JP6937194B2 - システム - Google Patents
システム Download PDFInfo
- Publication number
- JP6937194B2 JP6937194B2 JP2017163721A JP2017163721A JP6937194B2 JP 6937194 B2 JP6937194 B2 JP 6937194B2 JP 2017163721 A JP2017163721 A JP 2017163721A JP 2017163721 A JP2017163721 A JP 2017163721A JP 6937194 B2 JP6937194 B2 JP 6937194B2
- Authority
- JP
- Japan
- Prior art keywords
- level
- pulse
- signal
- signal level
- circuit
- 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.)
- Active
Links
Images
Classifications
-
- 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
- H04L7/0331—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 with a digital phase-locked loop [PLL] processing binary samples, e.g. add/subtract logic for correction of receiver clock
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L7/00—Arrangements for synchronising receiver with transmitter
- H04L7/0079—Receiver details
- H04L7/0087—Preprocessing of received signal for synchronisation, e.g. by code conversion, pulse generation or edge detection
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K3/00—Circuits for generating electric pulses; Monostable, bistable or multistable circuits
- H03K3/02—Generators characterised by the type of circuit or by the means used for producing pulses
- H03K3/021—Generators characterised by the type of circuit or by the means used for producing pulses by the use, as active elements, of more than one type of element or means, e.g. BIMOS, composite devices such as IGBT
-
- 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
- H03K5/22—Circuits having more than one input and one output for comparing pulses or pulse trains with each other according to input signal characteristics, e.g. slope, integral
- H03K5/24—Circuits having more than one input and one output for comparing pulses or pulse trains with each other according to input signal characteristics, e.g. slope, integral the characteristic being amplitude
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
- H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
- H04L25/03878—Line equalisers; line build-out devices
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/38—Synchronous or start-stop systems, e.g. for Baudot code
- H04L25/40—Transmitting circuits; Receiving circuits
- H04L25/49—Transmitting circuits; Receiving circuits using code conversion at the transmitter; using predistortion; using insertion of idle bits for obtaining a desired frequency spectrum; using three or more amplitude levels ; Baseband coding techniques specific to data transmission systems
- H04L25/4917—Transmitting circuits; Receiving circuits using code conversion at the transmitter; using predistortion; using insertion of idle bits for obtaining a desired frequency spectrum; using three or more amplitude levels ; Baseband coding techniques specific to data transmission systems using multilevel codes
-
- 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
- H04L7/027—Speed or phase control by the received code signals, the signals containing no special synchronisation information extracting the synchronising or clock signal from the received signal spectrum, e.g. by using a resonant or bandpass circuit
- H04L7/0276—Self-sustaining, e.g. by tuned delay line and a feedback path to a logical gate
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K3/00—Circuits for generating electric pulses; Monostable, bistable or multistable circuits
- H03K3/02—Generators characterised by the type of circuit or by the means used for producing pulses
- H03K3/027—Generators characterised by the type of circuit or by the means used for producing pulses by the use of logic circuits, with internal or external positive feedback
- H03K3/03—Astable circuits
- H03K3/0315—Ring oscillators
-
- 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
- H04L7/0334—Processing of samples having at least three levels, e.g. soft decisions
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Power Engineering (AREA)
- Nonlinear Science (AREA)
- Manipulation Of Pulses (AREA)
- Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
- Dc Digital Transmission (AREA)
- Synchronisation In Digital Transmission Systems (AREA)
Description
実施形態にかかる半導体集積回路1は、例えば、CDR(Clock Data Recovery)回路である。半導体集積回路1は、多値振幅変調信号φDIを受けて、多値振幅変調信号φDIからクロックφCKを再生し、再生されたクロックφCKを用いてデータφDOを再生する。半導体集積回路1は、クロックφCK及びデータφDOをそれぞれ出力する。このとき、クロックφCKを適正に再生させることが望まれる。
Claims (5)
- それぞれが互いに異なるデジタル値の複数ビットのパターンに対応するn値のデータに基づいてn値の振幅変調信号を生成し、前記n値の振幅変調信号を送信する送信機と、
前記n値の振幅変調信号を受信する受信機と、
を備え、
前記受信機は、
前記nを4以上の整数とするとき、前記n値の振幅変調信号を受けてクロックを再生するクロック再生回路を含む半導体集積回路を備え、
前記クロック再生回路は、
前記n値の振幅変調信号と(n−1)個の閾値とを比較して(n−1)個の比較結果を生成し前記(n−1)個の比較結果に応じて(n−1)個のパルスを生成する(n−1)個の比較パルスジェネレータと、前記生成された(n−1)個のパルスの合成パルスを生成する合成回路とを有する生成回路と、
前記合成パルスに同期して発振しクロックを生成する注入同期型の発振回路と、
を有する
システム。 - 前記(n−1)個の比較パルスジェネレータは、
前記n値の振幅変調信号のレベルと第1の閾値レベルとを比較して第1のパルスを生成する第1の比較パルスジェネレータと、
前記n値の振幅変調信号のレベルと第2の閾値レベルとを比較して第2のパルスを生成する第2の比較パルスジェネレータと、
前記n値の振幅変調信号のレベルと第3の閾値レベルとを比較して第3のパルスを生成する第3の比較パルスジェネレータと、
を有し、
前記合成回路は、前記第1のパルス、前記第2のパルス、及び前記第3のパルスを足し合わせて合成パルスを生成する
請求項1に記載のシステム。 - 前記n値の振幅変調信号は、第1の信号レベル及び第2の信号レベルを有し、
前記第1の比較パルスジェネレータは、
前記n値の振幅変調信号のレベルと前記第1の信号レベル及び前記第2の閾値レベルの間の前記第1の閾値レベルとを比較し、第1の比較結果を生成する第1のコンパレータと、
前記第1の比較結果に応じて前記第1のパルスを生成する第1のパルスジェネレータと、
を有し、
前記第2の比較パルスジェネレータは、
前記n値の振幅変調信号のレベルと前記第1の信号レベル及び前記第2の信号レベルの間の前記第2の閾値レベルとを比較し、第2の比較結果を生成する第2のコンパレータと、
前記第2の比較結果に応じて前記第2のパルスを生成する第2のパルスジェネレータと、
を有し、
前記第3の比較パルスジェネレータは、
前記n値の振幅変調信号のレベルと前記第2の閾値レベル及び前記第2の信号レベルの間の前記第3の閾値レベルとを比較し、第3の比較結果を生成する第3のコンパレータと、
前記第3の比較結果に応じて前記第3のパルスを生成する第3のパルスジェネレータと、
を有する
請求項2に記載のシステム。 - 前記n値の振幅変調信号は、
前記第1の信号レベル及び前記第2の信号レベルの間の第3の信号レベルと、
前記第2の信号レベル及び前記第3の信号レベルの間の第4の信号レベルと、
をさらに有し、
前記第1の閾値レベルは、前記第1の信号レベル及び前記第3の信号レベルの間にあり、
前記第2の閾値レベルは、前記第3の信号レベル及び前記第4の信号レベルの間にあり、
前記第3の閾値レベルは、前記第4の信号レベル及び前記第2の信号レベルの間にある
請求項3に記載のシステム。 - 前記半導体集積回路は、前記クロック再生回路で再生されたクロックに同期して、データを再生するデータ再生回路をさらに備えた
請求項1から4のいずれか1項に記載のシステム。
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2017163721A JP6937194B2 (ja) | 2017-08-28 | 2017-08-28 | システム |
US15/906,779 US10177903B1 (en) | 2017-08-28 | 2018-02-27 | Semiconductor integrated circuit and receiver |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2017163721A JP6937194B2 (ja) | 2017-08-28 | 2017-08-28 | システム |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2019041336A JP2019041336A (ja) | 2019-03-14 |
JP6937194B2 true JP6937194B2 (ja) | 2021-09-22 |
Family
ID=64872247
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2017163721A Active JP6937194B2 (ja) | 2017-08-28 | 2017-08-28 | システム |
Country Status (2)
Country | Link |
---|---|
US (1) | US10177903B1 (ja) |
JP (1) | JP6937194B2 (ja) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2020048053A (ja) * | 2018-09-19 | 2020-03-26 | キオクシア株式会社 | 送信装置及び通信システム |
KR20210103823A (ko) * | 2020-02-14 | 2021-08-24 | 에스케이하이닉스 주식회사 | 기계 학습 기술을 이용하는 클록 및 데이터 복구 장치 및 그 훈련 방법 |
KR20230014404A (ko) | 2021-07-21 | 2023-01-30 | 삼성전자주식회사 | 데이터 송수신 장치 |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60127470A (ja) | 1983-12-14 | 1985-07-08 | Tokyo Optical Co Ltd | 信号補正回路 |
JPS60258776A (ja) | 1984-06-06 | 1985-12-20 | Toshiba Corp | トラツキングエラ−信号のクロスエツジ検出回路 |
US5341405A (en) * | 1991-06-11 | 1994-08-23 | Digital Equipment Corporation | Data recovery apparatus and methods |
JPH08330950A (ja) * | 1995-05-31 | 1996-12-13 | Nec Corp | クロック再生回路 |
US7081777B2 (en) * | 2002-05-28 | 2006-07-25 | Realtek Semiconductor Corp. | Multiple-phase switching circuit |
US7751521B2 (en) * | 2004-11-16 | 2010-07-06 | Electronics And Telecommunications Research Institute | Clock and data recovery apparatus |
JP4778014B2 (ja) | 2008-03-26 | 2011-09-21 | 日本電信電話株式会社 | デューティ検出回路およびcdr回路 |
US9400179B2 (en) * | 2013-04-11 | 2016-07-26 | Littelfuse, Inc. | Propagation velocity compensated position measurement sensor |
US9281934B2 (en) * | 2014-05-02 | 2016-03-08 | Qualcomm Incorporated | Clock and data recovery with high jitter tolerance and fast phase locking |
US10003345B2 (en) * | 2014-12-11 | 2018-06-19 | Research & Business Foundation Sungkyunkwan University | Clock and data recovery circuit using digital frequency detection |
-
2017
- 2017-08-28 JP JP2017163721A patent/JP6937194B2/ja active Active
-
2018
- 2018-02-27 US US15/906,779 patent/US10177903B1/en active Active
Also Published As
Publication number | Publication date |
---|---|
US10177903B1 (en) | 2019-01-08 |
JP2019041336A (ja) | 2019-03-14 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US10103911B2 (en) | Receiver circuit and eye monitor system | |
US10225069B2 (en) | CDR circuit and receiving circuit | |
US9647825B2 (en) | Circuit and method for creating additional data transitions | |
JP6937194B2 (ja) | システム | |
JP5711949B2 (ja) | シリアルデータの受信回路、受信方法およびそれらを用いたシリアルデータの伝送システム、伝送方法 | |
KR102222622B1 (ko) | 지연 고정 루프 회로 | |
JP5600237B2 (ja) | 集積回路 | |
KR100667128B1 (ko) | 클럭 추출 회로 | |
US7456673B2 (en) | Multi-phase clock generator | |
US8634509B2 (en) | Synchronized clock phase interpolator | |
US10686435B2 (en) | Asymmetric pulse width comparator circuit and clock phase correction circuit including the same | |
JP2008228083A (ja) | 半導体集積回路 | |
US10756742B1 (en) | Clock recovery circuit and receiving device | |
US10050611B2 (en) | Oscillation circuit, voltage controlled oscillator, and serial data receiver | |
US11368341B2 (en) | Signal processing method and system, and non-transitory computer-readable recording medium | |
US10666234B2 (en) | Transmission circuit and integrated circuit | |
US9503104B2 (en) | Low power loss of lock detector | |
JP6512011B2 (ja) | 受信回路 | |
KR101610625B1 (ko) | 물리적 복제 방지 기능을 이용한 기기 인증 시스템 및 방법 | |
US9350527B1 (en) | Reception unit and receiving method | |
US10374615B2 (en) | Transmission circuit and integrated circuit | |
JP2020048053A (ja) | 送信装置及び通信システム | |
US20020025015A1 (en) | Recovery circuit generating low jitter reproduction clock | |
JP3513753B2 (ja) | 電圧制御オシレータ及びそれを用いたマルチビットレート・タイミング抽出回路 | |
JP7199302B2 (ja) | 通信インタフェース回路 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
A711 | Notification of change in applicant |
Free format text: JAPANESE INTERMEDIATE CODE: A712 Effective date: 20180905 |
|
A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20191126 |
|
A977 | Report on retrieval |
Free format text: JAPANESE INTERMEDIATE CODE: A971007 Effective date: 20200929 |
|
A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20201020 |
|
A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20201217 |
|
A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20210126 |
|
A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20210324 |
|
TRDD | Decision of grant or rejection written | ||
A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20210803 |
|
A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20210830 |
|
R150 | Certificate of patent or registration of utility model |
Ref document number: 6937194 Country of ref document: JP Free format text: JAPANESE INTERMEDIATE CODE: R150 |