Fair hierarchical arbiter

Details Fair hierarchical arbiter Fair hierarchical arbiter

2007-11-27

2007-11-27

Lee, Christopher E. (Department: 2111)

Electrical computers and digital data processing systems: input/

Access arbitrating

Hierarchical or multilevel arbitrating

C710S111000, C710S120000, C370S447000

Reexamination Certificate

active

11239615

ABSTRACT:
A fair hierarchical arbiter comprises a number of arbitration mechanisms, each arbitration mechanism forwarding winning requests from requestors in round robin order by requestor. In addition to the winning requests, each arbitration mechanism forwards valid request bits, the valid request bits providing information about which requestor originated a current winning request, and, in some embodiments, about how many separate requesters are arbitrated by that particular arbitration mechanism. The fair hierarchical arbiter outputs requests from the total set of separate requestors in a round robin order.

REFERENCES:
patent: 5710549 (1998-01-01), Horst et al.
patent: 6487213 (2002-11-01), Chao
patent: 6990541 (2006-01-01), Clayton
patent: 7024506 (2006-04-01), Harrington
patent: 7051135 (2006-05-01), Zhu
patent: 2004/0190554 (2004-09-01), Galloway
patent: 2006/0095634 (2006-05-01), Meyer
patent: 2007/0011382 (2007-01-01), Roever

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