KR940012090A - Clock divider - Google Patents
Clock divider Download PDFInfo
- Publication number
- KR940012090A KR940012090A KR1019920022177A KR920022177A KR940012090A KR 940012090 A KR940012090 A KR 940012090A KR 1019920022177 A KR1019920022177 A KR 1019920022177A KR 920022177 A KR920022177 A KR 920022177A KR 940012090 A KR940012090 A KR 940012090A
- Authority
- KR
- South Korea
- Prior art keywords
- clock pulse
- oscillator
- output
- divider
- clock
- Prior art date
Links
Classifications
-
- 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
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- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Synchronisation In Digital Transmission Systems (AREA)
- Pulse Circuits (AREA)
Abstract
본 발명은 클럭분주회로에 관한 것으로, 소정주파수를 갖는 발진 클럭펄스를 출력하는 발진기와; 상기 발진기로부터 출력된느 발진 클럭펄스를 분주기와;상기발진기로부터 출력되는 발진 클럭펄스에 동기하여 상기 분주기의 출력신호를 클럭펄스의 반주기동안 지연하여 출력하는 지연기와; 상기 발진기로부터 출력되는 발진 클럭펄스에 따라 “하이”레벨신호와 “로우”레벨신호중 그 하나를 교호적으로 선택함으로써 제1클럭펄스를 출력하는 제1선택수단과;상기 발진기로부터 출력되는 발진 클럭펄스에 따라 상기 분주기의 출력신호와 상기 지연기의 출력신호중 그 하나를 교호적으로 선택함으로써 제2클럭펄스를 출력하는 제2선택수단을 구비하여 서로 다른 주파수를 가진 제1클럭펄스 및 제2클럭펄스를 출력하는 제2선택수단을 구비하여 서로 다른 주파수를 가진 제1클럭펄스 및 제2클럭펄스의 엣지스큐를 최소화 하는 것을 특징으로 한다.The present invention relates to a clock divider circuit, comprising: an oscillator for outputting an oscillating clock pulse having a predetermined frequency; A divider for dividing an oscillating clock pulse output from the oscillator; and delaying and outputting an output signal of the divider for half a period of a clock pulse in synchronization with an oscillating clock pulse output from the oscillator; First selecting means for outputting a first clock pulse by alternately selecting one of a "high" level signal and a "low" level signal according to an oscillation clock pulse output from the oscillator; an oscillation clock pulse output from the oscillator; And a second selection means for outputting a second clock pulse by alternately selecting one of the output signal of the divider and the output signal of the delayer according to the first clock pulse and the second clock having different frequencies. It is characterized by minimizing the edge skew of the first clock pulse and the second clock pulse having a different frequency by providing a second selection means for outputting a pulse.
이와 같이 구성된 클럭분주회로는 휨(skew)현상이 일어나는 기간이 짧아지게 되어 이를 채용하는 시스템에서 각 소자들을 안정적으로 동작시킬수 있는 기간이 증가하므로 시스템의 성능을 향상시키는 효과가 있다.The clock division circuit configured as described above has an effect of improving the performance of the system because the period in which the skew phenomenon occurs is shortened and the period in which each element can be stably operated in the system employing the same increases.
Description
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음As this is a public information case, the full text was not included.
제2도는 본 발명에 따른 클럭분주회로의 블럭도이다2 is a block diagram of a clock division circuit according to the present invention.
제3도는 각부 파형도이다.3 is a waveform diagram of each part.
Claims (5)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019920022177A KR100265787B1 (en) | 1992-11-24 | 1992-11-24 | Clock division circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019920022177A KR100265787B1 (en) | 1992-11-24 | 1992-11-24 | Clock division circuit |
Publications (2)
Publication Number | Publication Date |
---|---|
KR940012090A true KR940012090A (en) | 1994-06-22 |
KR100265787B1 KR100265787B1 (en) | 2000-09-15 |
Family
ID=19343767
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1019920022177A KR100265787B1 (en) | 1992-11-24 | 1992-11-24 | Clock division circuit |
Country Status (1)
Country | Link |
---|---|
KR (1) | KR100265787B1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100455374B1 (en) * | 1997-12-12 | 2004-12-17 | 삼성전자주식회사 | Clock skew compensation apparatus which compensates for erroneous operation caused due to clock skew by second clock signal with frequency double of frequency of first clock signal, and clock skew compensation method for synchronous circuit |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20130046767A (en) | 2011-10-28 | 2013-05-08 | 에스케이하이닉스 주식회사 | Semiconductor device comprising test circuit and method for burn in test |
KR20130046766A (en) | 2011-10-28 | 2013-05-08 | 에스케이하이닉스 주식회사 | Integrated circuit |
-
1992
- 1992-11-24 KR KR1019920022177A patent/KR100265787B1/en not_active IP Right Cessation
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100455374B1 (en) * | 1997-12-12 | 2004-12-17 | 삼성전자주식회사 | Clock skew compensation apparatus which compensates for erroneous operation caused due to clock skew by second clock signal with frequency double of frequency of first clock signal, and clock skew compensation method for synchronous circuit |
Also Published As
Publication number | Publication date |
---|---|
KR100265787B1 (en) | 2000-09-15 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
A201 | Request for examination | ||
N231 | Notification of change of applicant | ||
E701 | Decision to grant or registration of patent right | ||
GRNT | Written decision to grant | ||
LAPS | Lapse due to unpaid annual fee |