Coupled synchronous-asychronous bus structure for transferring d

Details Coupled synchronous-asychronous bus structure for transferring d Coupled synchronous-asychronous bus structure for transferring d

1995-06-07

1996-04-16

Bowler, Alyssa H.

395800, 395410, 395427, G06F 1338

Patent

active

055091245

ABSTRACT:
In a data processing system, an input output bus unit (IOBU) is connected to one end of an input output interface controller (IOIC) via an asynchronous bus. The other end of the IOIC is connected to a storage controller (SC) and an input output interface unit (IOIU) via a synchronous bus. The SC and IOIU are connected to a memory unit and an instruction processing unit. The asynchronous bus, which is comprised of three sub-buses and a control bus, conducts signals between the IOIC and an IOBU in an asynchronous "handshaking" manner. The synchronous bus, which is comprised of two sub-buses and a control bus, conducts signals between the IOIC and the SC/IOIU in an synchronous manner. The IOIC, interconnected between the synchronous bus and asynchronous bus, functions as a buffer between the faster synchronous bus and the slower asynchronous bus. Various operations are performed between an IOBU and the memory unit via the asynchronous bus, IOIC, synchronous bus, and SC/IOIU, such as a unit operation, a storage operation, and a message acceptance operation.

REFERENCES:
patent: 3680045 (1972-07-01), Meidan
patent: 3886524 (1975-05-01), Appelt
patent: 3997896 (1976-12-01), Cassarino, Jr. et al.
patent: 4070648 (1978-01-01), Mergenthaler et al.
patent: 4534011 (1985-08-01), Andrews et al.
patent: 4570220 (1986-02-01), Tetrick et al.
patent: 4631667 (1986-12-01), Zulian et al.
patent: 4658353 (1987-04-01), Whittaker et al.
patent: 4661902 (1987-04-01), Hochsprung et al.
patent: 4667323 (1987-05-01), Engdahl et al.
patent: 4779089 (1988-10-01), Theus
patent: 4807109 (1989-02-01), Farrell et al.
patent: 4807116 (1989-02-01), Katzman et al.
patent: 4908749 (1990-03-01), Marshall et al.
patent: 5007013 (1991-04-01), Elms
patent: 5101478 (1992-03-01), Fu et al.
patent: 5146572 (1992-09-01), Bailey et al.

Affiliated with

Also associated with

Rating

Coupled synchronous-asychronous bus structure for transferring d does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Coupled synchronous-asychronous bus structure for transferring d, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Coupled synchronous-asychronous bus structure for transferring d will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-332132