Logic line driver system for providing an optimal driver...

Details Logic line driver system for providing an optimal driver... Logic line driver system for providing an optimal driver...

2007-05-01

2007-05-01

Le, Don (Department: 2819)

Electronic digital logic circuitry

Interface

Current driving

C326S087000

Reexamination Certificate

active

11055834

ABSTRACT:
A line driver for off-chip communication comprises multiple parallel stages each with separate inputs. The parallel stages each have a controlled impedance when driving the line driver output node to a logic zero or a logic one. A line driver controller is used to select what combination of driver stages are used to drive the output node based on whether the output node is transitioning between logic state or is remaining static. During power-up, a test program tries different combinations of driver stages for particular symbol patterns and determines what is the optimal ratio between line driver resistance for the dynamic and static cases and stores the optimum combination. The data stream feeding the line driver is sampled in real time to determine the transition states and selects the optimal number of driver stages for each case.

REFERENCES:
patent: 5739707 (1998-04-01), Barraclough
patent: 6127862 (2000-10-01), Kawasumi
patent: 6624662 (2003-09-01), Volk
patent: 6642742 (2003-11-01), Loyer
patent: 6704818 (2004-03-01), Martin et al.
patent: 6794909 (2004-09-01), Urakami et al.
patent: 6909305 (2005-06-01), Li et al.
patent: 6980018 (2005-12-01), Ngo et al.

Affiliated with

Also associated with

Rating

Logic line driver system for providing an optimal driver... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Logic line driver system for providing an optimal driver..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Logic line driver system for providing an optimal driver... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3812452