JP4121454B2 - クロック回路のための方法及び装置 - Google Patents
クロック回路のための方法及び装置 Download PDFInfo
- Publication number
- JP4121454B2 JP4121454B2 JP2003506104A JP2003506104A JP4121454B2 JP 4121454 B2 JP4121454 B2 JP 4121454B2 JP 2003506104 A JP2003506104 A JP 2003506104A JP 2003506104 A JP2003506104 A JP 2003506104A JP 4121454 B2 JP4121454 B2 JP 4121454B2
- Authority
- JP
- Japan
- Prior art keywords
- clock
- programmable delay
- delay circuit
- output
- coupled
- 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.)
- Expired - Fee Related
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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
- H03L7/0805—Details of the phase-locked loop the loop being adapted to provide an additional control signal for use outside the loop
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K5/00—Manipulating of pulses not covered by one of the other main groups of this subclass
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/04—Generating or distributing clock signals or signals derived directly therefrom
- G06F1/10—Distribution of clock signals, e.g. skew
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11C—STATIC STORES
- G11C7/00—Arrangements for writing information into, or reading information out from, a digital store
- G11C7/10—Input/output [I/O] data interface arrangements, e.g. I/O data control circuits, I/O data buffers
- G11C7/1072—Input/output [I/O] data interface arrangements, e.g. I/O data control circuits, I/O data buffers for memories with random access ports synchronised on clock signal pulse trains, e.g. synchronous memories, self timed memories
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11C—STATIC STORES
- 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
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K5/00—Manipulating of pulses not covered by one of the other main groups of this subclass
- H03K5/159—Applications of delay lines not covered by the preceding subgroups
-
- 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
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K5/00—Manipulating of pulses not covered by one of the other main groups of this subclass
- H03K2005/00286—Phase shifter, i.e. the delay between the output and input pulse is dependent on the frequency, and such that a phase difference is obtained independent of the frequency
Description
延グローバル・クロックDGCを供給する。
22の入力、及びフリップ・フロップ26のクロック入力に供給する。プログラマブル遅延回路22の出力は、プログラマブル遅延回路24の入力に結合されている。プログラマブル遅延回路24の出力は、Dフリップ・フロップ26のD入力に結合されている。同期部18は、更新バス32によって制御ユニット20に結合されており、更新イネーブル信号UEがプログラマブル遅延回路18に結合されている。プログラマブル遅延回路16、22、及び24は同一である。これらは必ずしも同一でなければいけない訳ではないが、これらは所与のプログラミング入力に対して実質的に同じ量の遅延を有していなければならないので、同じ特性を有するはずである。
的な意味ではなく、例示的な意味で解釈することとし、このような修正は全て本発明の範囲に含まれることを意図している。
Claims (1)
- マスタ・クロックから90度の遅延クロックを発生するクロック回路であって、
前記マスタ・クロックに結合された信号入力と、プログラミング入力と、出力とを有する第1のプログラマブル遅延回路と、前記第1のプログラマブル遅延回路の出力に結合される信号入力と、プログラミング入力と、出力クロックを供給するための出力とを有する第2のプログラマブル遅延回路とを含むプロセッサであって、前記マスタ・クロックと前記第1のプログラマブル遅延回路との間及び前記第1のプログラマブル遅延回路と前記第2のプログラマブル遅延回路との間にプログラマブル遅延回路が存在していない、プロセッサと、
信号入力と、プログラミング入力と、出力とを有する第3のプログラマブル遅延回路と
を備え、
前記プロセッサは更に前記第1、第2、及び第3のプログラマブル遅延回路の前記プログラミング入力に結合され、該第1、第2、及び第3のプログラマブル遅延回路をプログラムする制御ユニットと、
前記出力クロックを供給するための出力と、前記マスタ・クロックと、前記制御ユニットとに結合され、前記第1及び第2のプログラマブル遅延回路が合計180度の遅延を達成するときを前記制御ユニットに示す出力を有する出力を有するフリップ・フロップであって、前記出力クロックを供給するための出力と前記フリップ・フロップとの間にプログラマブル遅延回路が存在していない、フリップ・フロップと
を含み、前記第3のプログラマブル遅延回路は、前記マスタ・クロックに結合されて前記90度の遅延クロックを供給する、クロック回路。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US09/884,376 US6580301B2 (en) | 2001-06-18 | 2001-06-18 | Method and apparatus for a clock circuit |
PCT/US2002/018368 WO2002103911A2 (en) | 2001-06-18 | 2002-05-07 | Method and apparatus for a clock circuit |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2005518685A JP2005518685A (ja) | 2005-06-23 |
JP4121454B2 true JP4121454B2 (ja) | 2008-07-23 |
Family
ID=25384482
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2003506104A Expired - Fee Related JP4121454B2 (ja) | 2001-06-18 | 2002-05-07 | クロック回路のための方法及び装置 |
Country Status (9)
Country | Link |
---|---|
US (1) | US6580301B2 (ja) |
EP (1) | EP1402641B1 (ja) |
JP (1) | JP4121454B2 (ja) |
KR (1) | KR100894427B1 (ja) |
CN (1) | CN1265555C (ja) |
AU (1) | AU2002310382A1 (ja) |
DE (1) | DE60214379T2 (ja) |
TW (1) | TW567676B (ja) |
WO (1) | WO2002103911A2 (ja) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6718477B1 (en) * | 2000-03-06 | 2004-04-06 | William C. Plants | Delay locked loop for an FPGA architecture |
US7171575B1 (en) | 2000-03-06 | 2007-01-30 | Actel Corporation | Delay locked loop for and FPGA architecture |
EP1745486A1 (en) * | 2004-04-29 | 2007-01-24 | Koninklijke Philips Electronics N.V. | Multiple data rate ram memory controller |
US7755402B1 (en) * | 2006-04-28 | 2010-07-13 | Nvidia | Calibration of separate delay effects for multiple data strobe signals |
US7685454B2 (en) * | 2006-07-12 | 2010-03-23 | Agere Systems Inc. | Signal buffering and retiming circuit for multiple memories |
US7782109B2 (en) * | 2007-06-15 | 2010-08-24 | Mediatek Inc. | Delay circuit and related method |
US20080309391A1 (en) * | 2007-06-15 | 2008-12-18 | Chang-Po Ma | Delay circuit and related method thereof |
US9973178B1 (en) * | 2017-02-16 | 2018-05-15 | Nuvoton Technology Corporation | Method and apparatus for clock frequency multiplier |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4922141A (en) * | 1986-10-07 | 1990-05-01 | Western Digital Corporation | Phase-locked loop delay line |
DE69130043T2 (de) * | 1990-09-18 | 1999-04-15 | Fujitsu Ltd | Elektronische Anordnung mit einem Bezugsverzögerungsgenerator |
US5451894A (en) * | 1993-02-24 | 1995-09-19 | Advanced Micro Devices, Inc. | Digital full range rotating phase shifter |
JP2561037B2 (ja) * | 1994-08-30 | 1996-12-04 | 日本電気株式会社 | クロック信号分配回路 |
US5692165A (en) * | 1995-09-12 | 1997-11-25 | Micron Electronics Inc. | Memory controller with low skew control signal |
JP3487532B2 (ja) * | 1996-07-08 | 2004-01-19 | 株式会社東芝 | データ処理装置、半導体記憶装置、及びデータ処理方法 |
JP3378440B2 (ja) * | 1996-07-22 | 2003-02-17 | 株式会社東芝 | 演算装置及びその遅延時間制御方法 |
US6002282A (en) * | 1996-12-16 | 1999-12-14 | Xilinx, Inc. | Feedback apparatus for adjusting clock delay |
US6150863A (en) * | 1998-04-01 | 2000-11-21 | Xilinx, Inc. | User-controlled delay circuit for a programmable logic device |
JP2000049595A (ja) * | 1998-07-28 | 2000-02-18 | Fujitsu Ltd | Dll回路 |
US6229358B1 (en) * | 1999-12-15 | 2001-05-08 | International Business Machines Corporation | Delayed matching signal generator and frequency multiplier using scaled delay networks |
-
2001
- 2001-06-18 US US09/884,376 patent/US6580301B2/en not_active Expired - Lifetime
-
2002
- 2002-05-07 AU AU2002310382A patent/AU2002310382A1/en not_active Abandoned
- 2002-05-07 DE DE60214379T patent/DE60214379T2/de not_active Expired - Fee Related
- 2002-05-07 WO PCT/US2002/018368 patent/WO2002103911A2/en active IP Right Grant
- 2002-05-07 KR KR1020037016560A patent/KR100894427B1/ko not_active IP Right Cessation
- 2002-05-07 CN CNB028092651A patent/CN1265555C/zh not_active Expired - Fee Related
- 2002-05-07 EP EP02737453A patent/EP1402641B1/en not_active Expired - Lifetime
- 2002-05-07 JP JP2003506104A patent/JP4121454B2/ja not_active Expired - Fee Related
- 2002-05-24 TW TW091111067A patent/TW567676B/zh not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
US20020190772A1 (en) | 2002-12-19 |
CN1531778A (zh) | 2004-09-22 |
CN1265555C (zh) | 2006-07-19 |
EP1402641B1 (en) | 2006-08-30 |
US6580301B2 (en) | 2003-06-17 |
WO2002103911A2 (en) | 2002-12-27 |
WO2002103911A3 (en) | 2003-11-06 |
TW567676B (en) | 2003-12-21 |
AU2002310382A1 (en) | 2003-01-02 |
JP2005518685A (ja) | 2005-06-23 |
KR100894427B1 (ko) | 2009-04-22 |
DE60214379T2 (de) | 2006-12-21 |
DE60214379D1 (de) | 2006-10-12 |
KR20040014566A (ko) | 2004-02-14 |
EP1402641A2 (en) | 2004-03-31 |
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