mode tuning signal. A tuning control unit controls a coarse mode tuning signal to output the controlled coarse mode tuning signal to the coarse mode tuning unit based on the mode tuning signal. An independent claim is also included for a method for operating a dual mode tuning digitally controlled crystal oscillator.
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