DE60101117T2 - Anordnung und Verfahren zur Aufrechterhaltung des eingeschwungenen Zustandes eines Phasenregelkreises während eines Taktstopps - Google Patents

Anordnung und Verfahren zur Aufrechterhaltung des eingeschwungenen Zustandes eines Phasenregelkreises während eines Taktstopps Download PDF

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Publication number
DE60101117T2
DE60101117T2 DE60101117T DE60101117T DE60101117T2 DE 60101117 T2 DE60101117 T2 DE 60101117T2 DE 60101117 T DE60101117 T DE 60101117T DE 60101117 T DE60101117 T DE 60101117T DE 60101117 T2 DE60101117 T2 DE 60101117T2
Authority
DE
Germany
Prior art keywords
clock
phase locked
locked loop
clock tree
real
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 - Lifetime
Application number
DE60101117T
Other languages
German (de)
English (en)
Other versions
DE60101117D1 (de
Inventor
Edward R. Helder
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.)
Hewlett Packard Development Co LP
Original Assignee
Hewlett Packard Co
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 Hewlett Packard Co filed Critical Hewlett Packard Co
Publication of DE60101117D1 publication Critical patent/DE60101117D1/de
Application granted granted Critical
Publication of DE60101117T2 publication Critical patent/DE60101117T2/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; 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
    • G06F1/10—Distribution of clock signals, e.g. skew
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/28—Testing of electronic circuits, e.g. by signal tracer
    • G01R31/317—Testing of digital circuits
    • G01R31/3181—Functional testing
    • G01R31/3185—Reconfiguring for testing, e.g. LSSD, partitioning
    • G01R31/318533—Reconfiguring for testing, e.g. LSSD, partitioning using scanning techniques, e.g. LSSD, Boundary Scan, JTAG
    • G01R31/318552—Clock circuits details
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K5/00—Manipulating of pulses not covered by one of the other main groups of this subclass
    • H03K5/15—Arrangements in which pulses are delivered at different times at several outputs, i.e. pulse distributors
    • H03K5/15013—Arrangements in which pulses are delivered at different times at several outputs, i.e. pulse distributors with more than two outputs
    • H03K5/1506—Arrangements in which pulses are delivered at different times at several outputs, i.e. pulse distributors with more than two outputs with parallel driven output stages; with synchronously driven series connected output stages
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Nonlinear Science (AREA)
  • Tests Of Electronic Circuits (AREA)
  • Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
DE60101117T 2000-05-01 2001-04-30 Anordnung und Verfahren zur Aufrechterhaltung des eingeschwungenen Zustandes eines Phasenregelkreises während eines Taktstopps Expired - Lifetime DE60101117T2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US09/562,043 US6625559B1 (en) 2000-05-01 2000-05-01 System and method for maintaining lock of a phase locked loop feedback during clock halt
US562043 2000-05-01

Publications (2)

Publication Number Publication Date
DE60101117D1 DE60101117D1 (de) 2003-12-11
DE60101117T2 true DE60101117T2 (de) 2004-08-26

Family

ID=24244548

Family Applications (1)

Application Number Title Priority Date Filing Date
DE60101117T Expired - Lifetime DE60101117T2 (de) 2000-05-01 2001-04-30 Anordnung und Verfahren zur Aufrechterhaltung des eingeschwungenen Zustandes eines Phasenregelkreises während eines Taktstopps

Country Status (4)

Country Link
US (1) US6625559B1 (enExample)
EP (1) EP1152536B1 (enExample)
JP (1) JP4430836B2 (enExample)
DE (1) DE60101117T2 (enExample)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6920572B2 (en) * 2000-11-15 2005-07-19 Texas Instruments Incorporated Unanimous voting for disabling of shared component clocking in a multicore DSP device
US6751743B1 (en) * 2000-12-22 2004-06-15 Cisco Technology, Inc. Method and apparatus for selecting a first clock and second clock for first and second devices respectively from an up-converted clock and an aligned clock for synchronization
US6810486B2 (en) * 2001-03-28 2004-10-26 Intel Corporation Method and apparatus for de-skewing a clock using a first and second phase locked loop and a clock tree
US6934898B1 (en) * 2001-11-30 2005-08-23 Koninklijke Philips Electronics N.V. Test circuit topology reconfiguration and utilization techniques
US6647081B2 (en) * 2001-12-12 2003-11-11 Emulex Corporation Phase-locked loop (PLL) circuit for selectively correcting clock skew in different modes
JP2007193751A (ja) * 2006-01-23 2007-08-02 Nec Electronics Corp 半導体装置およびデータ入出力システム
KR100791002B1 (ko) 2006-11-15 2008-01-03 삼성전자주식회사 락킹 범위를 극대화시키며 번-인 테스트할 수 있는 위상동기 회로 및 그 번-인 테스트 방법
US7856562B2 (en) * 2007-05-02 2010-12-21 Advanced Micro Devices, Inc. Selective deactivation of processor cores in multiple processor core systems
US20080313478A1 (en) * 2007-06-15 2008-12-18 Wong Kar Leong Mechanism to gate clock trunk and shut down clock source
KR101374465B1 (ko) * 2010-07-07 2014-03-18 가부시키가이샤 어드밴티스트 시험 장치 및 시험 방법
US8994458B2 (en) * 2011-11-08 2015-03-31 Qualcomm Incorporated Oscillator based frequency locked loop
US20180311139A1 (en) 2017-04-28 2018-11-01 L'oreal Hair-treatment compositions comprising a polyurethane latex polymer and cationic compound
CN116521613B (zh) * 2023-07-04 2023-08-25 南京启见半导体科技有限公司 超低延迟的时钟域切换数据传输系统

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4876446A (en) 1987-02-06 1989-10-24 Matsushita Electric Works, Ltd. Optical sensor with optical interconnection board
US5349587A (en) * 1992-03-26 1994-09-20 Northern Telecom Limited Multiple clock rate test apparatus for testing digital systems
US5517147A (en) 1994-11-17 1996-05-14 Unisys Corporation Multiple-phase clock signal generator for integrated circuits, comprising PLL, counter, and logic circuits
US5864564A (en) 1995-11-17 1999-01-26 Sun Microsystems, Inc. Control circuit for deterministic stopping of an integrated circuit internal clock
US5900757A (en) 1996-05-01 1999-05-04 Sun Microsystems, Inc. Clock stopping schemes for data buffer
CA2226061C (en) * 1997-12-31 2002-05-28 Logicvision, Inc. Method and apparatus for controlling power level during bist

Also Published As

Publication number Publication date
US6625559B1 (en) 2003-09-23
DE60101117D1 (de) 2003-12-11
JP4430836B2 (ja) 2010-03-10
JP2002032144A (ja) 2002-01-31
EP1152536B1 (en) 2003-11-05
EP1152536A1 (en) 2001-11-07

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8327 Change in the person/name/address of the patent owner

Owner name: HEWLETT-PACKARD DEVELOPMENT CO., L.P., HOUSTON, TE