Multimode resource arbiter providing round robin arbitration or

Details Multimode resource arbiter providing round robin arbitration or Multimode resource arbiter providing round robin arbitration or

1989-12-22

1991-12-10

Fleming, Michael R.

Boots, shoes, and leggings

3642426, 364240, 36424292, 3642513, 364DIG1, 3408255, G06F 1314, G06F 1300

Patent

active

050723634

ABSTRACT:
A multimode shared resource arbiter circuit is provided by a programmable array logic module programmed to provide round robin arbitration, or round robin/modified priority arbitration between requests for access to a shared resource, such as a data bus, which is normally provided with only priority arbitration between different access requests. The programmable array logic module is programmed to provide a first option for a round robin arbitration system between different bus access requests, and a second option to put one bus request on a priority basis while other bus requests are round robin arbitrated. The programmable array logic module is programmed to provide a multistate counter cyclically driven between multiple count states by a clock, and each count state having associated therewith a particular request for access to the bus, and if a particular request for access to the bus becomes active while the counter is at its associated count state, the active request is granted and passed as an output, and the counter is frozen at the associated count state, and when the active request is released, the counter resumes being cyclically driven between its multiple count states to resume further round robin arbitration between access requests. The arbiter circuit of the present invention is also applicable to other shared resources such as a shared main storage, a shared RAM memory, etc.

REFERENCES:
patent: 4172284 (1979-10-01), Heinrich et al.
patent: 4232294 (1980-11-01), Burke et al.
patent: 4257095 (1981-03-01), Nadir
patent: 4458314 (1984-07-01), Grimes
patent: 4470114 (1984-09-01), Gerhold
patent: 4499538 (1985-02-01), Finger et al.
patent: 4560985 (1985-12-01), Strecker et al.
patent: 4633394 (1986-12-01), Georgion et al.
patent: 4641266 (1987-02-01), Walsh
patent: 4648029 (1987-03-01), Cooper et al.
patent: 4760515 (1988-07-01), Malmquist et al.
patent: 4787033 (1988-11-01), Bomba et al.
patent: 4814974 (1989-03-01), Narayanan et al.

Affiliated with

Also associated with

Rating

Multimode resource arbiter providing round robin arbitration or does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Multimode resource arbiter providing round robin arbitration or , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Multimode resource arbiter providing round robin arbitration or will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1045397