CA2050901A1 - Frequency synthesizer with an interface controller and buffer memory - Google Patents

Frequency synthesizer with an interface controller and buffer memory

Info

Publication number
CA2050901A1
CA2050901A1 CA2050901A CA2050901A CA2050901A1 CA 2050901 A1 CA2050901 A1 CA 2050901A1 CA 2050901 A CA2050901 A CA 2050901A CA 2050901 A CA2050901 A CA 2050901A CA 2050901 A1 CA2050901 A1 CA 2050901A1
Authority
CA
Canada
Prior art keywords
buffer memory
loop circuit
phase lock
lock loop
frequency synthesizer
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.)
Granted
Application number
CA2050901A
Other languages
French (fr)
Other versions
CA2050901C (en
Inventor
Barry Wayne Herold
Omid Tahernia
Walter Lee Davis
Mario Alberto Rivas
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.)
Motorola Solutions Inc
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of CA2050901A1 publication Critical patent/CA2050901A1/en
Application granted granted Critical
Publication of CA2050901C publication Critical patent/CA2050901C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
    • H03J5/00—Discontinuous tuning; Selecting predetermined frequencies; Selecting frequency bands with or without continuous tuning in one or more of the bands, e.g. push-button tuning, turret tuner
    • H03J5/02—Discontinuous tuning; Selecting predetermined frequencies; Selecting frequency bands with or without continuous tuning in one or more of the bands, e.g. push-button tuning, turret tuner with variable tuning element having a number of predetermined settings and adjustable to a desired one of these settings
    • H03J5/0245—Discontinuous tuning using an electrical variable impedance element, e.g. a voltage variable reactive diode, in which no corresponding analogue value either exists or is preset, i.e. the tuning information is only available in a digital form
    • H03J5/0272—Discontinuous tuning using an electrical variable impedance element, e.g. a voltage variable reactive diode, in which no corresponding analogue value either exists or is preset, i.e. the tuning information is only available in a digital form the digital values being used to preset a counter or a frequency divider in a phase locked loop, e.g. frequency synthesizer
    • H03J5/0281—Discontinuous tuning using an electrical variable impedance element, e.g. a voltage variable reactive diode, in which no corresponding analogue value either exists or is preset, i.e. the tuning information is only available in a digital form the digital values being used to preset a counter or a frequency divider in a phase locked loop, e.g. frequency synthesizer the digital values being held in an auxiliary non erasable memory

Abstract

A frequency synthesizer (fig. 1), which has at least one programmably characterized phase lock loop circuit (10,14) in-cludes a buffer memory (40,fig.4) and an interface controller (38,fig.2) responsive to operational codes received from a central controller (12) to direct transfer of data words (50,52) for characterization of the phase lock loop circuit among the at least one phase lock loop circuit, the buffer memory, and the central controller. In one embodiment, the transfer of data words between the central controller and phase lock loop circuit or buffer memory are performed serially in accordance with a prespecified protocol and governed by a clock signal generated by the central controller. Data word transfers between the buffer memory and at least one phase lock loop circuit may also be performed serially in accordance with a prespecified protocol, but may be governed auto-nomously by an internal clock signal generated by the frequency synthesizer.
CA002050901A 1989-06-29 1990-05-18 Frequency synthesizer with an interface controller and buffer memory Expired - Fee Related CA2050901C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US07/372,997 US4901036A (en) 1989-06-29 1989-06-29 Frequency synthesizer with an interface controller and buffer memory
US372,997 1989-06-29

Publications (2)

Publication Number Publication Date
CA2050901A1 true CA2050901A1 (en) 1990-12-30
CA2050901C CA2050901C (en) 1995-03-21

Family

ID=23470498

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002050901A Expired - Fee Related CA2050901C (en) 1989-06-29 1990-05-18 Frequency synthesizer with an interface controller and buffer memory

Country Status (10)

Country Link
US (1) US4901036A (en)
EP (1) EP0479932B1 (en)
JP (1) JPH04506592A (en)
KR (1) KR950010143B1 (en)
CN (1) CN1013628B (en)
AT (1) ATE141452T1 (en)
CA (1) CA2050901C (en)
DE (1) DE69028113T2 (en)
HK (1) HK1004583A1 (en)
WO (1) WO1991000651A1 (en)

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US5163161A (en) * 1989-11-07 1992-11-10 Crum Development Corp. Fast scanning radio receiver with frequency data base management by remote processor
US6324120B2 (en) 1990-04-18 2001-11-27 Rambus Inc. Memory device having a variable data output length
US6751696B2 (en) 1990-04-18 2004-06-15 Rambus Inc. Memory device having a programmable register
IL96808A (en) 1990-04-18 1996-03-31 Rambus Inc Integrated circuit i/o using a high performance bus interface
US5257409A (en) * 1991-10-18 1993-10-26 Motorola, Inc. Frequency synthesizer with programming feedback
WO1993025954A2 (en) * 1992-06-11 1993-12-23 Sierra Semiconductor Corporation A universal programming interface for clock generators
US5289141A (en) * 1992-10-13 1994-02-22 Motorola, Inc. Method and apparatus for digital modulation using concurrent pulse addition and subtraction
US20020091850A1 (en) 1992-10-23 2002-07-11 Cybex Corporation System and method for remote monitoring and operation of personal computers
US5487181A (en) * 1992-10-28 1996-01-23 Ericsson Ge Mobile Communications Inc. Low power architecture for portable and mobile two-way radios
US5436599A (en) * 1993-04-23 1995-07-25 Motorola, Inc. Method and apparatus for digital modulation using pulse addition
EP0629933A1 (en) * 1993-06-15 1994-12-21 International Business Machines Corporation An auto-sequenced state machine
DE4498746T1 (en) * 1993-11-09 1997-07-31 Motorola Inc Device and method for releasing elements of a phase-locked loop
US5432521A (en) * 1994-01-14 1995-07-11 Motorola, Inc. Satellite receiver system having doppler frequency shift tracking
US5551071A (en) * 1994-02-15 1996-08-27 Uniden Corp. Channel sorting scanning receiver
US5483684A (en) * 1994-03-03 1996-01-09 Uniden America Corporation Automatic frequency search and storage method
US5465402A (en) * 1994-03-23 1995-11-07 Uniden America Corp. Automatic frequency transfer and storage method
US5485129A (en) * 1995-01-20 1996-01-16 Motorola, Inc. Method and apparatus for digital modulation using pulse deletion
US5721842A (en) * 1995-08-25 1998-02-24 Apex Pc Solutions, Inc. Interconnection system for viewing and controlling remotely connected computers with on-screen video overlay for controlling of the interconnection switch
US5630222A (en) * 1995-12-04 1997-05-13 Motorola Inc. Method and apparatus for generating multiple signals at multiple frequencies
JPH09294088A (en) * 1996-04-26 1997-11-11 Toshiba Corp Tuner circuit
US6209071B1 (en) 1996-05-07 2001-03-27 Rambus Inc. Asynchronous request/synchronous data dynamic random access memory
GB2336731A (en) 1998-04-22 1999-10-27 Thomson Multimedia Sa A video tuner in which data representing a PLL division is used to control other circuit parameters
JP4146089B2 (en) * 1998-09-22 2008-09-03 アボセント ハンツヴィル コーポレーション System for remote access to personal computers
US6704556B1 (en) 2000-09-25 2004-03-09 Motorola Inc. Communication device utilizing channel based oscillator aging compensation and method therefor
US6806729B2 (en) * 2001-01-19 2004-10-19 Dell Products L.P. Ground bounce detection circuit for use in data error reduction
US9606795B1 (en) * 2005-05-05 2017-03-28 Alcatel-Lucent Usa Inc. Providing intelligent components access to an external interface
WO2007099875A1 (en) * 2006-02-24 2007-09-07 Nihon Dempa Kogyo Co., Ltd. Pll circuit
TWI404340B (en) * 2009-11-23 2013-08-01 Mstar Semiconductor Inc Offset phase-locked loop transmitter and method thereof

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5637779A (en) * 1979-09-05 1981-04-11 Sony Corp Television picture receiver
EP0033390A1 (en) * 1979-12-27 1981-08-12 DEBEG GmbH Scanning radio receiver and transmitter
US4280140A (en) * 1980-02-19 1981-07-21 Zenith Radio Corporation Microcomputer-controlled one-step-back automatic frequency control tuning system
US4476580A (en) * 1980-06-17 1984-10-09 Sanyo Electric Co., Ltd. Automatic continuous tuning control apparatus for a receiver
JPS5732123A (en) * 1980-08-05 1982-02-20 Toshiba Corp Channel selector
US4516170A (en) * 1982-04-12 1985-05-07 Zenith Electronics Corporation Dual mode UHF tuning system
JPS59218049A (en) * 1983-07-27 1984-12-08 Nec Corp Channel selecting device
JPS6093826A (en) * 1983-10-27 1985-05-25 Toshiba Corp Data correcting device of variable frequency generator
JPS60220627A (en) * 1984-04-17 1985-11-05 Matsushita Electric Ind Co Ltd Phase locked loop
JPH0659018B2 (en) * 1985-07-25 1994-08-03 ソニー株式会社 PLL control device
JP2747583B2 (en) * 1987-06-04 1998-05-06 セイコーエプソン株式会社 Liquid crystal panel drive circuit and liquid crystal device

Also Published As

Publication number Publication date
CN1048470A (en) 1991-01-09
WO1991000651A1 (en) 1991-01-10
JPH04506592A (en) 1992-11-12
DE69028113D1 (en) 1996-09-19
ATE141452T1 (en) 1996-08-15
EP0479932A4 (en) 1992-10-07
US4901036A (en) 1990-02-13
KR950010143B1 (en) 1995-09-07
CA2050901C (en) 1995-03-21
EP0479932A1 (en) 1992-04-15
HK1004583A1 (en) 1998-11-27
KR920702802A (en) 1992-10-06
DE69028113T2 (en) 1997-03-06
EP0479932B1 (en) 1996-08-14
CN1013628B (en) 1991-08-21

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