Crystal oscillator emulator
First Claim
Patent Images
1. A device for generating an output signal having a frequency, the device having a die temperature, comprising:
- a first temperature sensor to sense a first temperature;
a non-volatile memory to store calibration information for controlling the output signal frequency as a function of the first temperature;
a semiconductor oscillator to generate the output signal as a function of the calibration information; and
a select input to select the output signal frequency as a function of an external passive component.
9 Assignments
0 Petitions
Accused Products
Abstract
A device for generating an output signal having a frequency. The device having a die temperature and including a first temperature sensor to sense a first temperature. A non-volatile memory to store calibration information for controlling the output signal frequency as a function of the first temperature. A semiconductor oscillator to generate the output signal as a function of the calibration information.
-
Citations
66 Claims
-
1. A device for generating an output signal having a frequency, the device having a die temperature, comprising:
-
a first temperature sensor to sense a first temperature; a non-volatile memory to store calibration information for controlling the output signal frequency as a function of the first temperature; a semiconductor oscillator to generate the output signal as a function of the calibration information; and a select input to select the output signal frequency as a function of an external passive component. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
-
-
12. A device for generating an output signal having a frequency, the device having a die temperature, comprising:
-
a first temperature sensor to sense a first temperature; a non-volatile memory to store calibration information for controlling the output signal frequency as a function of the first temperature; a semiconductor oscillator to generate the output signal as a function of the calibration information; a second temperature sensor to sense an external temperature; a heater to control the die temperature; and a controller, in response to the first and second temperature sensors, to control the heater.
-
-
13. A device having an output frequency and a die temperature, comprising:
on a semiconductor die; a) a first temperature sensor to sense the die temperature and generate a temperature signal; b) a heater, in response to the temperature signal, to maintain the die temperature at a predetermined operating temperature; c) a non-volatile memory to store calibration information relating the predetermined operating temperature to the output frequency; and d) a semiconductor oscillator to generate the output frequency as a function of the calibration information; e) a select input to select the output frequency as a function of an external passive component. - View Dependent Claims (14, 15, 16, 17)
-
18. A method of generating an output signal having a frequency, comprising:
-
providing a semiconductor oscillator having a die temperature; sensing a first temperature associated with the semiconductor oscillator; determining a change in temperature from a calibration temperature to the first temperature; determining a frequency correction value based on the change in temperature; generating the output signal frequency as a function of the frequency correction value; sensing an external temperature; and adjusting the die temperature to a temperature level greater than the external temperature and for which calibration information is stored. - View Dependent Claims (19, 20, 21, 22, 23, 24, 25)
-
-
26. A device for generating an output signal having a frequency, the device having a die temperature, comprising:
-
first means for sensing a first temperature; means for storing calibration information for controlling the output signal frequency as a function of the first temperature; means for generating an oscillatory output signal as a function of the calibration information; and means for selecting to select the output signal frequency as a function of an external passive component. - View Dependent Claims (27, 28, 29, 30, 31, 32, 33, 34, 35, 36)
-
-
37. A device for generating an output signal having a frequency, the device having a die temperature, comprising:
-
a first temperature sensor to sense a first temperature; a non-volatile memory to store calibration information for controlling the output signal frequency as a function of the first temperature; a semiconductor oscillator to generate the output signal as a function of the calibration information; an active silicon oscillator to generate an output signal having a frequency; a summer to determine a frequency error between the output signal of the semiconductor oscillator and the output signal of the active silicon oscillator; and a controller to control the output signal of the active silicon oscillator as a function of the frequency error. - View Dependent Claims (38, 53, 54)
-
-
39. A device for generating an output signal having a frequency, the device having a die temperature, comprising:
-
a first temperature sensor to sense a first temperature; a non-volatile memory to store calibration information for controlling the output signal frequency as a function of the first temperature; a semiconductor oscillator to generate the output signal as a function of the calibration information; a charge pump oscillator to generate an output signal having a frequency; and the semiconductor oscillator in communication with the charge pump oscillator to calibrate the output signal of the charge pump oscillator. - View Dependent Claims (40, 41)
-
-
42. A method of generating an output signal having a frequency, comprising:
-
providing a semiconductor oscillator having a die temperature; sensing a first temperature associated with the semiconductor oscillator; determining a change in temperature from a calibration temperature to the first temperature; determining a frequency correction value based on the change in temperature; generating the output signal frequency as a function of the frequency correction value; generating a periodic signal having a frequency; calibrating the periodic signal with the output signal; and intermittently powering down the semiconductor oscillator. - View Dependent Claims (43, 44, 45, 46, 47, 55, 56)
-
-
48. A device for generating an output signal having a frequency, the device having a die temperature, comprising:
-
first means for sensing a first temperature; means for storing calibration information for controlling the output signal frequency as a function of the first temperature; means for generating an oscillatory output signal as a function of the calibration information; means for generating a periodic signal having a frequency; means for summing to determine a frequency error between the output signal and the periodic signal; and means for controlling to control the periodic signal as a function of the frequency error. - View Dependent Claims (49, 57, 58)
-
-
50. A device for generating an output signal having a frequency, the device having a die temperature, comprising:
-
first means for sensing a first temperature; means for storing calibration information for controlling the output signal frequency as a function of the first temperature; means for generating an oscillatory output signal as a function of the calibration information; and means for generating a periodic signal having a frequency, wherein the means for generating the oscillatory output signal in communication with the means for generating the periodic signal, to calibrate the output signal. - View Dependent Claims (51, 52)
-
-
59. A device for generating an output signal having a frequency, the device having a die temperature, comprising:
-
a first temperature sensor to sense a first temperature; a non-volatile memory to store calibration information for controlling the output signal frequency as a function of the first temperature; a semiconductor oscillator to generate the output signal as a function of the calibration information and independent from a crystal oscillator reference frequency; and a select input to select the output signal frequency as a function of an external passive component.
-
-
60. A device having an output frequency and a die temperature, comprising:
-
on a semiconductor die; a) a first temperature sensor to sense the die temperature and generate a temperature signal; b) a heater, in response to the temperature signal, to maintain the die temperature at a predetermined operating temperature; c) a non-volatile memory to store calibration information relating the predetermined operating temperature to the output frequency; d) a semiconductor oscillator to generate the output frequency as a function of the calibration information and independent from a crystal oscillator reference frequency; and e) a select input to select the output signal frequency as a function of an external passive component.
-
-
61. A method of generating an output signal having a frequency, comprising:
-
providing a semiconductor oscillator having a die temperature; sensing a first temperature associated with the semiconductor oscillator; determining a change in temperature from a calibration temperature to the first temperature; determining a frequency correction value based on the change in temperature; generating the output signal frequency as a function of the frequency correction value independently from a crystal oscillator reference frequency; and selecting the output signal frequency as a function of an external passive component.
-
-
62. A device for generating an output signal having a frequency, the device having a die temperature, comprising:
-
first means for sensing a first temperature; means for storing calibration information for controlling the output signal frequency as a function of the first temperature; semiconductor oscillating means for generating an oscillatory output signal as a function of the calibration information and independently from a crystal oscillator reference frequency; and selecting means for selecting the output signal frequency as a function of an external passive component.
-
-
63. A device for generating an output signal having a frequency, the device having a die temperature, comprising:
-
a first temperature sensor to sense a first temperature; a non-volatile memory to store calibration information for controlling the output signal frequency as a function of the first temperature; a semiconductor oscillator to generate the output signal as a function of the calibration information wherein the calibration information includes plural pre-stored correction values; and a select input to select the output signal frequency as a function of an external passive component.
-
-
64. A device having an output frequency and a die temperature, comprising:
on a semiconductor die; a) a first temperature sensor to sense the die temperature and generate a temperature signal; b) a heater, in response to the temperature signal, to maintain the die temperature at a predetermined operating temperature; c) a non-volatile memory to store calibration information relating the predetermined operating temperature to the output frequency; and d) a semiconductor oscillator to generate the output frequency as a function of the calibration information wherein the calibration information includes plural pre-stored correction values; and e) a select input to select the output signal frequency as a function of an external passive component.
-
65. A method of generating an output signal having a frequency, comprising:
-
providing a semiconductor oscillator having a die temperature; sensing a first temperature associated with the semiconductor oscillator; determining a change in temperature from a calibration temperature to the first temperature; determining a frequency correction value based on the change in temperature; generating the output signal frequency as a function of the frequency correction value wherein the calibration information includes plural pre-stored correction values; and selecting the output signal frequency as a function of an external Passive component.
-
-
66. A device for generating an output signal having a frequency, the device having a die temperature, comprising:
-
first means for sensing a first temperature; means for storing calibration information for controlling the output signal frequency as a function of the first temperature; semiconductor oscillating means for generating an oscillatory output signal as a function of the calibration information wherein the calibration information includes plural pre-stored correction values; and selecting means for selecting the output signal frequency as a function of an external passive component.
-
Specification