TW200520383A - Apparatus and method for precisely controlling termination impedance - Google Patents
Apparatus and method for precisely controlling termination impedanceInfo
- Publication number
- TW200520383A TW200520383A TW093126621A TW93126621A TW200520383A TW 200520383 A TW200520383 A TW 200520383A TW 093126621 A TW093126621 A TW 093126621A TW 93126621 A TW93126621 A TW 93126621A TW 200520383 A TW200520383 A TW 200520383A
- Authority
- TW
- Taiwan
- Prior art keywords
- impendence
- termination
- control input
- programmable
- generator
- Prior art date
Links
Landscapes
- Logic Circuits (AREA)
- Networks Using Active Elements (AREA)
- Programmable Controllers (AREA)
Abstract
An impendence controller that controls termination impendence of at least one output based on a reference value including a programmable reference impendence generator, at least one termination logic element, and an impendence matching controller. The programmable reference impendence controlled by a reference impendence generator develops a reference impendence control input. Each termination logic element includes a programmable termination impendence generator coupled to a corresponding output and controlled by termination impendence control input. The impendence matching controller continually adjusts the reference impendence control input to match the reference impendence with the reference value within a predetermined tolerance and generates the termination impendence control input based on the reference impendence control input.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/730,169 US6985008B2 (en) | 2002-12-13 | 2003-12-06 | Apparatus and method for precisely controlling termination impedance |
Publications (2)
Publication Number | Publication Date |
---|---|
TW200520383A true TW200520383A (en) | 2005-06-16 |
TWI324853B TWI324853B (en) | 2010-05-11 |
Family
ID=34592503
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
TW93126621A TWI324853B (en) | 2003-12-06 | 2004-09-03 | Apparatus and method for precisely controlling termination impedance |
Country Status (2)
Country | Link |
---|---|
CN (1) | CN1317825C (en) |
TW (1) | TWI324853B (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100879783B1 (en) * | 2007-06-26 | 2009-01-22 | 주식회사 하이닉스반도체 | On Die Termination Device and Semiconcuctor Memory Device including thereof |
CN102045054B (en) * | 2009-10-13 | 2013-04-24 | 晨星软件研发(深圳)有限公司 | Method and related device for correcting output/input circuit |
CN108231123B (en) * | 2018-02-07 | 2019-03-08 | 长鑫存储技术有限公司 | A kind of calibration method of semiconductor storage unit |
CN112290977B (en) * | 2020-10-22 | 2021-08-31 | 中国大唐集团科学技术研究院有限公司华中电力试验研究院 | Adaptive dynamic adjustment method for communication loop |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6384621B1 (en) * | 2001-02-22 | 2002-05-07 | Cypress Semiconductor Corp. | Programmable transmission line impedance matching circuit |
-
2004
- 2004-09-03 TW TW93126621A patent/TWI324853B/en active
- 2004-09-14 CN CNB2004100747834A patent/CN1317825C/en active Active
Also Published As
Publication number | Publication date |
---|---|
TWI324853B (en) | 2010-05-11 |
CN1581698A (en) | 2005-02-16 |
CN1317825C (en) | 2007-05-23 |
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