CN109525245B - Programmable oscillator - Google Patents

Programmable oscillator Download PDF

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Publication number
CN109525245B
CN109525245B CN201811321799.9A CN201811321799A CN109525245B CN 109525245 B CN109525245 B CN 109525245B CN 201811321799 A CN201811321799 A CN 201811321799A CN 109525245 B CN109525245 B CN 109525245B
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China
Prior art keywords
timer
output end
data multiplexer
input end
crystal oscillator
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CN201811321799.9A
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Chinese (zh)
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CN109525245A (en
Inventor
蔡钦洪
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Shenzhen Yangxing Technology Co ltd
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Shenzhen Yangxing Technology Co ltd
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    • 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
    • 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
    • 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
    • H03L7/093—Details of the phase-locked loop concerning mainly the frequency- or phase-detection arrangement including the filtering or amplification of its output signal using special filtering or amplification characteristics in 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
    • H03L7/099—Details of the phase-locked loop concerning mainly the controlled oscillator of the loop
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Abstract

The invention provides a programmable oscillator, which comprises a crystal oscillator, an R-timer, a phase discriminator, a charge pump, a loop filter, a VCO, a P-timer, an M-timer, a digital interface, a data multiplexer 1 and a data multiplexer 2.

Description

Programmable oscillator
Technical Field
The present invention relates to a programmable oscillator.
Background
The main disadvantage of the traditional crystal oscillator is that the output frequency is greatly influenced by the process, the power supply voltage and the temperature change, the process is complicated, and the production period of the product is greatly increased.
Disclosure of Invention
In view of the above technical problems, the present invention provides a programmable oscillator, including a crystal oscillator, an R-timer, a phase detector, a charge pump, a loop filter, a VCO, a P-timer, an M-timer, a digital interface, a data multiplexer 1 and a data multiplexer 2;
the crystal oscillator comprises two leading-out ends XTAL1 and XTAL2, the output end of the crystal oscillator is connected with the input end of an R-timer, the output end of the R-timer is connected with one input end of a phase discriminator, the other input end of the phase discriminator is connected with the output end of an M-timer, the output end of the phase discriminator is connected with the input end of a charge pump, the output end of the charge pump is connected with the input end of a loop filter, the output end of the loop filter is connected with the input end of a VCO, the output end of the VCO is connected with the input end of the M-timer, the data multiplexer 1 is a 2-choice data multiplexer, one input end of the data multiplexer 1 is connected with the output end of the VCO, the other input end of the data multiplexer 1 is connected with the output end of a P-timer, the output end of the crystal oscillator is a 3-choice data multiplexer, the three input ends of the data multiplexer 2 are respectively connected with the output end of the P-timer, the output end of the crystal oscillator is a digital interface, the output end of the data multiplexer 2 is led out of the data multiplexer is a CLK port, and the digital interface is led out of an OE port.
Further, the R-timer, M-timer, P-timer, and digital interface are adjustable.
Compared with the prior art, the invention has the beneficial effects that: the programmable oscillator can change the sensitivity of the traditional oscillator process, the power supply voltage and the temperature change, further simplify the traditional oscillator process, avoid the risk of multiple links to cause problems, and realize full-automatic batch production in a short period and stable quality.
Drawings
Fig. 1 is a circuit configuration diagram of a programmable oscillator according to the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1, a programmable oscillator includes a crystal oscillator, an R-timer, a phase detector, a charge pump, a loop filter, a VCO, a P-timer, an M-timer, a digital interface, a data multiplexer 1, and a data multiplexer 2.
The crystal oscillator comprises two leading-out ends XTAL1 and XTAL2, the output end of the crystal oscillator is connected with the input end of an R-timer, the output end of the R-timer is connected with one input end of a phase discriminator, the other input end of the phase discriminator is connected with the output end of an M-timer, the output end of the phase discriminator is connected with the input end of a charge pump, the output end of the charge pump is connected with the input end of a loop filter, the output end of the loop filter is connected with the input end of a VCO, the output end of the VCO is connected with the input end of the M-timer, the data multiplexer 1 is a 2-choice data multiplexer, one input end of the data multiplexer 1 is connected with the output end of the VCO, the other input end of the data multiplexer 1 is connected with the output end of a P-timer, the output end of the crystal oscillator is a 3-choice data multiplexer, the three input ends of the data multiplexer 2 are respectively connected with the output end of the P-timer, the output end of the crystal oscillator is a digital interface, the output end of the data multiplexer 2 is led out of the data multiplexer is a CLK port, and the digital interface is led out of an OE port.
The R-timer, M-timer, P-timer and digital interface are adjustable.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made hereto without departing from the spirit and scope of the invention as defined by the appended claims.

Claims (2)

1. A programmable oscillator, characterized by: the circuit comprises a crystal oscillator, an R-timer, a phase discriminator, a charge pump, a loop filter, a VCO, a P-timer, an M-timer, a digital interface, a data multiplexer 1 and a data multiplexer 2;
the crystal oscillator comprises two leading-out ends XTAL1 and XTAL2, the output end of the crystal oscillator is connected with the input end of an R-timer, the output end of the R-timer is connected with one input end of a phase discriminator, the other input end of the phase discriminator is connected with the output end of an M-timer, the output end of the phase discriminator is connected with the input end of a charge pump, the output end of the charge pump is connected with the input end of a loop filter, the output end of the loop filter is connected with the input end of a VCO, the output end of the VCO is connected with the input end of the M-timer, the data multiplexer 1 is a 2-choice data multiplexer, one input end of the data multiplexer 1 is connected with the output end of the VCO, the other input end of the data multiplexer 1 is connected with the output end of a P-timer, the output end of the crystal oscillator is a 3-choice data multiplexer, the three input ends of the data multiplexer 2 are respectively connected with the output end of the P-timer, the output end of the crystal oscillator is a digital interface, the output end of the data multiplexer 2 is led out of the data multiplexer is a CLK port, and the digital interface is led out of an OE port.
2. A programmable oscillator as claimed in claim 1, characterized in that: the R-timer, M-timer, P-timer and digital interface are adjustable.
CN201811321799.9A 2018-11-07 2018-11-07 Programmable oscillator Active CN109525245B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201811321799.9A CN109525245B (en) 2018-11-07 2018-11-07 Programmable oscillator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201811321799.9A CN109525245B (en) 2018-11-07 2018-11-07 Programmable oscillator

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CN109525245B true CN109525245B (en) 2023-04-25

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009033070A1 (en) * 2009-07-03 2011-01-05 Texas Instruments Deutschland Gmbh Half-digital phase-locked-loop circuit has voltage-controlled oscillator with analog control inlet and digital control inlet, phase or frequency detector with reference entrance and feedback entrance
CN103297042A (en) * 2013-06-24 2013-09-11 中国科学院微电子研究所 Charge pump phase-locked loop circuit capable of performing locking fast
CN104202048A (en) * 2014-08-27 2014-12-10 中国科学技术大学 Broadband totally-integrated phase-locked loop frequency synthesizer
CN105959002A (en) * 2016-05-18 2016-09-21 成都福兰特电子技术股份有限公司 Wireless signal emission system of aviation communication

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7268630B2 (en) * 2005-04-25 2007-09-11 International Business Machines Corporation Phase-locked loop using continuously auto-tuned inductor-capacitor voltage controlled oscillator
US7663415B2 (en) * 2005-12-30 2010-02-16 Stmicroelectronics Pvt. Ltd. Phase locked loop (PLL) method and architecture

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009033070A1 (en) * 2009-07-03 2011-01-05 Texas Instruments Deutschland Gmbh Half-digital phase-locked-loop circuit has voltage-controlled oscillator with analog control inlet and digital control inlet, phase or frequency detector with reference entrance and feedback entrance
CN103297042A (en) * 2013-06-24 2013-09-11 中国科学院微电子研究所 Charge pump phase-locked loop circuit capable of performing locking fast
CN104202048A (en) * 2014-08-27 2014-12-10 中国科学技术大学 Broadband totally-integrated phase-locked loop frequency synthesizer
CN105959002A (en) * 2016-05-18 2016-09-21 成都福兰特电子技术股份有限公司 Wireless signal emission system of aviation communication

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
唐玉兰 ; 陈建慧 ; 赵吉 ; .一种高性能电荷泵锁相环电路的设计与实现.西北师范大学学报(自然科学版).2018,(02),全文. *
朱晓维,周建义,洪伟.数字可编程微波/射频集成锁相源的研制与应用.微波学报.1999,(02),全文. *

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