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AssigneeTaiwan Semiconductor Manufacturing Company, Ltd.
InventorsChao Chieh Li, Min-Shueh Yuan, Robert Bogdan Staszewski, Chia-Chun Liao
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Systems and methods are provided for hopping a digitally controlled oscillator (DCO) among a plurality of channels, wherein a gain of the DCO KDCO is a nonlinear function of frequency. A first normalized tuning word (NTW) corresponding to a first channel of the plurality of channels is generated. A first normalizing gain multiplier X is generated based on the nonlinear function of frequency, on an estimate of the nonlinear function of frequency, at a first frequency corresponding to the first channel. The first NTW is multiplied by the first X to obtain a first oscillator tuning word (OTW). The first OTW is input to the DCO to cause the DCO to hop to the first channel. A system for hopping among a plurality of channels at a plurality of respective frequencies comprises a phase-locked loop (PLL), a digitally controlled oscillator (DCO), a multiplexer, and an arithmetic module.
A method for controlling a digitally controlled oscillator (DCO), the method comprising:
A system for controlling a digitally controlled oscillator (DCO), the system comprising:
A system configured to be coupled to a digitally controlled oscillator (DCO), the system comprising:
Dependencies are inferred from the claim text.