GB2496673B - Clock generator - Google Patents

Clock generator

Info

Publication number
GB2496673B
GB2496673B GB1120016.9A GB201120016A GB2496673B GB 2496673 B GB2496673 B GB 2496673B GB 201120016 A GB201120016 A GB 201120016A GB 2496673 B GB2496673 B GB 2496673B
Authority
GB
United Kingdom
Prior art keywords
clock generator
clock
generator
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.)
Active
Application number
GB1120016.9A
Other versions
GB2496673A (en
GB201120016D0 (en
Inventor
John Paul Lesso
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Cirrus Logic International UK Ltd
Original Assignee
Wolfson Microelectronics PLC
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 Wolfson Microelectronics PLC filed Critical Wolfson Microelectronics PLC
Priority to GB1120016.9A priority Critical patent/GB2496673B/en
Publication of GB201120016D0 publication Critical patent/GB201120016D0/en
Priority to PCT/GB2012/052868 priority patent/WO2013076470A2/en
Priority to CN201710702456.6A priority patent/CN107359874B/en
Priority to CN201280067552.3A priority patent/CN104067520B/en
Priority to CN202011448492.2A priority patent/CN112564701A/en
Priority to KR1020197020114A priority patent/KR102122509B1/en
Priority to KR1020207016428A priority patent/KR102222865B1/en
Priority to KR1020147016887A priority patent/KR102000756B1/en
Publication of GB2496673A publication Critical patent/GB2496673A/en
Application granted granted Critical
Publication of GB2496673B publication Critical patent/GB2496673B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • H03L7/099—Details of the phase-locked loop concerning mainly the controlled oscillator of the loop
    • H03L7/0991—Details of the phase-locked loop concerning mainly the controlled oscillator of the loop the oscillator being a digital oscillator, e.g. composed of a fixed oscillator followed by a variable frequency divider
    • H03L7/0994—Details of the phase-locked loop concerning mainly the controlled oscillator of the loop the oscillator being a digital oscillator, e.g. composed of a fixed oscillator followed by a variable frequency divider comprising an accumulator
    • 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
    • H03L7/07—Automatic control of frequency or phase; Synchronisation using a reference signal applied to a frequency- or phase-locked loop using several loops, e.g. for redundant clock signal generation
    • 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
    • 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
    • H03L7/22—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop using more than one loop
    • H03L7/23—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop using more than one loop with pulse counters or frequency dividers
    • H03L7/235—Nested phase locked loops
GB1120016.9A 2011-11-21 2011-11-21 Clock generator Active GB2496673B (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
GB1120016.9A GB2496673B (en) 2011-11-21 2011-11-21 Clock generator
CN202011448492.2A CN112564701A (en) 2011-11-21 2012-11-20 Integrated circuit chip and device including the same
CN201710702456.6A CN107359874B (en) 2011-11-21 2012-11-20 Integrated circuit, device including integrated circuit, and integrated circuit chip
CN201280067552.3A CN104067520B (en) 2011-11-21 2012-11-20 Clock generator
PCT/GB2012/052868 WO2013076470A2 (en) 2011-11-21 2012-11-20 Clock generator
KR1020197020114A KR102122509B1 (en) 2011-11-21 2012-11-20 Clock generator
KR1020207016428A KR102222865B1 (en) 2011-11-21 2012-11-20 Clock generator
KR1020147016887A KR102000756B1 (en) 2011-11-21 2012-11-20 Clock generator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1120016.9A GB2496673B (en) 2011-11-21 2011-11-21 Clock generator

Publications (3)

Publication Number Publication Date
GB201120016D0 GB201120016D0 (en) 2012-01-04
GB2496673A GB2496673A (en) 2013-05-22
GB2496673B true GB2496673B (en) 2014-06-11

Family

ID=45475440

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1120016.9A Active GB2496673B (en) 2011-11-21 2011-11-21 Clock generator

Country Status (4)

Country Link
KR (3) KR102000756B1 (en)
CN (3) CN104067520B (en)
GB (1) GB2496673B (en)
WO (1) WO2013076470A2 (en)

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CN103843795A (en) * 2012-12-07 2014-06-11 陕西美邦农药有限公司 Fungicidal composition containing fenpyrazamine
GB2557050B (en) * 2013-10-23 2018-08-22 Cirrus Logic Int Semiconductor Ltd Class-D Amplifier circuits
US9674480B2 (en) * 2014-10-01 2017-06-06 Teac Corporation Camera link recorder
CN104702365A (en) * 2015-03-09 2015-06-10 烽火通信科技股份有限公司 Delta sigma principle-based clock adjustment system and method
CN104777378A (en) * 2015-03-09 2015-07-15 国核自仪系统工程有限公司 FPGA clock signal self-detecting method
WO2017154126A1 (en) * 2016-03-09 2017-09-14 三菱電機株式会社 Pulse shifting circuit and frequency synthesizer
WO2019032899A1 (en) * 2017-08-09 2019-02-14 Planar Systems, Inc. Clock synthesis circuitry and associated techniques for generating clock signals refreshing display screen content
CN113196184B (en) * 2018-10-22 2022-10-18 盈诺飞公司 Wide-measuring-range high-sensitivity time-to-digital converter
US10734977B1 (en) * 2019-04-10 2020-08-04 Silicon Laboratories Inc. Efficient voltage controlled oscillator (VCO) analog-to-digital converter (ADC)
CN110739970B (en) * 2019-11-01 2023-12-26 上海艾为电子技术股份有限公司 Analog-to-digital conversion circuit, portable device, and analog-to-digital conversion method
CN112150962B (en) * 2020-10-23 2024-04-05 维沃移动通信有限公司 Chip clock frequency adjusting method and device, chip and electronic equipment
KR102477864B1 (en) * 2020-12-11 2022-12-15 한국과학기술원 A frequency hopping spread spectrum frequency synthesizer
CN113093510B (en) * 2021-02-26 2022-07-22 山东师范大学 Clock frequency signal error measuring instrument and method
CN113193848B (en) * 2021-04-30 2022-09-30 广东电网有限责任公司电力科学研究院 Online measurement method for improving high-frequency noise power gain of novel basic controller
CN115223578B (en) * 2022-09-21 2023-07-14 浙江地芯引力科技有限公司 Audio signal synchronization method, device, equipment and storage medium

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080075152A1 (en) * 2006-09-25 2008-03-27 Melanson John L Hybrid analog/digital phase-lock loop with high-level event synchronization
US20090041104A1 (en) * 2006-06-27 2009-02-12 Bogdan John W Phase and Frequency Recovery Techniques
US7558358B1 (en) * 2004-10-13 2009-07-07 Cirrus Logic, Inc. Method and apparatus for generating a clock signal according to an ideal frequency ratio
US7680236B1 (en) * 2006-09-25 2010-03-16 Cirrus Logic, Inc. Hybrid analog/digital phase-lock loop for low-jitter synchronization
US20100134192A1 (en) * 2008-12-02 2010-06-03 Electronics And Telecommunications Research Institute Frequency calibration loop circuit
US7746972B1 (en) * 2007-03-22 2010-06-29 Cirrus Logic, Inc. Numerically-controlled phase-lock loop with input timing reference-dependent ratio adjustment
US20110087347A1 (en) * 2009-10-08 2011-04-14 Dialog Semiconductor Gmbh Digital controller for automatic rate detection and tracking of audio interface clocks

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SE445868B (en) * 1984-12-12 1986-07-21 Ellemtel Utvecklings Ab DEVICE FOR DIVIDING A CLOCK RATE
US5870592A (en) * 1996-10-31 1999-02-09 International Business Machines Corp. Clock generation apparatus and method for CMOS microprocessors using a differential saw oscillator
US5825253A (en) * 1997-07-15 1998-10-20 Qualcomm Incorporated Phase-locked-loop with noise shaper
US6385267B1 (en) * 1998-12-22 2002-05-07 Microsoft Corporation System and method for locking disparate video formats
GB2409383B (en) * 2003-12-17 2006-06-21 Wolfson Ltd Clock synchroniser
GB2413043B (en) * 2004-04-06 2006-11-15 Wolfson Ltd Clock synchroniser and clock and data recovery apparatus and method
CN100353671C (en) * 2004-05-26 2007-12-05 华为技术有限公司 Clock synthesizing method and system
US7474724B1 (en) * 2004-10-13 2009-01-06 Cirrus Logic, Inc. Method and system for video-synchronous audio clock generation from an asynchronously sampled video signal
US7512175B2 (en) * 2005-03-16 2009-03-31 Ibiquity Digital Corporation Method for synchronizing exporter and exciter clocks
US7873133B2 (en) * 2005-06-30 2011-01-18 Infinera Corporation Recovery of client clock without jitter
TWI311865B (en) * 2005-07-01 2009-07-01 Via Tech Inc Clock and data recovery circuit and method thereof
JP2007124044A (en) * 2005-10-25 2007-05-17 Nec Electronics Corp Reference clock reproduction circuit and data receiver
CN101385264B (en) * 2006-02-17 2012-11-07 标准微体系有限公司 Receiver circuit, transmitter circuit and communication network
US7567099B2 (en) * 2007-05-01 2009-07-28 Dialogic Corporation Filterless digital frequency locked loop
CN101557208B (en) * 2008-04-10 2011-09-28 智原科技股份有限公司 Adjusting circuit, integrated circuit applying the same and signal filtering method
CN101673351A (en) * 2008-09-11 2010-03-17 北京同方微电子有限公司 Pseudo-random number generating circuit and generating method of radio frequency identification tag chip
US8452429B2 (en) * 2009-01-21 2013-05-28 Cirrus Logic, Inc. Audio processor with internal oscillator-generated audio intermediate frequency reference
CN101520672B (en) * 2009-03-20 2011-02-09 东南大学 All-digital spread-spectrum clock generator for use in SATA

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7558358B1 (en) * 2004-10-13 2009-07-07 Cirrus Logic, Inc. Method and apparatus for generating a clock signal according to an ideal frequency ratio
US20090041104A1 (en) * 2006-06-27 2009-02-12 Bogdan John W Phase and Frequency Recovery Techniques
US20080075152A1 (en) * 2006-09-25 2008-03-27 Melanson John L Hybrid analog/digital phase-lock loop with high-level event synchronization
US7680236B1 (en) * 2006-09-25 2010-03-16 Cirrus Logic, Inc. Hybrid analog/digital phase-lock loop for low-jitter synchronization
US7746972B1 (en) * 2007-03-22 2010-06-29 Cirrus Logic, Inc. Numerically-controlled phase-lock loop with input timing reference-dependent ratio adjustment
US20100134192A1 (en) * 2008-12-02 2010-06-03 Electronics And Telecommunications Research Institute Frequency calibration loop circuit
US20110087347A1 (en) * 2009-10-08 2011-04-14 Dialog Semiconductor Gmbh Digital controller for automatic rate detection and tracking of audio interface clocks

Also Published As

Publication number Publication date
KR102000756B1 (en) 2019-07-16
KR20140103970A (en) 2014-08-27
KR102122509B1 (en) 2020-06-12
WO2013076470A2 (en) 2013-05-30
KR20190086778A (en) 2019-07-23
KR102222865B1 (en) 2021-03-03
CN112564701A (en) 2021-03-26
WO2013076470A3 (en) 2013-07-25
CN107359874B (en) 2021-01-01
KR20200069390A (en) 2020-06-16
CN104067520B (en) 2017-09-05
GB2496673A (en) 2013-05-22
CN107359874A (en) 2017-11-17
GB201120016D0 (en) 2012-01-04
CN104067520A (en) 2014-09-24

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732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)

Free format text: REGISTERED BETWEEN 20150820 AND 20150826