Crystal oscillator emulator
AssigneeMarvell World Trade Ltd.
InventorSehat Sutardja
Life of this patent
Estimating the term…
Abstract
A crystal oscillator emulator integrated circuit, comprises a first temperature sensor that senses a first temperature of the integrated circuit; memory that stores calibration parameters and that selects at least one of the calibration parameters based on the first temperature; a semiconductor oscillator that generates an output signal having a frequency that is based on the calibration parameters; and an adaptive calibration circuit that adaptively adjusts a calibration approach for generating the calibration parameters based on a number of temperature test points input thereto.
Claims44
A crystal oscillator emulator integrated circuit, comprising:
- a first temperature sensor that senses a first temperature of said integrated circuit;
- memory that stores calibration parameters and that selects at least one of said calibration parameters based on said first temperature;
- a semiconductor oscillator that generates an output signal having a frequency that is based on said calibration parameters;
- and
- an adaptive calibration circuit that adaptively adjusts a calibration approach for generating said calibration parameters based on a number of temperature test points input thereto.
A crystal oscillator emulator integrated circuit, comprising:
- first temperature sensing means for sensing a first temperature of said integrated circuit;
- storing means for storing calibration parameters and for selecting at least one of said calibration parameters based on said first temperature;
- semiconductor oscillating means for generating an output signal having a frequency that is based on said calibration parameters;
- and
- adaptive calibration means for adaptively adjusting a calibration approach for generating said calibration parameters based on a number of temperature test points input thereto.
A method comprising:
- sensing a first temperature of an integrated circuit;
- storing calibration parameters;
- selecting at least one of said calibration parameters based on said first temperature;
- providing a semiconductor oscillator that generates an output signal having a frequency that is based on said calibration parameters;
- and
- adaptively adjusting a calibration approach for generating said calibration parameters based on a number of temperature test points input thereto.
An integrated circuit comprising:
- a crystal oscillator emulator that comprises:
- a first temperature sensor that senses a first temperature of said integrated circuit;
- memory that stores calibration parameters that are addressed based on said first temperature;
- and
- a semiconductor oscillator that generates an output signal having a frequency that is based on said calibration parameters,
- wherein said integrated circuit does not include other circuits unrelated to operation of said crystal oscillator emulator.
Dependencies are inferred from the claim text.