ATE348356T1 - Störungsfreie taktauswahlschaltung - Google Patents

Störungsfreie taktauswahlschaltung

Info

Publication number
ATE348356T1
ATE348356T1 AT02803594T AT02803594T ATE348356T1 AT E348356 T1 ATE348356 T1 AT E348356T1 AT 02803594 T AT02803594 T AT 02803594T AT 02803594 T AT02803594 T AT 02803594T AT E348356 T1 ATE348356 T1 AT E348356T1
Authority
AT
Austria
Prior art keywords
selection circuit
clock
output
error
clock selection
Prior art date
Application number
AT02803594T
Other languages
English (en)
Inventor
Frederic Boutaud
Original Assignee
Analog Devices Inc
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 Analog Devices Inc filed Critical Analog Devices Inc
Application granted granted Critical
Publication of ATE348356T1 publication Critical patent/ATE348356T1/de

Links

Classifications

    • 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
    • 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
    • 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
    • H03K5/125—Discriminating pulses
    • H03K5/1252—Suppression or limitation of noise or interference

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Electronic Switches (AREA)
  • Steering Control In Accordance With Driving Conditions (AREA)
  • Maintenance And Management Of Digital Transmission (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)
  • Detection And Prevention Of Errors In Transmission (AREA)
AT02803594T 2001-11-15 2002-10-09 Störungsfreie taktauswahlschaltung ATE348356T1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US10/002,921 US6600345B1 (en) 2001-11-15 2001-11-15 Glitch free clock select switch

Publications (1)

Publication Number Publication Date
ATE348356T1 true ATE348356T1 (de) 2007-01-15

Family

ID=21703196

Family Applications (1)

Application Number Title Priority Date Filing Date
AT02803594T ATE348356T1 (de) 2001-11-15 2002-10-09 Störungsfreie taktauswahlschaltung

Country Status (6)

Country Link
US (1) US6600345B1 (de)
EP (1) EP1451666B1 (de)
CN (1) CN100373288C (de)
AT (1) ATE348356T1 (de)
DE (1) DE60216811T2 (de)
WO (1) WO2003044996A2 (de)

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US7003683B2 (en) * 2002-01-31 2006-02-21 Stmicroelectronics. Inc. Glitchless clock selection circuit
US6784699B2 (en) * 2002-03-28 2004-08-31 Texas Instruments Incorporated Glitch free clock multiplexing circuit with asynchronous switch control and minimum switch over time
JP3542351B2 (ja) * 2002-11-18 2004-07-14 沖電気工業株式会社 クロック切り替え回路
US6865135B2 (en) 2003-03-12 2005-03-08 Micron Technology, Inc. Multi-frequency synchronizing clock signal generator
US6975145B1 (en) * 2003-06-02 2005-12-13 Xilinx, Inc. Glitchless dynamic multiplexer with synchronous and asynchronous controls
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JP2005191877A (ja) * 2003-12-25 2005-07-14 Fujitsu Ltd クロック切り替え回路
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JP3778292B2 (ja) * 2004-07-12 2006-05-24 セイコーエプソン株式会社 クロック切り替え回路
US7259605B2 (en) * 2004-10-20 2007-08-21 Stmicroelectronics Pvt. Ltd. Pseudo true single phase clock latch with feedback mechanism
DE602004010696T2 (de) * 2004-12-23 2008-12-04 Alcatel Lucent Ein redundantes synchrones Taktverteilungssystem
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US7368961B2 (en) * 2005-12-22 2008-05-06 Rambus Inc. Clock distribution network supporting low-power mode
TW200725213A (en) * 2005-12-30 2007-07-01 Univ Nat Chiao Tung Clock switching circuit
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US20080012605A1 (en) * 2006-07-12 2008-01-17 Eastman Kodak Company Glitch-free clock switcher
TWI376876B (en) * 2006-10-23 2012-11-11 Realtek Semiconductor Corp Fraction-n frequency divider and method thereof
TWI338456B (en) * 2006-10-23 2011-03-01 Realtek Semiconductor Corp Hybrid phase-locked loop
CN100511089C (zh) * 2007-04-20 2009-07-08 威盛电子股份有限公司 时钟切换电路及时钟信号切换的方法
US7629828B1 (en) * 2007-04-27 2009-12-08 Zilog, Inc. Glitch-free clock multiplexer that provides an output clock signal based on edge detection
US7471120B2 (en) * 2007-05-15 2008-12-30 Broadcom Corporation Clock switch for generation of multi-frequency clock signal
US9209792B1 (en) * 2007-08-15 2015-12-08 Nvidia Corporation Clock selection system and method
US8762759B2 (en) * 2008-04-10 2014-06-24 Nvidia Corporation Responding to interrupts while in a reduced power state
EP2139113A1 (de) * 2008-06-23 2009-12-30 Dialog Semiconductor GmbH Störungsfreie Taktaussetzungs- und Wiederaufnahmeschaltung
US20090315597A1 (en) * 2008-06-24 2009-12-24 Subba Reddy Kallam Clock Selection for a Communications Processor having a Sleep Mode
US8245063B2 (en) * 2008-06-24 2012-08-14 Redpine Signals, Inc. Clock selection for a communications processor having a sleep mode
US8510487B2 (en) 2010-02-11 2013-08-13 Silicon Image, Inc. Hybrid interface for serial and parallel communication
EP2447805B1 (de) * 2010-10-12 2015-07-01 Nokia Technologies Oy Vorrichtung und Verfahren zur Synchronisierung und Bereitstellung eines störfreien Takts
US8384435B2 (en) * 2011-01-05 2013-02-26 Texas Instruments Incorporated Clock switching circuit with priority multiplexer
US8760197B2 (en) * 2011-03-29 2014-06-24 Broadcom Corporation Robust glitch-free clock switch with an unate clock network
CN102868398B (zh) * 2011-07-05 2014-12-17 联发科技（新加坡）私人有限公司 时钟信号产生装置以及使用于时钟信号产生装置的方法
CN102355239B (zh) * 2011-07-28 2013-10-23 四川九洲电器集团有限责任公司 一种方位增量脉冲信号自适应装置及处理方法
KR101728559B1 (ko) * 2011-11-25 2017-04-20 엘에스산전 주식회사 Ｐｌｃ 고속카운터 모듈의 입력회로
CN103248445B (zh) * 2012-02-09 2018-01-05 中兴通讯股份有限公司 一种时钟同步方法和装置
US9207704B2 (en) * 2012-10-26 2015-12-08 Silicon Laboratories, Inc. Glitchless clock switching that handles stopped clocks
CN103138748B (zh) * 2013-01-29 2015-12-09 东南大学 基于线性反馈移位寄存器的n比特计数器及控制方法
CN103412615B (zh) * 2013-08-22 2018-02-09 中国航天科工集团第三研究院第八三五七研究所 一种用于uart接口芯片的无毛刺自适应时钟切换方法
US9225322B2 (en) 2013-12-17 2015-12-29 Micron Technology, Inc. Apparatuses and methods for providing clock signals
CN105490675A (zh) * 2014-09-16 2016-04-13 深圳市中兴微电子技术有限公司 时钟动态切换方法及装置
CN105991110A (zh) * 2015-03-03 2016-10-05 中兴通讯股份有限公司 时钟切换的方法及时钟切换装置
US9360883B1 (en) 2015-08-26 2016-06-07 Freescale Semiconductor, Inc. Clock multiplexer for generating glitch-free clock signal
US9490789B1 (en) 2016-04-27 2016-11-08 Freescale Semiconductor, Inc. Glitch-free clock switching circuit using Muller C-elements
US10547311B2 (en) * 2018-05-15 2020-01-28 Texas Instruments Incorporated Reducing glitches that occur when multiplexing of asynchronous clocks using flip-flops and logic gates
US10530370B1 (en) * 2018-11-21 2020-01-07 Marvell International Ltd. Glitch-free PLL Multiplexer
US11545987B1 (en) 2018-12-12 2023-01-03 Marvell Asia Pte, Ltd. Traversing a variable delay line in a deterministic number of clock cycles
US11402413B1 (en) 2018-12-12 2022-08-02 Marvell Asia Pte, Ltd. Droop detection and mitigation
US10784871B1 (en) 2018-12-31 2020-09-22 Marvell Asia Pte, Ltd. Clocking architecture for DVFS with low-frequency DLL locking
US11545981B1 (en) 2018-12-31 2023-01-03 Marvell Asia Pte, Ltd. DLL-based clocking architecture with programmable delay at phase detector inputs
CN110502066B (zh) * 2019-08-15 2021-03-02 Oppo广东移动通信有限公司 时钟切换装置、方法及电子设备
TWI756708B (zh) * 2020-06-04 2022-03-01 瑞昱半導體股份有限公司 時脈訊號多工器裝置與時脈切換方法
US11927612B1 (en) 2022-04-07 2024-03-12 Marvell Asia Pte Ltd Digital droop detector
TWI817581B (zh) * 2022-06-23 2023-10-01 新唐科技股份有限公司 時脈切換裝置

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Also Published As

Publication number Publication date
WO2003044996A3 (en) 2003-10-16
DE60216811T2 (de) 2007-10-04
CN1589425A (zh) 2005-03-02
DE60216811D1 (de) 2007-01-25
CN100373288C (zh) 2008-03-05
US6600345B1 (en) 2003-07-29
WO2003044996A2 (en) 2003-05-30
EP1451666B1 (de) 2006-12-13
EP1451666A2 (de) 2004-09-01

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