KR970064055A - Stable clock return circuit when powered - Google Patents

Stable clock return circuit when powered Download PDF

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Publication number
KR970064055A
KR970064055A KR1019960004622A KR19960004622A KR970064055A KR 970064055 A KR970064055 A KR 970064055A KR 1019960004622 A KR1019960004622 A KR 1019960004622A KR 19960004622 A KR19960004622 A KR 19960004622A KR 970064055 A KR970064055 A KR 970064055A
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KR
South Korea
Prior art keywords
clock
unit
data
pll
data processing
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KR1019960004622A
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Korean (ko)
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박민식
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권문구
Lg 전선주식회사(전선)
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Priority to KR1019960004622A priority Critical patent/KR970064055A/en
Publication of KR970064055A publication Critical patent/KR970064055A/en

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Abstract

본 발명은 통신장비간의 데이타전송에 있어서, 장비에 전원인가시 수신된 데이타로부너 정상적으로 클럭을 복구시키기 위한 전원인가시 안정적인 클럭복구회로에 관한 것으로서, 수신 광모듈은 캐리어디택트(carrier detect)와 린(RIN) 으로 송신하고, PLL수단은 전원인가시 수신된 데이타로부터 클럭을 정상적으로 복원시키며, 데이타처리수단은 데이타처리부와 데이타처리부와 데이타 송신부와 제 3PLL로 구성되고, 전원감지부는 전원의 인가를 감지하여 특정시간동안 전기적으로 0을 송신하며, 판단신호부에서는 전원감지부의 신호와 수신 광모듈의 르피(LFI)신호를 비교하여 이들중 적어도 하나의 값이 0이면 전기적으로 0을 송신하도록 동작하며, 선택신호부에서는 데이터처리수단에서부터 망동기 하기 위한 19.44MHz의 클럭과 자체클럭생상부로부터 송신되는 19.44MHz의 차체클럭을 비교하여, 즉 전원인가시에 전원감지부와 판단신호와 선택신호부의 동작으로 일정시간동안자체클럭을 발생시키므로서, PLL수단의 상용칩을 사용한 공중망장비에서 데이타가 전송중인 상태에서도 정상적으로 수신데이타에서 클릭을 복원시킬 수있는 발명이다.The present invention relates to a stable clock recovery circuit when power is applied to recover data from a receiver when data is transferred between communication devices, and the receiving optical module includes a carrier detector And the PLL unit normally restores the clock from the data received when power is applied. The data processing unit includes a data processing unit, a data processing unit, a data transmitting unit, and a third PLL. (LFI) signal of the receiving optical module, and when the value of at least one of them is '0', it is electrically operated to transmit '0' A 19.44 MHz clock for network synchronization from the data processing means, The control unit generates the self clock for a predetermined period of time by comparing the body clock of 19.44 MHz, that is, the power sensing unit, the determination signal, and the selection signal unit when the power is applied, It is possible to restore the click from the reception data normally.

Description

전원인가시 안정적인 클럭복귀회로Stable clock return circuit when powered

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is a trivial issue, I did not include the contents of the text.

제 1도는 본 발명의 전인가시 안정적인 클럭복구회로이다.FIG. 1 is a stable clock recovery circuit in the pre-application of the present invention.

Claims (5)

통신장비의 데이타전송에 이용되는 전원인가시 안정적인 클럭복구회로에 있어서, 수신 광모듈은 광파이버로부터 들어온 광데이타를 받은 후 캐리어디텍트(carrier detect)와 린(RIN)으로 송신하고, PLL수단은 전원인가시 수신된 데이타로부터 클럭을 정상적으로 북원시키며, 데이타처리수단은 데이타처리부와 데이타송신부와 제3PLL로 구성되고, 전원감지부는 전원의 인가를 감지하여 특정시간동안 전기적으로0을 송신하며, 판단신호부에서는 전원감지부의 신호와 수신 광모듈의 르피(LFI)신호를 비교하여 이들중 적어도 하나의 값이 "0"이면 전기적으로 0을 송신하도록 동작하며, 선택신호부에서는 데이타처리수단에서부터 망동기하기 위한19.44MHz의 클럭과 자체클럭생성부로부터 송신되는 19.44MHz의 차체클럭을 비교하여 전기적으로 신호가"0"이면 자체클럭을 PLL수단으로 송신하고 전기적인 신호가1이면 망동기 위한 클럭을 PLL수단으로 송신하는 것을 특징으로 하는 전원인가시 안정적인 클럭복귀회로.In a stable clock recovery circuit used for data transmission of communication equipment, a receiving optical module receives optical data from an optical fiber, and then transmits the data to a carrier detect and a lin (RIN) The data processing unit includes a data processing unit, a data transmitting unit, and a third PLL. The power sensing unit senses application of the power source and electrically transmits a 0 for a predetermined time, (LFI) signal of the receiving optical module, and when the value of at least one of them is "0 ", it electrically operates to transmit 0. In the selection signal portion, A 19.44MHz clock is compared with a 19.44MHz body clock transmitted from the self clock generator, and if the signal is electrically "0" And a clock for network synchronization is transmitted to the PLL means when the electric signal is 1. The clock recovery circuit according to claim 1, 제1항에 있어서, 상기PLL수단에는 다수개의 버퍼와, 제1 및 제2PLL로 구성되어 있는 것을 특징으로하는 전원인가시 안정적인 클럭복귀회로.2. The clock recovery circuit of claim 1, wherein the PLL means comprises a plurality of buffers, and first and second PLLs. 제2항에 있어서, 상기 제1PLL은 수신 광모듈에서 송신되는 린과 선택신호로부터 송신되는 기준클럭이 상기제1PLL에 입력된 후 수신시리얼과 155MHz의 수신클럭을 송신하는 것을 특징으로 하는 전원인가시 안정적인 클럭복귀회로.3. The method of claim 2, wherein the first PLL transmits a reception clock of 155 MHz and a reception serial after the reference clock transmitted from the reception optical module and the reference clock transmitted from the selection signal is input to the first PLL. Stable clock return circuit. 제2항에 있어서, 상기 제2PLL은 선택신호부로부터 기준클럭이 입력된 후 송신클럭을 송신하는 것을 특징으로하는 전원인가시 안정적인 클럭복귀회로.3. The circuit of claim 2, wherein the second PLL transmits a transmission clock after a reference clock is input from the selection signal unit. 제1항에 있어서, 상기 데이타처리수단에는 제1PLL에서 송신되는 수신시리얼고 수신클럭이 입력되는 데이타부와, 상기 수신클럭이 입력되어 155MHz의 수신클럭을 8분주(155MHz/8=19.44MHz)하여 망동기를 제공하기 위해서 선택신호부에 입력시키는 제3PLL과, 제2PLL에서 송신되는 송신클럭이 입력되어 155MHz의 송신시리얼을 PLL수단으로 송신하는 데이터송신부로 구성되어 있는 것을 특징으로 하는 전원인가시 안정적인 클럭복구회로.The data processing apparatus according to claim 1, wherein the data processing means comprises: a data unit to which a receiving serial high-frequency receiving clock transmitted from the first PLL is input; and a receiving unit which receives the receiving clock and divides the receiving clock by 155 Hz / 8 = 19.44 MHz And a data transmission unit for transmitting a 155 MHz transmission serial to the PLL unit by inputting a transmission clock transmitted from the second PLL, and a data transmission unit for transmitting a stable clock Recovery circuit. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: It is disclosed by the contents of the first application.
KR1019960004622A 1996-02-26 1996-02-26 Stable clock return circuit when powered KR970064055A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100435557B1 (en) * 1997-12-31 2004-10-14 서창전기통신 주식회사 Method for supplying power of an rf-module, particularly concerned with controlling a power supply of the rf-module by using an ld signal of a pll and a switch

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100435557B1 (en) * 1997-12-31 2004-10-14 서창전기통신 주식회사 Method for supplying power of an rf-module, particularly concerned with controlling a power supply of the rf-module by using an ld signal of a pll and a switch

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