TW200701646A - Phase lock loop and operation method thereof - Google Patents

Phase lock loop and operation method thereof

Info

Publication number
TW200701646A
TW200701646A TW094120415A TW94120415A TW200701646A TW 200701646 A TW200701646 A TW 200701646A TW 094120415 A TW094120415 A TW 094120415A TW 94120415 A TW94120415 A TW 94120415A TW 200701646 A TW200701646 A TW 200701646A
Authority
TW
Taiwan
Prior art keywords
signal
generate
reference frequency
determined
divided reference
Prior art date
Application number
TW094120415A
Other languages
English (en)
Other versions
TWI296464B (en
Inventor
Chung-Cheng Wang
Chao-Shi Chuang
Yi-Chuan Liu
Original Assignee
Airoha Tech Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Airoha Tech Corp filed Critical Airoha Tech Corp
Priority to TW094120415A priority Critical patent/TWI296464B/zh
Priority to US11/455,730 priority patent/US7511579B2/en
Publication of TW200701646A publication Critical patent/TW200701646A/zh
Application granted granted Critical
Publication of TWI296464B publication Critical patent/TWI296464B/zh

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
    • H03L7/00—Automatic control of frequency or phase; Synchronisation
    • H03L7/06—Automatic control of frequency or phase; Synchronisation using a reference signal applied to a frequency- or phase-locked loop
    • H03L7/08—Details of the phase-locked loop
    • H03L7/10—Details of the phase-locked loop for assuring initial synchronisation or for broadening the capture range
    • H03L7/113—Details of the phase-locked loop for assuring initial synchronisation or for broadening the capture range using frequency discriminator
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
    • H03L7/00—Automatic control of frequency or phase; Synchronisation
    • H03L7/06—Automatic control of frequency or phase; Synchronisation using a reference signal applied to a frequency- or phase-locked loop
    • H03L7/16—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop
    • H03L7/18—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop using a frequency divider or counter in the loop
    • H03L7/197—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop using a frequency divider or counter in the loop a time difference being used for locking the loop, the counter counting between numbers which are variable in time or the frequency divider dividing by a factor variable in time, e.g. for obtaining fractional frequency division
    • H03L7/1972—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop using a frequency divider or counter in the loop a time difference being used for locking the loop, the counter counting between numbers which are variable in time or the frequency divider dividing by a factor variable in time, e.g. for obtaining fractional frequency division for reducing the locking time interval

Landscapes

  • Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
TW094120415A 2005-06-20 2005-06-20 Phase lock loop and operating method thereof TWI296464B (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
TW094120415A TWI296464B (en) 2005-06-20 2005-06-20 Phase lock loop and operating method thereof
US11/455,730 US7511579B2 (en) 2005-06-20 2006-06-20 Phase lock loop and operating method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
TW094120415A TWI296464B (en) 2005-06-20 2005-06-20 Phase lock loop and operating method thereof

Publications (2)

Publication Number Publication Date
TW200701646A true TW200701646A (en) 2007-01-01
TWI296464B TWI296464B (en) 2008-05-01

Family

ID=37588729

Family Applications (1)

Application Number Title Priority Date Filing Date
TW094120415A TWI296464B (en) 2005-06-20 2005-06-20 Phase lock loop and operating method thereof

Country Status (2)

Country Link
US (1) US7511579B2 (zh)
TW (1) TWI296464B (zh)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI372522B (en) * 2007-01-10 2012-09-11 Mstar Semiconductor Inc Clock generator and associated self-test and switching-control method
US8113271B2 (en) * 2007-03-26 2012-02-14 Baker Hughes Incorporated Cutting tool for cutting a downhole tubular
KR100915817B1 (ko) * 2007-10-09 2009-09-07 주식회사 하이닉스반도체 Ｄｌｌ 회로
US7928782B2 (en) * 2009-01-28 2011-04-19 Micron Technology, Inc. Digital locked loops and methods with configurable operating parameters
US8618840B1 (en) * 2012-07-11 2013-12-31 Fujitsu Limited Frequency synthesizer tuning
US9065459B1 (en) * 2013-03-14 2015-06-23 Integrated Device Technology, Inc. Clock generation circuits using jitter attenuation control circuits with dynamic range shifting
US8872556B1 (en) 2013-04-30 2014-10-28 Micrel, Inc. PLL frequency synthesizer with multi-curve VCO implementing closed loop curve searching using charge pump current modulation
US9030241B2 (en) 2013-04-30 2015-05-12 Micrel, Inc. PLL frequency synthesizer with multi-curve VCO implementing closed loop curve searching
US9225322B2 (en) 2013-12-17 2015-12-29 Micron Technology, Inc. Apparatuses and methods for providing clock signals
US9385769B2 (en) * 2014-12-05 2016-07-05 Xilinx, Inc. Phase-locked loop with an adjustable output divider
TWI619351B (zh) * 2016-05-06 2018-03-21 瑞鼎科技股份有限公司 頻率合成裝置及使用其之自動校正方法
US10158364B1 (en) * 2017-08-31 2018-12-18 Taiwan Semiconductor Manufacturing Co., Ltd. Realignment strength controller for solving loop conflict of realignment phase lock loop
US11070218B2 (en) * 2019-04-17 2021-07-20 Texas Instruments Incorporated Real time counter-based method for the determination and measurement of frequency lock time in phase-locked loops
US10873335B2 (en) * 2019-05-02 2020-12-22 Apple Inc. Divider control and reset for phase-locked loops

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4365349A (en) * 1980-02-01 1982-12-21 Nippon Gakki Seizo Kabushiki Kaisha Radio receiver having phase locked loop and automatic frequency control loop for stably maintaining local oscillator frequency of voltage-controlled local oscillator
IT1295950B1 (it) * 1997-11-06 1999-05-28 Cselt Centro Studi Lab Telecom Circuito ad aggancio di fase.
IT1303599B1 (it) * 1998-12-11 2000-11-14 Cselt Ct Studi E Lab T Circuito ad aggancio di fase.
JP3488180B2 (ja) * 2000-05-30 2004-01-19 松下電器産業株式会社 周波数シンセサイザ
US6545547B2 (en) * 2000-08-18 2003-04-08 Texas Instruments Incorporated Method for tuning a VCO using a phase lock loop
US6597249B2 (en) * 2001-09-04 2003-07-22 Prominenet Communications, Inc. Fast coarse tuning control for PLL frequency synthesizer
JP3674850B2 (ja) 2001-12-11 2005-07-27 ソニー株式会社 電圧制御発振器の自走周波数の自動調整機能を有する位相ロックループ回路
US6710664B2 (en) * 2002-04-22 2004-03-23 Rf Micro Devices, Inc. Coarse tuning for fractional-N synthesizers
US6903613B1 (en) * 2002-12-20 2005-06-07 Cypress Semiconductor Corporation Voltage controlled oscillator
US7047146B2 (en) * 2003-12-19 2006-05-16 Airoha Technology Corp Method for automatically calibrating the frequency range of a PLL and associated PLL capable of automatic calibration
EP1545008A1 (en) * 2003-12-19 2005-06-22 STMicroelectronics Limited PLL architecture

Also Published As

Publication number Publication date
TWI296464B (en) 2008-05-01
US7511579B2 (en) 2009-03-31
US20070001770A1 (en) 2007-01-04

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