Method and apparatus for terminating a bus at a device interface

Details Method and apparatus for terminating a bus at a device interface Method and apparatus for terminating a bus at a device interface

1997-07-28

2000-07-18

Sheikh, Ayaz R.

Electrical computers and digital data processing systems: input/

Intrasystem connection

710126, G06F 1300

Patent

active

060921315

ABSTRACT:
A method for automatically terminating a bus that is dependent upon whether devices are coupled to ports of a device interface is disclosed. The method includes the steps of (a) generating a first sensing voltage having a voltage level equal to one of at least three levels; (b) generating a first control voltage having a fourth level when the voltage level of the first sensing voltage has a first predetermined logical relationship to a first reference voltage; and (c) terminating a first plurality of lines of the bus at the device interface when the first control voltage is equal to the fourth level. An apparatus suitable for implementing the above method is also disclosed.

REFERENCES:
patent: 4220876 (1980-09-01), Ray
patent: 4367525 (1983-01-01), Brown et al.
patent: 4748426 (1988-05-01), Stewart
patent: 4831283 (1989-05-01), Newton
patent: 4920339 (1990-04-01), Friend et al.
patent: 4965723 (1990-10-01), Kirk et al.
patent: 5029284 (1991-07-01), Feldaumer et al.
patent: 5099137 (1992-03-01), Lattin, Jr.
patent: 5101481 (1992-03-01), Anger et al.
patent: 5120909 (1992-06-01), Kutz et al.
patent: 5157771 (1992-10-01), Losi et al.
patent: 5191581 (1993-03-01), Woodbury et al.
patent: 5204669 (1993-04-01), Dorfe et al.
patent: 5239559 (1993-08-01), Brach et al.
patent: 5239658 (1993-08-01), Yamamura et al.
patent: 5265038 (1993-11-01), Kowk
patent: 5313105 (1994-05-01), Samela et al.
patent: 5313595 (1994-05-01), Lewis et al.
patent: 5327114 (1994-07-01), Straate et al.
patent: 5338979 (1994-08-01), Mammano et al.
patent: 5367647 (1994-11-01), Coulson et al.
patent: 5382841 (1995-01-01), Feldbaumer
patent: 5410141 (1995-04-01), Koenck et al.
patent: 5422580 (1995-06-01), Mandel et al.
patent: 5434516 (1995-07-01), Kosco
patent: 5450425 (1995-09-01), Gunn et al.
patent: 5455926 (1995-10-01), Keele et al.
patent: 5465042 (1995-11-01), Samela et al.
patent: 5467453 (1995-11-01), Kocis
patent: 5469554 (1995-11-01), Tucker et al.
patent: 5473264 (1995-12-01), Mader et al.
patent: 5495584 (1996-02-01), Holman, Jr. et al.
patent: 5510701 (1996-04-01), Samela et al.
patent: 5511229 (1996-04-01), Tsujimoto
patent: 5546017 (1996-08-01), Vitunic
patent: 5553250 (1996-09-01), Miyagawa et al.
patent: 5555510 (1996-09-01), Verseput et al.
patent: 5564024 (1996-10-01), Pemberton
patent: 5568046 (1996-10-01), Samela et al.
patent: 5574946 (1996-11-01), Sala
patent: 5583448 (1996-12-01), Corder et al.
patent: 5585741 (1996-12-01), Jordan
patent: 5586271 (1996-12-01), Parrett
patent: 5613074 (1997-03-01), Galloway
patent: 5635853 (1997-06-01), Kikinis
patent: 5664221 (1997-09-01), Amberg et al.
patent: 5680537 (1997-10-01), Byers et al.
patent: 5680555 (1997-10-01), Bodo et al.
patent: 5715409 (1998-02-01), Bucher et al.
patent: 5751977 (1998-05-01), Alexander
patent: 5764925 (1998-06-01), Noonan
patent: 5768621 (1998-06-01), Young
patent: 5781028 (1998-07-01), Decuir et al.
"Automatic Small Computer System Interface Termination Circuit for Narrow/WIDE Devices on Wide Bus" IBM Technical Disclosure Bulletin. vol. 40, No. 4, Apr., 1997, New York, US pp. 79-82, XP000728275.
"BI-0316 Mass Storage Module" Dec. 6, 1996, Brand Innovators B.V. X0002071927, Available from Internet URL: http//www.brandinnovators.com/manual/bi0316/book)33.htm.
VLSI and Computer Peripherals, May 8-12, 1989; VLSI Based Tools for Monitoring Bus Communication Channels; F. Gregoretti et al; 1989 IEEE; p. 4-81-84.

Affiliated with

Also associated with

Rating

Method and apparatus for terminating a bus at a device interface does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method and apparatus for terminating a bus at a device interface, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for terminating a bus at a device interface will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2048566