JP5320345B2 - 配線基板 - Google Patents
配線基板 Download PDFInfo
- Publication number
- JP5320345B2 JP5320345B2 JP2010132354A JP2010132354A JP5320345B2 JP 5320345 B2 JP5320345 B2 JP 5320345B2 JP 2010132354 A JP2010132354 A JP 2010132354A JP 2010132354 A JP2010132354 A JP 2010132354A JP 5320345 B2 JP5320345 B2 JP 5320345B2
- Authority
- JP
- Japan
- Prior art keywords
- wiring
- clock
- common mode
- length
- choke coil
- 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.)
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- 230000005540 biological transmission Effects 0.000 claims description 32
- 238000011156 evaluation Methods 0.000 description 13
- 238000013016 damping Methods 0.000 description 6
- 239000010410 layer Substances 0.000 description 6
- 239000000758 substrate Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 230000006870 function Effects 0.000 description 5
- 238000004904 shortening Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000005259 measurement Methods 0.000 description 4
- 230000001603 reducing effect Effects 0.000 description 4
- 238000012546 transfer Methods 0.000 description 4
- 230000002238 attenuated effect Effects 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000011889 copper foil Substances 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11C—STATIC STORES
- G11C5/00—Details of stores covered by group G11C11/00
- G11C5/06—Arrangements for interconnecting storage elements electrically, e.g. by wiring
- G11C5/063—Voltage and signal distribution in integrated semi-conductor memory access lines, e.g. word-line, bit-line, cross-over resistance, propagation delay
Landscapes
- Structure Of Printed Boards (AREA)
Description
10 メモリコントローラ
20 DDRメモリ
30 パラレルバス
31 クロック配線
50 コモンモードチョークコイル
Claims (3)
- メモリ、及び該メモリを制御するメモリコントローラが実装される配線基板であって、
前記メモリと前記メモリコントローラとを接続する複数の等長配線を有し、
前記複数の等長配線は、コモンモードチョークコイルを介して接続される差動伝送線路、及び、コモンモードチョークコイルを介することなく接続される等長配線を含み、
前記差動伝送線路は、前記コモンモードチョークコイルによる伝送信号の遅延時間に相当する配線長に応じて、伝送線路の長さが前記コモンモードチョークコイルを介することなく接続される等長配線の配線長よりも短く設定されていることを特徴とする配線基板。 - 前記メモリは、DDRメモリであることを特徴とする請求項1に記載の配線基板。
- 前記差動伝送線路は、クロック信号を伝送するクロック配線であることを特徴とする請求項1又は2に記載の配線基板。
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2010132354A JP5320345B2 (ja) | 2010-06-09 | 2010-06-09 | 配線基板 |
US13/156,049 US8659927B2 (en) | 2010-06-09 | 2011-06-08 | Wiring substrate in which equal-length wires are formed |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2010132354A JP5320345B2 (ja) | 2010-06-09 | 2010-06-09 | 配線基板 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2011258775A JP2011258775A (ja) | 2011-12-22 |
JP5320345B2 true JP5320345B2 (ja) | 2013-10-23 |
Family
ID=45096115
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2010132354A Active JP5320345B2 (ja) | 2010-06-09 | 2010-06-09 | 配線基板 |
Country Status (2)
Country | Link |
---|---|
US (1) | US8659927B2 (ja) |
JP (1) | JP5320345B2 (ja) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5646415B2 (ja) * | 2011-08-31 | 2014-12-24 | 株式会社東芝 | 半導体パッケージ |
JP6108690B2 (ja) * | 2012-06-06 | 2017-04-05 | キヤノン株式会社 | 差動伝送回路及び電子機器 |
WO2016072337A1 (en) * | 2014-11-04 | 2016-05-12 | Canon Kabushiki Kaisha | Printed circuit board, printed wiring board, and differential transmission circuit |
JP6614903B2 (ja) * | 2014-11-04 | 2019-12-04 | キヤノン株式会社 | プリント回路板及びプリント配線板 |
JP2017199879A (ja) * | 2016-04-28 | 2017-11-02 | 富士通株式会社 | 配線基板 |
JP2019025261A (ja) * | 2017-08-04 | 2019-02-21 | 株式会社三共 | 遊技機 |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH05275960A (ja) | 1992-03-25 | 1993-10-22 | Tdk Corp | チップディレーライン |
JP3929116B2 (ja) | 1997-07-04 | 2007-06-13 | 富士通株式会社 | メモリサブシステム |
JP2005302810A (ja) * | 2004-04-07 | 2005-10-27 | Murata Mfg Co Ltd | ノイズ対策部品 |
US7796420B2 (en) * | 2006-11-07 | 2010-09-14 | Richard Lienau | Coil sensor memory device and method |
US7773689B2 (en) * | 2007-02-02 | 2010-08-10 | International Business Machines Corporation | Multimodal memory controllers |
-
2010
- 2010-06-09 JP JP2010132354A patent/JP5320345B2/ja active Active
-
2011
- 2011-06-08 US US13/156,049 patent/US8659927B2/en active Active
Also Published As
Publication number | Publication date |
---|---|
US8659927B2 (en) | 2014-02-25 |
JP2011258775A (ja) | 2011-12-22 |
US20110305060A1 (en) | 2011-12-15 |
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