JP5237985B2 - プログラマブルロジックデバイス回路に結合されるクロックデータリカバリ回路 - Google Patents
プログラマブルロジックデバイス回路に結合されるクロックデータリカバリ回路 Download PDFInfo
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- G—PHYSICS
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- G11C7/00—Arrangements for writing information into, or reading information out from, a digital store
- G11C7/22—Read-write [R-W] timing or clocking circuits; Read-write [R-W] control signal generators or management
- G11C7/222—Clock generating, synchronizing or distributing circuits within memory device
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- H—ELECTRICITY
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- H03K19/00—Logic circuits, i.e. having at least two inputs acting on one output; Inverting circuits
- H03K19/02—Logic circuits, i.e. having at least two inputs acting on one output; Inverting circuits using specified components
- H03K19/173—Logic circuits, i.e. having at least two inputs acting on one output; Inverting circuits using specified components using elementary logic circuits as components
- H03K19/177—Logic circuits, i.e. having at least two inputs acting on one output; Inverting circuits using specified components using elementary logic circuits as components arranged in matrix form
- H03K19/17724—Structural details of logic blocks
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- H03K19/00—Logic circuits, i.e. having at least two inputs acting on one output; Inverting circuits
- H03K19/02—Logic circuits, i.e. having at least two inputs acting on one output; Inverting circuits using specified components
- H03K19/173—Logic circuits, i.e. having at least two inputs acting on one output; Inverting circuits using specified components using elementary logic circuits as components
- H03K19/177—Logic circuits, i.e. having at least two inputs acting on one output; Inverting circuits using specified components using elementary logic circuits as components arranged in matrix form
- H03K19/17736—Structural details of routing resources
- H03K19/17744—Structural details of routing resources for input/output signals
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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
- H03L7/07—Automatic control of frequency or phase; Synchronisation using a reference signal applied to a frequency- or phase-locked loop using several loops, e.g. for redundant clock signal generation
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- H—ELECTRICITY
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- 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
- H03L7/0802—Details of the phase-locked loop the loop being adapted for reducing power consumption
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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
- H03L7/08—Details of the phase-locked loop
- H03L7/081—Details of the phase-locked loop provided with an additional controlled phase shifter
- H03L7/0812—Details of the phase-locked loop provided with an additional controlled phase shifter and where no voltage or current controlled oscillator is used
- H03L7/0814—Details of the phase-locked loop provided with an additional controlled phase shifter and where no voltage or current controlled oscillator is used the phase shifting device being digitally controlled
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- H03L7/08—Details of the phase-locked loop
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- 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
- H03L7/183—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 a time difference being used for locking the loop, the counter counting between fixed numbers or the frequency divider dividing by a fixed number
- H03L7/187—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 a time difference being used for locking the loop, the counter counting between fixed numbers or the frequency divider dividing by a fixed number using means for coarse tuning the voltage controlled oscillator of the loop
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- 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
- H03L7/0891—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 the up-down pulses controlling source and sink current generators, e.g. a charge pump
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- 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
- H03L7/197—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 a time difference being used for locking the loop, the counter counting between numbers which are variable in time or the frequency divider dividing by a factor variable in time, e.g. for obtaining fractional frequency division
- H03L7/199—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 a time difference being used for locking the loop, the counter counting between numbers which are variable in time or the frequency divider dividing by a factor variable in time, e.g. for obtaining fractional frequency division with reset of the frequency divider or the counter, e.g. for assuring initial synchronisation
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- H—ELECTRICITY
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- H04L7/00—Arrangements for synchronising receiver with transmitter
- H04L7/0016—Arrangements for synchronising receiver with transmitter correction of synchronization errors
- H04L7/002—Arrangements for synchronising receiver with transmitter correction of synchronization errors correction by interpolation
- H04L7/0025—Arrangements for synchronising receiver with transmitter correction of synchronization errors correction by interpolation interpolation of clock signal
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L7/00—Arrangements for synchronising receiver with transmitter
- H04L7/02—Speed or phase control by the received code signals, the signals containing no special synchronisation information
- H04L7/033—Speed or phase control by the received code signals, the signals containing no special synchronisation information using the transitions of the received signal to control the phase of the synchronising-signal-generating means, e.g. using a phase-locked loop
- H04L7/0337—Selecting between two or more discretely delayed clocks or selecting between two or more discretely delayed received code signals
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Description
REFCLK*W=EMBCLK
ここでWは0.5,1,2,4等の適宜なスケールファクタとすることができる。要素22と30の間の点線はこれらの要素の出力の間に周波数相関性があることを示しており、従ってソース22によって形成される基準クロック信号の周波数(またはこの信号の任意の分数あるいは整数倍の周波数)がCDRデータ信号の周波数を確立するために要素30によって使用され得る。しかしながら、要素20と30の出力信号の間に特定の位相関係が存在する必要はない。
前述した説明から、(D信号を使用して選択される、可能ないくつかの周波数レンジいずれかの範囲において)クロック信号の周波数はVCO電流制御信号を変化させることによって上昇または低下させることができることが理解される。ドライバ132の閉ループを通じた真または補のパスは、全体としてクロック信号周期を8つの等時間インタバルに有効に分割する8つの点においてタップされる。これらの8つの点における信号は、前述した8つの等間隔で位相シフトされたクロック信号として出力される。
REFCLK*W=EMBCLK
ここでWは0.5,1,2,4等の適宜なスケールファクタとすることができる。この基準クロック信号は図1に関連して記述したようにトランスミッタ320に伝送される。トランスミッタ320内のPLL100は図2に関連して記述したようにこの信号を処理し、所要のCDRクロック周波数に正確に等しい周波数を有する出力信号を形成する。この信号は図2の出力と同様に8個のクロック信号のうち1つとすることができ、これはこの信号の位相が重要ではないからである。(以下により詳細に記述するように、一般的なCDR信号レシーバ350は位相多様型であり、従って特定の位相を有する受信CDR信号に束縛されることはない。)
Claims (13)
- CDR信号を生成し、送信する装置であって、
データ情報とPLDクロック信号とを生成するように構成されたPLD回路と、
リモートソースから基準クロック信号を受信するように構成された入力回路と、
該PDLクロック信号に関連付けられたクロックレジームと該基準クロック信号に関連付けられた異なるクロックレジームとの間において該データ情報をバッファリングするように構成されたバッファ回路であって、該クロックレジームは、異なる周波数を有している、バッファ回路と、
該基準クロック信号を用いて、該データ情報と、プログラム可能なスケールファクタによって該基準クロック信号に関連する周波数を有する埋め込まれたクロック信号とを含む該CDR信号を生成するように構成された出力回路と
を備えた、装置。 - 前記PLD回路、前記入力回路および前記出力回路のすべてが、単一の集積回路デバイスに集積されている、請求項1に記載の装置。
- 前記入力回路は、位相ロックループ回路を含む、請求項1に記載の装置。
- 前記位相ロックループ回路は、動作パラメータに対してプログラム可能である、請求項3に記載の装置。
- 前記位相ロックループ回路は、プログラム可能なパワーダウン信号に応答してパワーダウンするように構成されている、請求項3に記載の装置。
- 前記出力回路は、前記データ情報をパラレル形式からシリアル形式に変換するように構成されたシリアライザ回路を含む、請求項1に記載の装置。
- 前記シリアライザ回路は、動作パラメータに対してプログラム可能である、請求項6に記載の装置。
- 前記入力回路および前記出力回路のうちの少なくとも1つは、この少なくとも1つの回路の動作状態を示す状態監視信号を前記PLD回路に付与するように構成されている、請求項1に記載の装置。
- 前記入力回路および前記出力回路のうちの少なくとも1つは、前記PLD回路によって選択的に生成されたリセット信号によってリセットされる構成要素を含む、請求項1に記載の装置。
- 前記PLD回路は、前記データ情報と同期される非CDRクロック信号を生成するようにさらに構成されており、前記出力回路は、代替的な使用のために該非CDRクロック信号とパラレルに該データ情報を非CDR形式で出力するようにさらに構成されている、請求項1に記載の装置。
- 前記出力回路は、前記非CDRクロック信号を周波数スケールされた形式で出力する前に、該非CDRクロック信号を所定のスケールファクタによって選択的に周波数スケールするようにさらに構成されている、請求項10に記載の装置。
- 前記出力回路は、前記所定のスケールファクタに対してプログラム可能である、請求項11に記載の装置。
- 前記非CDR形式のデータ情報は、LVDS信号である、請求項10に記載の装置。
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JP2006128713A Expired - Lifetime JP4113898B2 (ja) | 2000-03-14 | 2006-05-02 | プログラマブルロジックデバイス回路に結合されるクロックデータリカバリ回路 |
JP2007105344A Expired - Lifetime JP4705604B2 (ja) | 2000-03-14 | 2007-04-12 | プログラマブルロジックデバイス回路に結合されるクロックデータリカバリ回路 |
JP2010101545A Expired - Lifetime JP5237985B2 (ja) | 2000-03-14 | 2010-04-26 | プログラマブルロジックデバイス回路に結合されるクロックデータリカバリ回路 |
JP2011000645A Expired - Lifetime JP5579629B2 (ja) | 2000-03-14 | 2011-01-05 | プログラマブルロジックデバイス回路に結合されるクロックデータリカバリ回路 |
JP2013095012A Withdrawn JP2013179659A (ja) | 2000-03-14 | 2013-04-30 | プログラマブルロジックデバイス回路に結合されるクロックデータリカバリ回路 |
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JP2013095012A Withdrawn JP2013179659A (ja) | 2000-03-14 | 2013-04-30 | プログラマブルロジックデバイス回路に結合されるクロックデータリカバリ回路 |
JP2014241261A Expired - Lifetime JP5933899B2 (ja) | 2000-03-14 | 2014-11-28 | プログラマブルロジックデバイス回路に結合されるクロックデータリカバリ回路 |
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EP (2) | EP1287633B1 (ja) |
JP (7) | JP3990570B2 (ja) |
AU (1) | AU2001245715A1 (ja) |
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US7430171B2 (en) | 1998-11-19 | 2008-09-30 | Broadcom Corporation | Fibre channel arbitrated loop bufferless switch circuitry to increase bandwidth without significant increase in cost |
US7227918B2 (en) * | 2000-03-14 | 2007-06-05 | Altera Corporation | Clock data recovery circuitry associated with programmable logic device circuitry |
WO2001084724A2 (en) | 2000-04-28 | 2001-11-08 | Broadcom Corporation | Methods and systems for adaptive receiver equalization |
US7024653B1 (en) * | 2000-10-30 | 2006-04-04 | Cypress Semiconductor Corporation | Architecture for efficient implementation of serial data communication functions on a programmable logic device (PLD) |
WO2002059779A1 (en) * | 2001-01-25 | 2002-08-01 | Telefonaktiebolaget L M Ericsson (Publ) | Method and apparatus for optimised indexing records of static data with different lenghts |
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Also Published As
Publication number | Publication date |
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US7227918B2 (en) | 2007-06-05 |
US20080031385A1 (en) | 2008-02-07 |
AU2001245715A1 (en) | 2001-09-24 |
US20010033188A1 (en) | 2001-10-25 |
JP2003527034A (ja) | 2003-09-09 |
EP1287633A2 (en) | 2003-03-05 |
JP2011142631A (ja) | 2011-07-21 |
DE60144544D1 (de) | 2011-06-09 |
US7684532B2 (en) | 2010-03-23 |
WO2001069837A2 (en) | 2001-09-20 |
JP4113898B2 (ja) | 2008-07-09 |
JP3990570B2 (ja) | 2007-10-17 |
EP2056516A1 (en) | 2009-05-06 |
WO2001069837A3 (en) | 2003-01-03 |
JP2015073313A (ja) | 2015-04-16 |
JP2010172014A (ja) | 2010-08-05 |
JP5933899B2 (ja) | 2016-06-15 |
EP2056516B1 (en) | 2011-04-27 |
JP2013179659A (ja) | 2013-09-09 |
JP4705604B2 (ja) | 2011-06-22 |
JP5579629B2 (ja) | 2014-08-27 |
JP2006262513A (ja) | 2006-09-28 |
WO2001069837A9 (en) | 2003-02-27 |
EP1287633B1 (en) | 2009-01-07 |
JP2007195254A (ja) | 2007-08-02 |
DE60137324D1 (de) | 2009-02-26 |
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