TW200520383A - Apparatus and method for precisely controlling termination impedance - Google Patents

Apparatus and method for precisely controlling termination impedance

Info

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
Application number
TW093126621A
Other languages
Chinese (zh)
Other versions
TWI324853B (en
Inventor
James R Lundberg
Original Assignee
Ip First Llc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from US10/730,169 external-priority patent/US6985008B2/en
Application filed by Ip First Llc filed Critical Ip First Llc
Publication of TW200520383A publication Critical patent/TW200520383A/en
Application granted granted Critical
Publication of TWI324853B publication Critical patent/TWI324853B/en

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  • 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.
TW93126621A 2003-12-06 2004-09-03 Apparatus and method for precisely controlling termination impedance TWI324853B (en)

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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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

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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