Multi-terminal harmonic oscillator integrated circuit with frequency calibration and frequency configuration
First Claim
1. An apparatus comprising:
- a reference harmonic oscillator to generate a first signal having a first frequency;
a first terminal to receive a supply voltage;
a second terminal to receive a ground potential; and
a third terminal to provide an output signal having an output frequency;
wherein one of the first, second or third terminals further is to receive input of a calibration of the first frequency and wherein one of the first, second or third terminals further is to receive input of a calibration mode signal having a frequency greater than a predetermined threshold to enter a calibration mode.
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Accused Products
Abstract
Exemplary embodiments of the invention provide a reference harmonic oscillator integrated circuit having three or more terminals, with systems and methods for calibrating the harmonic oscillator to a selected first frequency using a limited number of terminals. An exemplary apparatus comprises: a reference harmonic oscillator, a first terminal to receive a supply voltage, a second terminal to receive a ground potential, a third terminal to provide an output signal having an output frequency, and may also include a fourth terminal. One of the first, second, third or fourth terminals is further adapted for input of a calibration of the first frequency. The exemplary apparatus may enter calibration and testing modes in response to various commands such as a calibration mode signal, and may also be configured through one of the terminals for output frequency selection, spread-spectrum output, and output voltage levels.
27 Citations
85 Claims
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1. An apparatus comprising:
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a reference harmonic oscillator to generate a first signal having a first frequency; a first terminal to receive a supply voltage; a second terminal to receive a ground potential; and a third terminal to provide an output signal having an output frequency; wherein one of the first, second or third terminals further is to receive input of a calibration of the first frequency and wherein one of the first, second or third terminals further is to receive input of a calibration mode signal having a frequency greater than a predetermined threshold to enter a calibration mode. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28)
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29. An apparatus comprising:
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a unitary integrated circuit comprising a reference harmonic oscillator and at most four terminals; the reference harmonic oscillator to generate a first signal having a first frequency; a first terminal of the four terminals to receive a supply voltage; a second terminal of the four terminals to receive a ground potential; a third terminal of the four terminals to provide an output signal having an output frequency, to provide output of digital data and analog data, and to receive input of digital data and analog data, wherein the input digital data comprises a calibration input of the first frequency; and a fourth terminal of the four terminals to receive an enable signal, to receive a calibration mode signal, and to receive a digital clock input signal to synchronize digital data input for the third terminal. - View Dependent Claims (30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60)
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61. An apparatus comprising:
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a unitary integrated circuit comprising a reference harmonic oscillator and at most five terminals; the reference harmonic oscillator to generate a first signal having a first frequency; a first terminal of the five terminals to receive a supply voltage; a second terminal of the five terminals to receive a ground potential; a third terminal of the five terminals to provide an output signal having an output frequency, to receive input of digital data and to provide output of digital data, wherein the input digital data comprises a calibration input of the first frequency; a fourth terminal of the five terminals to receive input of analog data and to provide output of analog data; and a fifth terminal of the five terminals to receive an enable signal, to receive a calibration mode signal, and to receive a digital clock input signal to synchronize digital data input for the third terminal. - View Dependent Claims (62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74)
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75. A method of frequency calibration and testing of a unitary integrated circuit comprising a reference harmonic oscillator and at most four terminals, the method comprising:
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providing a supply voltage to a first terminal of the four terminals; providing a ground potential to a second terminal of the four terminals; providing an enable signal to a third terminal of the four terminals; providing a calibration mode signal to the third terminal for the unitary integrated circuit to enter a calibration mode; receiving an output signal having an output frequency from a fourth terminal of the four terminals; providing a digital clock input signal to the third terminal to synchronize digital data input to the fourth terminal; receiving digital output data and analog output data from the fourth terminal; providing digital input data and analog input data to the fourth terminal, wherein the digital input data comprises a calibration input or a configuration input of the output frequency. - View Dependent Claims (76, 77, 78, 79)
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80. A system for providing frequency calibration to a unitary integrated circuit comprising a reference oscillator and at most four terminals, the integrated circuit providing an output signal having an output frequency, the system comprising:
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a user interface; a reference signal generator; and a first output couplable to the integrated circuit for providing a supply voltage to a first terminal of the four terminals; a second output couplable to the integrated circuit for providing a ground potential to a second terminal of the four terminals; a first combined input and output couplable to the integrated circuit for receiving an output signal having an output frequency from a third terminal of the four terminals, for receiving digital output data and analog output data from the third terminal, and for providing digital input data and analog input data to the third terminal, wherein the digital input data comprises a calibration input or a configuration input of the output frequency; a second combined input and output couplable to the integrated circuit for providing an enable signal to a fourth terminal of the four terminals, for providing a calibration mode signal to the fourth terminal for the unitary integrated circuit to enter a calibration mode; and
for providing a digital clock input signal to the fourth terminal to synchronize digital data input to the third terminal; anda control circuit coupled to the user interface and to the reference signal generator, the control circuit to generate the calibration mode signal and the calibration input or the configuration input for frequency modification. - View Dependent Claims (81, 82, 83, 84, 85)
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Specification