Crystal oscillator emulator
First Claim
Patent Images
1. 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.
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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.
102 Citations
44 Claims
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1. A crystal oscillator emulator integrated circuit, comprising:
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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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 42)
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11. A crystal oscillator emulator integrated circuit, comprising:
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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. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20, 43)
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21. A method comprising:
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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. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28, 29, 30, 44)
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31. An integrated circuit comprising:
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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. - View Dependent Claims (32, 33, 34, 35, 36, 37, 38, 39, 40, 41)
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Specification