Electronic digital logic circuitry – Interface – Current driving
Patent
1995-12-28
1998-04-07
Westin, Edward P.
Electronic digital logic circuitry
Interface
Current driving
326 90, 395851, H03K 190175
Patent
active
057368708
ABSTRACT:
A bidirectional bus circuit according to the present invention typically includes: (a) a first and a second bus line portion for carrying a bidirectional bus signal, where the first bus line portion has a first and a second end, and the second bus line portion has a third and a fourth end; (b) a bus direction sense line for carrying a bus direction signal; (c) a sensing circuit coupled to the sense line for detecting the bus direction signal; and (d) a driving circuit coupled to the sensing circuit and coupled between the second end of the first bus line portion and the third end of the second bus line portion for driving the first and second bus line portions. According to one embodiment of the present invention, the sensing circuit may include a cross coupled NAND gate latch or a cross coupled NOR gate latch. The driving circuit may include a first buffer circuit for driving the first bus line portion and a second buffer circuit for driving the second bus line portion. At a given time, only one of the buffer circuits is enabled. The sensing circuit may be coupled to other driving circuits that are in series with the driving circuit mentioned above. Also, the sensing circuit may be coupled to other driving circuits that are in parallel with the driving circuit mentioned above as long as the bus signals along their respective bus line portions travel in the same direction at a given time.
REFERENCES:
patent: 4283760 (1981-08-01), Kita et al.
patent: 4945264 (1990-07-01), Lee
patent: 4982115 (1991-01-01), Lee
patent: 5214330 (1993-05-01), Okazaki
patent: 5248908 (1993-09-01), Kimura
patent: 5274769 (1993-12-01), Ishida
patent: 5432465 (1995-07-01), Hsi-Jung
Greason Jeffrey K.
Kolousek James P.
Driscoll Benjamin D.
Intel Corporation
Westin Edward P.
LandOfFree
Method and apparatus for bi-directional bus 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 Method and apparatus for bi-directional bus driver, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for bi-directional bus driver will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-16244