发明名称 |
High-speed starvation-free arbiter system, rotating-priority arbiter, and two stage arbitration method |
摘要 |
A two-stage arbiter system comprises a first-stage arbiter to grant a request to one of a plurality of requestors in accordance with a first arbitration scheme and a second-stage arbiter to grant one of the remaining requests in accordance with a second arbitration scheme. The first arbitration scheme may be a fast arbitration scheme such as a fixed-priority scheme, and the second arbitration scheme may be a rotating priority-based arbitration scheme or a least-recently-granted arbitration scheme. The first-stage arbiter may operate in a first pipelined stage, and the second-stage arbiter may operate in a second pipelined stage. Two-stage arbitration may help improve access of lower-priority requestors in a pipelined system. In one embodiment, a rotating-priority arbitrator includes a pseudo-random number generator to generate an amount for rotating priorities prior to arbitration. The rotating-priority arbiter may use either a counter or linear-feedback shift register to rotate priorities of requests.
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申请公布号 |
US7120714(B2) |
申请公布日期 |
2006.10.10 |
申请号 |
US20030445533 |
申请日期 |
2003.05.27 |
申请人 |
INTEL CORPORATION |
发明人 |
O'CONNOR DENNIS M.;MORROW MICHAEL W.;STRAZDUS STEPHEN |
分类号 |
G06F13/14;G06F13/00;G06F13/36;G06F13/362;G06F13/364 |
主分类号 |
G06F13/14 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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