JP5005976B2 - ロックの喪失後にフェーズ・ロックド・ループをリセットするための回路 - Google Patents
ロックの喪失後にフェーズ・ロックド・ループをリセットするための回路 Download PDFInfo
- Publication number
- JP5005976B2 JP5005976B2 JP2006198171A JP2006198171A JP5005976B2 JP 5005976 B2 JP5005976 B2 JP 5005976B2 JP 2006198171 A JP2006198171 A JP 2006198171A JP 2006198171 A JP2006198171 A JP 2006198171A JP 5005976 B2 JP5005976 B2 JP 5005976B2
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- Japan
- Prior art keywords
- reset
- signal
- circuit
- pll
- lock
- Prior art date
- Legal status (The legal status 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 status listed.)
- Expired - Fee Related
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- 238000007493 shaping process Methods 0.000 claims description 14
- 238000001514 detection method Methods 0.000 claims description 8
- 239000002245 particle Substances 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 7
- 229920000729 poly(L-lysine) polymer Polymers 0.000 description 7
- 230000000737 periodic effect Effects 0.000 description 4
- 230000001052 transient effect Effects 0.000 description 4
- 230000002411 adverse Effects 0.000 description 3
- 239000003990 capacitor Substances 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 230000006870 function Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000001934 delay Effects 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- -1 ASICs Polymers 0.000 description 1
- 238000003491 array Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007123 defense Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
Images
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
- H03L7/105—Resetting the controlled oscillator when its frequency is outside a predetermined limit
-
- 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
- H03L7/085—Details of the phase-locked loop concerning mainly the frequency- or phase-detection arrangement including the filtering or amplification of its output signal
- H03L7/095—Details of the phase-locked loop concerning mainly the frequency- or phase-detection arrangement including the filtering or amplification of its output signal using a lock detector
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S331/00—Oscillators
- Y10S331/02—Phase locked loop having lock indicating or detecting means
Landscapes
- Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
- Electronic Switches (AREA)
Description
Claims (2)
- リセット能力を有するフェーズ・ロックド・ループ(PLL)であって、
基準信号及びフィードバック信号を受け取るよう結合されるフェーズ・ロックド・ループと、
前記基準信号及びロック検出信号を受け取るよう結合されるリセット回路と、
を備え、
前記リセット回路は、前記ロック検出信号がロック状態の喪失を示すときにリセットタイマを始動させ、前記リセット回路は、前記ロック検出信号が所定の時間の間ロック状態の喪失を示すとき、リセットを指示するリセット信号を出力し、前記ロック検出信号が、予め設定された時間量の前にロック状態を示す場合、前記リセットタイマをリセットするものであり、
前記リセット回路は、
前記基準信号を受け取るよう結合される第1の入力と、前記ロック検出信号を受け取るよう結合される第2の入力と、出力とを有する論理回路と、
前記論理回路の前記出力と結合された入力と、前記リセット信号を出力する出力とを有する相互接続されたラッチと、
前記相互接続されたラッチのうちの1つのラッチのラッチ出力に結合されるパルス整形タップと、
前記のロック検出の入力と前記パルス整形タップとに結合され、前記相互接続されたラッチをリセットすることにより、前記リセット信号のパルス幅を決定するパルス整形回路と
を更に備える、
フェーズ・ロックド・ループ。 - 請求項1記載のフェーズ・ロックド・ループであって、前記相互接続されたラッチが、相互接続されたDフリップフロップである、フェーズ・ロックド・ループ。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/254,474 US7423492B2 (en) | 2005-10-20 | 2005-10-20 | Circuit to reset a phase locked loop after a loss of lock |
US11/254,474 | 2005-10-20 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2007116662A JP2007116662A (ja) | 2007-05-10 |
JP5005976B2 true JP5005976B2 (ja) | 2012-08-22 |
Family
ID=37625996
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2006198171A Expired - Fee Related JP5005976B2 (ja) | 2005-10-20 | 2006-07-20 | ロックの喪失後にフェーズ・ロックド・ループをリセットするための回路 |
Country Status (4)
Country | Link |
---|---|
US (1) | US7423492B2 (ja) |
EP (1) | EP1780893A1 (ja) |
JP (1) | JP5005976B2 (ja) |
TW (1) | TWI383593B (ja) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20070205835A1 (en) * | 2006-01-03 | 2007-09-06 | Eric Iozsef | Robust locking/tuning in a multi-rate, multi-range phase locked loop |
KR100817081B1 (ko) * | 2007-01-11 | 2008-03-26 | 삼성전자주식회사 | 동기 실패를 방지하는 장치 및 그에 따른 지연 동기 루프 |
EP2445138B1 (fr) * | 2010-10-22 | 2015-07-15 | The Swatch Group Research and Development Ltd. | Unité de traitement de données, et récepteur de signaux comprenant l'unité de traitement de données |
US8547146B1 (en) | 2012-04-04 | 2013-10-01 | Honeywell International Inc. | Overcurrent based power control and circuit reset |
KR102053352B1 (ko) | 2013-02-25 | 2019-12-09 | 삼성전자주식회사 | 고조파 락을 방지할 수 있는 위상 동기 루프 및 이를 포함하는 장치들 |
JP6554956B2 (ja) * | 2015-07-14 | 2019-08-07 | 富士通株式会社 | 位相検出回路および信号再生回路 |
CN111183587A (zh) | 2017-10-12 | 2020-05-19 | 辛纳普蒂克斯公司 | 锁相环采样器和复位器 |
TWI681635B (zh) * | 2018-11-21 | 2020-01-01 | 國立交通大學 | 無參考訊號源時脈資料回復系統及其頻率偵測器 |
Family Cites Families (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5793704A (en) | 1980-12-03 | 1982-06-10 | Alps Electric Co Ltd | Fm demodulation circuit |
JP2578693B2 (ja) * | 1991-02-27 | 1997-02-05 | 三洋電機株式会社 | インターフェイス回路 |
US5686864A (en) * | 1995-09-05 | 1997-11-11 | Motorola, Inc. | Method and apparatus for controlling a voltage controlled oscillator tuning range in a frequency synthesizer |
JP3263621B2 (ja) * | 1997-01-23 | 2002-03-04 | 三洋電機株式会社 | Pll回路 |
KR100382328B1 (ko) | 1997-01-23 | 2003-12-18 | 산요 덴키 가부시키가이샤 | Pll회로및위상록검출회로 |
JPH10303745A (ja) * | 1997-05-01 | 1998-11-13 | Fujitsu General Ltd | Pll回路 |
JPH10308666A (ja) * | 1997-05-02 | 1998-11-17 | Fujitsu General Ltd | Pll回路 |
US6256362B1 (en) | 1998-06-30 | 2001-07-03 | Texas Instruments Incorporated | Frequency acquisition circuit and method for a phase locked loop |
JP2000049598A (ja) * | 1998-07-27 | 2000-02-18 | Hitachi Ltd | Pll回路 |
JP3028955B1 (ja) * | 1999-01-08 | 2000-04-04 | 日本電気アイシーマイコンシステム株式会社 | Pllロック回路におけるロック検出方法及びその装置 |
US6683930B1 (en) | 1999-12-23 | 2004-01-27 | Cypress Semiconductor Corp. | Digital phase/frequency detector, and clock generator and data recovery PLL containing the same |
JP2001274679A (ja) * | 2000-03-24 | 2001-10-05 | Mitsubishi Electric Corp | Pll回路 |
FR2816075B1 (fr) * | 2000-10-30 | 2004-05-28 | St Microelectronics Sa | Generateur ameliore pour la production de signaux d'horloge |
US6441691B1 (en) | 2001-03-09 | 2002-08-27 | Ericsson Inc. | PLL cycle slip compensation |
ITVA20020006A1 (it) | 2002-01-25 | 2003-07-25 | St Microelectronics Srl | Metodo e circuito di rilevazione di aggancio per pll |
JP2004120515A (ja) * | 2002-09-27 | 2004-04-15 | Oki Electric Ind Co Ltd | フェーズロックループ回路 |
JP4023276B2 (ja) | 2002-09-30 | 2007-12-19 | 株式会社デンソー | 駆動回路 |
GB2400760B (en) | 2003-04-14 | 2005-12-21 | Wolfson Ltd | Improved phase/frequency detector and phase lock loop circuit |
DE10319899B4 (de) | 2003-04-29 | 2006-07-06 | Infineon Technologies Ag | Verfahren und Frequenzvergleichseinrichtung zum Erzeugen eines Kontrollsignals, das eine Frequenzabweichung anzeigt |
-
2005
- 2005-10-20 US US11/254,474 patent/US7423492B2/en active Active
-
2006
- 2006-07-19 EP EP06117511A patent/EP1780893A1/en not_active Ceased
- 2006-07-19 TW TW095126447A patent/TWI383593B/zh not_active IP Right Cessation
- 2006-07-20 JP JP2006198171A patent/JP5005976B2/ja not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
US20070090881A1 (en) | 2007-04-26 |
JP2007116662A (ja) | 2007-05-10 |
US7423492B2 (en) | 2008-09-09 |
EP1780893A1 (en) | 2007-05-02 |
TW200718025A (en) | 2007-05-01 |
TWI383593B (zh) | 2013-01-21 |
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