Area efficient implementation of the consecutive access counter

Details Area efficient implementation of the consecutive access counter Area efficient implementation of the consecutive access counter

2006-04-13

2009-06-30

Ngo, Ricky (Department: 2416)

Multiplex communications

Channel assignment techniques

Arbitration for access to a channel

C370S252000

Reexamination Certificate

active

07555005

ABSTRACT:
An arbitration unit grants access to a shared resource to one of a plurality of devices. A consecutive access register corresponds to each device. A consecutive access counter is operable to load data stored in a selectable consecutive access register and count down each operating cycle. An arbitration control unit selects one device for access to the shared resource from among all currently requesting access. Upon selection, the consecutive access counter is loaded from the corresponding consecutive access register. Access is re-arbitrated upon count down to zero. Time out registers and corresponding time out counters for each device permit advance to a higher priority after a time out following an ungranted request.

REFERENCES:
patent: 5758075 (1998-05-01), Graziano et al.
patent: 6076157 (2000-06-01), Borkenhagen et al.
patent: 7062582 (2006-06-01), Chowdhuri

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