JP7433006B2 - 周波数検知回路 - Google Patents
周波数検知回路 Download PDFInfo
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- JP7433006B2 JP7433006B2 JP2019169650A JP2019169650A JP7433006B2 JP 7433006 B2 JP7433006 B2 JP 7433006B2 JP 2019169650 A JP2019169650 A JP 2019169650A JP 2019169650 A JP2019169650 A JP 2019169650A JP 7433006 B2 JP7433006 B2 JP 7433006B2
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- 238000001514 detection method Methods 0.000 title claims description 27
- 230000001934 delay Effects 0.000 claims 2
- 238000000034 method Methods 0.000 description 17
- 238000011084 recovery Methods 0.000 description 12
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- 238000010586 diagram Methods 0.000 description 9
- 230000003111 delayed effect Effects 0.000 description 7
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- 230000008859 change Effects 0.000 description 2
- 238000004590 computer program Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
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- 238000012549 training Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
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- 238000004364 calculation method Methods 0.000 description 1
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- 230000002441 reversible effect Effects 0.000 description 1
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- 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
- H03L7/087—Details of the phase-locked loop concerning mainly the frequency- or phase-detection arrangement including the filtering or amplification of its output signal using at least two phase detectors or a frequency and phase detector in the loop
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L7/00—Arrangements for synchronising receiver with transmitter
- H04L7/02—Speed or phase control by the received code signals, the signals containing no special synchronisation information
- H04L7/033—Speed or phase control by the received code signals, the signals containing no special synchronisation information using the transitions of the received signal to control the phase of the synchronising-signal-generating means, e.g. using a phase-locked loop
- H04L7/0337—Selecting between two or more discretely delayed clocks or selecting between two or more discretely delayed received code signals
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- 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
- H03L7/089—Details of the phase-locked loop concerning mainly the frequency- or phase-detection arrangement including the filtering or amplification of its output signal the phase or frequency detector generating up-down pulses
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- 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
- H03L7/091—Details of the phase-locked loop concerning mainly the frequency- or phase-detection arrangement including the filtering or amplification of its output signal the phase or frequency detector using a sampling device
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- 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
- H03L7/0805—Details of the phase-locked loop the loop being adapted to provide an additional control signal for use outside the loop
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- 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
- H03L7/0807—Details of the phase-locked loop concerning mainly a recovery circuit for the reference signal
-
- 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
- H03L7/081—Details of the phase-locked loop provided with an additional controlled phase shifter
- H03L7/0812—Details of the phase-locked loop provided with an additional controlled phase shifter and where no voltage or current controlled oscillator is used
- H03L7/0814—Details of the phase-locked loop provided with an additional controlled phase shifter and where no voltage or current controlled oscillator is used the phase shifting device being digitally controlled
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- 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
- H03L7/093—Details of the phase-locked loop concerning mainly the frequency- or phase-detection arrangement including the filtering or amplification of its output signal using special filtering or amplification characteristics in the loop
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- 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
- H03L7/104—Details of the phase-locked loop for assuring initial synchronisation or for broadening the capture range using an additional signal from outside the loop for setting or controlling a parameter in the loop
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- 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
- H03L7/107—Details of the phase-locked loop for assuring initial synchronisation or for broadening the capture range using a variable transfer function for the loop, e.g. low pass filter having a variable bandwidth
- H03L7/1075—Details of the phase-locked loop for assuring initial synchronisation or for broadening the capture range using a variable transfer function for the loop, e.g. low pass filter having a variable bandwidth by changing characteristics of the loop filter, e.g. changing the gain, changing the bandwidth
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- 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
- H03L7/107—Details of the phase-locked loop for assuring initial synchronisation or for broadening the capture range using a variable transfer function for the loop, e.g. low pass filter having a variable bandwidth
- H03L7/1077—Details of the phase-locked loop for assuring initial synchronisation or for broadening the capture range using a variable transfer function for the loop, e.g. low pass filter having a variable bandwidth by changing characteristics of the phase or frequency detection means
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- 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
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L7/00—Arrangements for synchronising receiver with transmitter
- H04L7/02—Speed or phase control by the received code signals, the signals containing no special synchronisation information
- H04L7/033—Speed or phase control by the received code signals, the signals containing no special synchronisation information using the transitions of the received signal to control the phase of the synchronising-signal-generating means, e.g. using a phase-locked loop
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L7/00—Arrangements for synchronising receiver with transmitter
- H04L7/04—Speed or phase control by synchronisation signals
- H04L7/041—Speed or phase control by synchronisation signals using special codes as synchronising signal
- H04L7/046—Speed or phase control by synchronisation signals using special codes as synchronising signal using a dotting sequence
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L7/00—Arrangements for synchronising receiver with transmitter
- H04L7/04—Speed or phase control by synchronisation signals
- H04L7/10—Arrangements for initial synchronisation
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Manipulation Of Pulses (AREA)
- Synchronisation In Digital Transmission Systems (AREA)
- Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
Description
120、820:バンバン位相検知器
130、860:電圧制御発振器
140:チャージポンプ
150:周波数取得回路
200、310:切替検知器
210:d-フリップフロップ
220、632、634、636、638、932、934、936、938、948、950:排他的論理和(XOR)
230:リタイマ
300、600、830:周波数検知器
320、330:遅延回路
340、400、630、930:組合せ論理回路
410:ダウン論理回路
420:アップ論理回路
610、612、614、616:データスライサ
620、622、920、922:データ整列回路
640、642、644、646、940、942、944、946:AND
800:クロックおよびデータ復旧回路
835:位相/周波数選択回路
840:減速器
850:積分器
855:比例制御経路
900:バンバン位相検知器と周波数検知器との組合せ
Claims (5)
- データ入力を受信し、前記データ入力の切替に基づいて第1境界出力(edge output)を提供する切替検知器と、
前記第1境界出力を受信し、受信した前記第1境界出力を遅延させる第1遅延回路を含み、第2境界出力を生成する第1回路と、
前記第2境界出力を受信し、受信した前記第2境界出力を遅延させる第2遅延回路を含み、第3境界出力を生成する第2回路と、
組合せ論理回路とを含み、
前記組合せ論理回路は、
前記第1境界出力、前記第2境界出力および前記第3境界出力のうち、2つ以上の境界出力が高い値のとき、アップ出力(UP output)を出力し、
前記第1境界出力、前記第2境界出力および前記第3境界出力がすべて低い値のとき、ダウン出力(DOWN output)を生成する周波数検知回路。 - 前記組合せ論理回路は、
ダウン論理回路(DOWN logic circuit)と、
アップ論理回路(UP logic circuit)とを含む、請求項1に記載の周波数検知回路。 - 前記ダウン論理回路は、
第1入力、第2入力および第3入力を有するANDゲートと、
前記第1境界出力を受信し、前記第1入力と接続されている第1反転器と、
前記第2境界出力を受信し、前記第2入力と接続されている第2反転器と、
前記第3境界出力を受信し、前記第3入力と接続されている第3反転器とを含む、請求項2に記載の周波数検知回路。 - 前記アップ論理回路は、
第1入力、第2入力および第3入力を有するORゲートと、
前記第1境界出力および前記第2境界出力を受信し、前記ORゲートの第1入力に第1出力を供給する第1ANDゲートと、
前記第1境界出力および前記第3境界出力を受信し、前記ORゲートの第2入力に第2出力を供給する第2ANDゲートと、
前記第2境界出力および前記第3境界出力を受信し、前記ORゲートの第3入力に第3出力を供給する第3ANDゲートとを含む、請求項2に記載の周波数検知回路。 - 前記組合せ論理回路は、選択信号によって、位相検知モードと周波数検知モードとを切替える選択回路をさらに含む、請求項1に記載の周波数検知回路。
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US201862732942P | 2018-09-18 | 2018-09-18 | |
US62/732,942 | 2018-09-18 | ||
US16/197,252 US10630461B2 (en) | 2018-09-18 | 2018-11-20 | Efficient frequency detectors for clock and data recovery circuits |
US16/197,252 | 2018-11-20 |
Publications (2)
Publication Number | Publication Date |
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JP2020048196A JP2020048196A (ja) | 2020-03-26 |
JP7433006B2 true JP7433006B2 (ja) | 2024-02-19 |
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JP2019169650A Active JP7433006B2 (ja) | 2018-09-18 | 2019-09-18 | 周波数検知回路 |
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US (4) | US10630461B2 (ja) |
EP (1) | EP3627706B1 (ja) |
JP (1) | JP7433006B2 (ja) |
KR (1) | KR20200033165A (ja) |
CN (1) | CN110912554B (ja) |
Families Citing this family (5)
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US10749664B1 (en) * | 2019-03-13 | 2020-08-18 | Ambarella International Lp | Clock data recovery for automotive vision system |
JP2021150843A (ja) * | 2020-03-19 | 2021-09-27 | キオクシア株式会社 | 半導体集積回路、受信装置、及び受信装置の制御方法 |
US11245554B1 (en) * | 2020-06-17 | 2022-02-08 | Xilinx, Inc. | Frequency detector for clock data recovery |
KR20230073804A (ko) | 2021-11-19 | 2023-05-26 | 현대엠시스템즈 주식회사 | 스테레오 카메라와 초음파 센서를 이용한 무인 지게차 주행 제어 장치 및 주행 방법 |
US11870880B2 (en) * | 2022-01-31 | 2024-01-09 | Samsung Display Co., Ltd. | Clock data recovery (CDR) with multiple proportional path controls |
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JP2001358582A (ja) | 2000-06-09 | 2001-12-26 | Nec Corp | クロック再生装置 |
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JP2016021629A (ja) | 2014-07-14 | 2016-02-04 | シナプティクス・ディスプレイ・デバイス合同会社 | Cdr回路及び半導体装置 |
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- 2019-08-16 KR KR1020190100417A patent/KR20200033165A/ko active Search and Examination
- 2019-08-29 EP EP19194481.8A patent/EP3627706B1/en active Active
- 2019-09-18 CN CN201910882471.2A patent/CN110912554B/zh active Active
- 2019-09-18 JP JP2019169650A patent/JP7433006B2/ja active Active
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- 2020-03-12 US US16/817,372 patent/US10862667B2/en active Active
- 2020-12-01 US US17/108,970 patent/US11206124B2/en active Active
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- 2021-12-16 US US17/553,546 patent/US11711199B2/en active Active
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2001358582A (ja) | 2000-06-09 | 2001-12-26 | Nec Corp | クロック再生装置 |
US20040141567A1 (en) | 2003-01-22 | 2004-07-22 | Fuji Yang | Multi-level pulse amplitude modulation receiver |
JP2013545403A (ja) | 2010-11-03 | 2013-12-19 | クアルコム,インコーポレイテッド | デジタル周波数検出を使用して入力信号からクロックおよびデータを再生するための方法およびデジタル回路 |
JP2016021629A (ja) | 2014-07-14 | 2016-02-04 | シナプティクス・ディスプレイ・デバイス合同会社 | Cdr回路及び半導体装置 |
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US20210083839A1 (en) | 2021-03-18 |
US20200092077A1 (en) | 2020-03-19 |
KR20200033165A (ko) | 2020-03-27 |
US10630461B2 (en) | 2020-04-21 |
TW202040944A (zh) | 2020-11-01 |
EP3627706B1 (en) | 2022-04-20 |
US20220109555A1 (en) | 2022-04-07 |
JP2020048196A (ja) | 2020-03-26 |
US10862667B2 (en) | 2020-12-08 |
EP3627706A2 (en) | 2020-03-25 |
CN110912554B (zh) | 2024-05-10 |
US20200213078A1 (en) | 2020-07-02 |
US11711199B2 (en) | 2023-07-25 |
US11206124B2 (en) | 2021-12-21 |
EP3627706A3 (en) | 2020-07-15 |
CN110912554A (zh) | 2020-03-24 |
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