TW428309B - Frequency adjusting method and device for oscillator built in the integrated circuit - Google Patents
Frequency adjusting method and device for oscillator built in the integrated circuitInfo
- Publication number
- TW428309B TW428309B TW87101886A TW87101886A TW428309B TW 428309 B TW428309 B TW 428309B TW 87101886 A TW87101886 A TW 87101886A TW 87101886 A TW87101886 A TW 87101886A TW 428309 B TW428309 B TW 428309B
- Authority
- TW
- Taiwan
- Prior art keywords
- reference voltage
- frequency
- value
- output
- charge
- Prior art date
Links
Landscapes
- Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
- Inductance-Capacitance Distribution Constants And Capacitance-Resistance Oscillators (AREA)
Abstract
The present invention relates to a frequency adjusting method and device for oscillator built in the integrated circuit which comprises the initial signal, reset signal, timing reference pulse and the following circuits: a reference voltage generator with voltage stabilization, wherein a power can output a stable reference voltage through the reference voltage generator and the voltage is divided in 1/2 and 3/4 gains simultaneously for output; a fine tuner for receiving the reset signal and a stable reference voltage output from the reference voltage generator for adjusting as P gains to output; a charge/discharge oscillator for receiving the initial signal, the reference voltage, (1/2) reference voltage and (3/4) reference voltage from the fine tuner and the reference voltage generator, and outputting a square wave, wherein there is a resistor and capacitor in the charge/discharge oscillator to control the frequency of the square wave; a frequency counter for receiving the reset signal, timing reference pulse and the output square wave of the charge/discharge oscillator to count the frequency of the square waves for determining the value of the frequency and outputting the value, and outputting a program signal to the fine tuner; and a comparison table for comparing the inputted frequency value of the frequency counter with the configured value to obtain a relative value, denoted by fuse (0-n), to output to the fine tuner; the fine tuner determining a new P value according to the program signal and the corresponding burned fuse with relative fuse (0-n), and the charge/discharge oscillator can obtain a precise frequency based on the new P value.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
TW87101886A TW428309B (en) | 1998-02-12 | 1998-02-12 | Frequency adjusting method and device for oscillator built in the integrated circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
TW87101886A TW428309B (en) | 1998-02-12 | 1998-02-12 | Frequency adjusting method and device for oscillator built in the integrated circuit |
Publications (1)
Publication Number | Publication Date |
---|---|
TW428309B true TW428309B (en) | 2001-04-01 |
Family
ID=21629485
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
TW87101886A TW428309B (en) | 1998-02-12 | 1998-02-12 | Frequency adjusting method and device for oscillator built in the integrated circuit |
Country Status (1)
Country | Link |
---|---|
TW (1) | TW428309B (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7912120B2 (en) | 2004-11-05 | 2011-03-22 | Interdigital Technology Corporation | Method and apparatus for estimating and correcting baseband frequency error in a receiver |
US8265130B2 (en) | 2004-11-05 | 2012-09-11 | Interdigital Technology Corporation | Adaptive equalizer with a dual-mode active taps mask generator and a pilot reference signal amplitude control unit |
-
1998
- 1998-02-12 TW TW87101886A patent/TW428309B/en not_active IP Right Cessation
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7912120B2 (en) | 2004-11-05 | 2011-03-22 | Interdigital Technology Corporation | Method and apparatus for estimating and correcting baseband frequency error in a receiver |
US8111788B2 (en) | 2004-11-05 | 2012-02-07 | Interdigital Technology Corporation | Apparatus for estimating and correcting baseband frequency error in a receiver |
US8265130B2 (en) | 2004-11-05 | 2012-09-11 | Interdigital Technology Corporation | Adaptive equalizer with a dual-mode active taps mask generator and a pilot reference signal amplitude control unit |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
GD4A | Issue of patent certificate for granted invention patent | ||
MM4A | Annulment or lapse of patent due to non-payment of fees |