WO2006101523A3 - Low-latency start-up for a monolithic clock generator and timing/frequency reference - Google Patents

Low-latency start-up for a monolithic clock generator and timing/frequency reference Download PDF

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Publication number
WO2006101523A3
WO2006101523A3 PCT/US2005/034016 US2005034016W WO2006101523A3 WO 2006101523 A3 WO2006101523 A3 WO 2006101523A3 US 2005034016 W US2005034016 W US 2005034016W WO 2006101523 A3 WO2006101523 A3 WO 2006101523A3
Authority
WO
WIPO (PCT)
Prior art keywords
current
low
timing
clock generator
frequency reference
Prior art date
Application number
PCT/US2005/034016
Other languages
French (fr)
Other versions
WO2006101523A2 (en
Inventor
Michael Shannon P Mccorquodale
Scott Michael Pernia
Sundus Kubba
Original Assignee
Mobius Microsystems Inc
Michael Shannon P Mccorquodale
Scott Michael Pernia
Sundus Kubba
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
Priority claimed from US11/084,962 external-priority patent/US7227423B2/en
Application filed by Mobius Microsystems Inc, Michael Shannon P Mccorquodale, Scott Michael Pernia, Sundus Kubba filed Critical Mobius Microsystems Inc
Publication of WO2006101523A2 publication Critical patent/WO2006101523A2/en
Publication of WO2006101523A3 publication Critical patent/WO2006101523A3/en

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
    • 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
    • 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
    • H03L7/18—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop using a frequency divider or counter in the loop

Abstract

An apparatus, system and method are provided for low-latency start-up of a free-running harmonic oscillator. The exemplary apparatus embodiment comprises a first and second current sources to generate first and second currents; a bias current monitor adapted to detect a magnitude of the second current and to provide a control signal when the magnitude of the second current is equal to or greater than a predetermined magnitude; and a bias controller adapted to switch the first current from the oscillator and to switch the second current to the oscillator in response to the control signal. a reference voltage generator, a comparator, and a bias controller. Exemplary embodiments include reference voltage generator, a comparator, and a bias controller.
PCT/US2005/034016 2005-03-21 2005-09-21 Low-latency start-up for a monolithic clock generator and timing/frequency reference WO2006101523A2 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US11/084,962 2005-03-21
US11/084,962 US7227423B2 (en) 2004-03-22 2005-03-21 Monolithic clock generator and timing/frequency reference
US11/085,372 US7227424B2 (en) 2004-03-22 2005-03-21 Transconductance and current modulation for resonant frequency control and selection
US11/085,372 2005-03-21

Publications (2)

Publication Number Publication Date
WO2006101523A2 WO2006101523A2 (en) 2006-09-28
WO2006101523A3 true WO2006101523A3 (en) 2007-08-02

Family

ID=37024096

Family Applications (3)

Application Number Title Priority Date Filing Date
PCT/US2005/033979 WO2006101522A1 (en) 2005-03-21 2005-09-21 Frequency calibration for a monolithic clock generator and timing/frequency reference
PCT/US2005/034016 WO2006101523A2 (en) 2005-03-21 2005-09-21 Low-latency start-up for a monolithic clock generator and timing/frequency reference
PCT/US2005/034020 WO2006101524A2 (en) 2005-03-21 2005-09-21 Frequency controller for a monolithic clock generator and timing/frequency refrence

Family Applications Before (1)

Application Number Title Priority Date Filing Date
PCT/US2005/033979 WO2006101522A1 (en) 2005-03-21 2005-09-21 Frequency calibration for a monolithic clock generator and timing/frequency reference

Family Applications After (1)

Application Number Title Priority Date Filing Date
PCT/US2005/034020 WO2006101524A2 (en) 2005-03-21 2005-09-21 Frequency controller for a monolithic clock generator and timing/frequency refrence

Country Status (1)

Country Link
WO (3) WO2006101522A1 (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4387350A (en) * 1980-12-24 1983-06-07 Rca Corporation Watch circuit with oscillator gain control
US4956618A (en) * 1989-04-07 1990-09-11 Vlsi Technology, Inc. Start-up circuit for low power MOS crystal oscillator

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU5299600A (en) * 1999-05-26 2000-12-12 Broadcom Corporation Integrated vco
US6684065B2 (en) * 1999-12-20 2004-01-27 Broadcom Corporation Variable gain amplifier for low voltage applications
US6753738B1 (en) * 2001-06-25 2004-06-22 Silicon Laboratories, Inc. Impedance tuning circuit

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4387350A (en) * 1980-12-24 1983-06-07 Rca Corporation Watch circuit with oscillator gain control
US4956618A (en) * 1989-04-07 1990-09-11 Vlsi Technology, Inc. Start-up circuit for low power MOS crystal oscillator

Also Published As

Publication number Publication date
WO2006101524A3 (en) 2007-05-18
WO2006101522A1 (en) 2006-09-28
WO2006101524A2 (en) 2006-09-28
WO2006101523A2 (en) 2006-09-28

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