Electrical computers and digital data processing systems: input/ – Intrasystem connection – Bus access regulation
Reexamination Certificate
2006-06-13
2006-06-13
Auve, Glenn A. (Department: 2112)
Electrical computers and digital data processing systems: input/
Intrasystem connection
Bus access regulation
C710S241000, C370S462000
Reexamination Certificate
active
07062582
ABSTRACT:
Various approaches grant access to a shared resource. An arbitration circuit includes request shapers that each receive a request from one of the requestors and assign a respective predetermined priority level and age to each of the requests. An arbiter core receives the requests and grants access to the shared resource to each of the requestors corresponding to the requests. The arbiter core includes a mask circuit that includes a plurality of mask registers each corresponding to a respective one of the priority levels. The age of a respective one of the requests increases when the corresponding one of the requestors is not granted access to the shared resource. The priority level of a respective one of the requests increases according to the age of the respective one of the requests.
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Auve Glenn A.
Lee Christopher E.
Marvell International Ltd.
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