Fast ethernet and ethernet driver

Details Fast ethernet and ethernet driver Fast ethernet and ethernet driver

2005-07-19

2005-07-19

Lam, Tuan T. (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Current driver

C327S170000, C327S109000, C327S110000, C326S082000, C326S086000

Reexamination Certificate

active

06919742

ABSTRACT:
A driver circuit for driving a line in a network comprises first driving means for driving the line, second driving means for driving the line, and switching means for switching between the first and second driving means. A method for providing multi-mode driver capability is also described. The method comprises the steps of providing a line driver circuit including both a current source and a voltage source, selecting a first or second mode of operation, operating the line driver circuit in a first configuration when the first mode of operation is selected, and operating the line driver circuit in a second configuration when the second mode of operation is selected.

REFERENCES:
patent: 3843834 (1974-10-01), Burke
patent: 4384363 (1983-05-01), Lipcon
patent: 5309036 (1994-05-01), Yang et al.
patent: 5379209 (1995-01-01), Goff
patent: 5485488 (1996-01-01), Van Brunt et al.
patent: 5747893 (1998-05-01), Bennett et al.
patent: 5835239 (1998-11-01), Kim
patent: 6121800 (2000-09-01), Leighton et al.
patent: 6323686 (2001-11-01), Bisson et al.

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