DE60220300D1 - Schaltung zur detektion eines taktsignalverlusts und verfahren dazu - Google Patents

Schaltung zur detektion eines taktsignalverlusts und verfahren dazu

Info

Publication number
DE60220300D1
DE60220300D1 DE60220300T DE60220300T DE60220300D1 DE 60220300 D1 DE60220300 D1 DE 60220300D1 DE 60220300 T DE60220300 T DE 60220300T DE 60220300 T DE60220300 T DE 60220300T DE 60220300 D1 DE60220300 D1 DE 60220300D1
Authority
DE
Germany
Prior art keywords
detecting
circuit
clock signal
method therefor
signal loss
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
Application number
DE60220300T
Other languages
English (en)
Other versions
DE60220300T2 (de
Inventor
Greg Starr
Edward Aung
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.)
Altera Corp
Original Assignee
Altera 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 Altera Corp filed Critical Altera Corp
Publication of DE60220300D1 publication Critical patent/DE60220300D1/de
Application granted granted Critical
Publication of DE60220300T2 publication Critical patent/DE60220300T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F11/00—Error detection; Error correction; Monitoring
    • G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
    • G06F11/16—Error detection or correction of the data by redundancy in hardware
    • G06F11/1604—Error detection or correction of the data by redundancy in hardware where the fault affects the clock signals of a processing unit and the redundancy is at or within the level of clock signal generation hardware
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/04—Generating or distributing clock signals or signals derived directly therefrom
    • G06F1/08—Clock generators with changeable or programmable clock frequency
    • 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
    • H03L7/14—Details of the phase-locked loop for assuring constant frequency when supply or correction voltages fail or are interrupted
    • H03L7/143—Details of the phase-locked loop for assuring constant frequency when supply or correction voltages fail or are interrupted by switching the reference signal of the phase-locked loop
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F11/00—Error detection; Error correction; Monitoring
    • G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
    • G06F11/16—Error detection or correction of the data by redundancy in hardware
    • G06F11/20—Error detection or correction of the data by redundancy in hardware using active fault-masking, e.g. by switching out faulty elements or by switching in spare elements
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L7/00—Arrangements for synchronising receiver with transmitter
    • H04L7/0008—Synchronisation information channels, e.g. clock distribution lines
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L7/00—Arrangements for synchronising receiver with transmitter
    • H04L7/0079—Receiver details
    • H04L7/0083—Receiver details taking measures against momentary loss of synchronisation, e.g. inhibiting the synchronisation, using idle words or using redundant clocks

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Quality & Reliability (AREA)
  • Manipulation Of Pulses (AREA)
  • Tests Of Electronic Circuits (AREA)
  • Dc-Dc Converters (AREA)
  • Electronic Switches (AREA)
  • Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)
DE60220300T 2001-08-03 2002-08-05 Schaltung zur detektion eines taktsignalverlusts und verfahren dazu Expired - Fee Related DE60220300T2 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US31013601P 2001-08-03 2001-08-03
US310136P 2001-08-03
PCT/US2002/024893 WO2003013000A2 (en) 2001-08-03 2002-08-05 Clock loss detection and switchover circuit

Publications (2)

Publication Number Publication Date
DE60220300D1 true DE60220300D1 (de) 2007-07-05
DE60220300T2 DE60220300T2 (de) 2008-01-17

Family

ID=23201141

Family Applications (1)

Application Number Title Priority Date Filing Date
DE60220300T Expired - Fee Related DE60220300T2 (de) 2001-08-03 2002-08-05 Schaltung zur detektion eines taktsignalverlusts und verfahren dazu

Country Status (7)

Country Link
US (3) US6891401B2 (de)
EP (1) EP1433059B1 (de)
JP (2) JP4009592B2 (de)
CN (2) CN101599034B (de)
AU (1) AU2002326532A1 (de)
DE (1) DE60220300T2 (de)
WO (1) WO2003013000A2 (de)

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KR101533092B1 (ko) * 2014-05-14 2015-07-02 대우전자부품(주) 차량용 전자식 스마트 변속 레버 장치
CN105703745B (zh) * 2014-11-24 2019-01-04 中国科学院沈阳自动化研究所 一种时钟状态指示电路及方法
JP2017033325A (ja) * 2015-08-03 2017-02-09 ルネサスエレクトロニクス株式会社 半導体装置
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CN109412581A (zh) * 2017-08-18 2019-03-01 杭州晶华微电子有限公司 一种时钟停振检测电路
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TWI714930B (zh) 2018-12-21 2021-01-01 瑞昱半導體股份有限公司 控制系統、控制方法及其非暫態電腦可讀取媒體
CN110350914B (zh) * 2019-06-18 2023-07-07 芯翼信息科技(上海)有限公司 一种片上系统
CN112214064B (zh) * 2019-07-11 2022-11-11 珠海格力电器股份有限公司 应用于芯片系统的时钟控制方法及装置
CN110795289B (zh) * 2019-10-29 2023-09-26 北京计算机技术及应用研究所 一种多时钟自动切换方法
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CN116015255A (zh) * 2022-12-30 2023-04-25 成都电科星拓科技有限公司 一种支持丢失自动切换的时钟无缝切换电路

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Also Published As

Publication number Publication date
JP4944664B2 (ja) 2012-06-06
CN101599034B (zh) 2016-03-02
JP2004537908A (ja) 2004-12-16
DE60220300T2 (de) 2008-01-17
US6891401B2 (en) 2005-05-10
EP1433059A2 (de) 2004-06-30
US7046048B2 (en) 2006-05-16
EP1433059B1 (de) 2007-05-23
US20060197558A1 (en) 2006-09-07
CN1571957A (zh) 2005-01-26
WO2003013000A3 (en) 2004-04-29
US20030034820A1 (en) 2003-02-20
WO2003013000A2 (en) 2003-02-13
CN100530127C (zh) 2009-08-19
US20050012525A1 (en) 2005-01-20
JP4009592B2 (ja) 2007-11-14
CN101599034A (zh) 2009-12-09
AU2002326532A1 (en) 2003-02-17
US7427881B2 (en) 2008-09-23
JP2007209032A (ja) 2007-08-16

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8339 Ceased/non-payment of the annual fee