Method and apparatus for arbitration and fairness on a full-duplex bus using dual phases
First Claim
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1. A network of nodes sending arbitration requests to a BOSS node, at least one of said nodes containing instructions which, when executed by a computer, provide an arbitration fairness protocol in said network, by performing the acts of:
- providing an first arbitration phase, a second arbitration phase, and an arbitration advancing means;
sending an arbitration reset command for the first arbitration phase by the BOSS node;
granting arbitration by the BOSS node of arbitration requests made by the plurality of nodes for said first arbitration phase during said second arbitration phase;
granting arbitration by the BOSS node of arbitration requests made by the plurality of nodes for said first arbitration phase during said first arbitration phase;
advancing to said second arbitration phase according to said advancing means;
sending an arbitration reset command for said second arbitration phase by the BOSS node;
granting arbitration by the BOSS node of arbitration requests made by the plurality of nodes for said second arbitration phase during said first arbitration phase; and
granting arbitration by the BOSS node of arbitration requests made by the plurality of nodes for said second arbitration phase during said second arbitration phase.
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Abstract
A method and apparatus for arbitrating on a high performance serial bus is disclosed. The invention provides for a plurality of arbitration phases and an arbitration advancing means.
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Citations
6 Claims
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1. A network of nodes sending arbitration requests to a BOSS node, at least one of said nodes containing instructions which, when executed by a computer, provide an arbitration fairness protocol in said network, by performing the acts of:
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providing an first arbitration phase, a second arbitration phase, and an arbitration advancing means;
sending an arbitration reset command for the first arbitration phase by the BOSS node;
granting arbitration by the BOSS node of arbitration requests made by the plurality of nodes for said first arbitration phase during said second arbitration phase;
granting arbitration by the BOSS node of arbitration requests made by the plurality of nodes for said first arbitration phase during said first arbitration phase;
advancing to said second arbitration phase according to said advancing means;
sending an arbitration reset command for said second arbitration phase by the BOSS node;
granting arbitration by the BOSS node of arbitration requests made by the plurality of nodes for said second arbitration phase during said first arbitration phase; and
granting arbitration by the BOSS node of arbitration requests made by the plurality of nodes for said second arbitration phase during said second arbitration phase. - View Dependent Claims (2, 3, 4, 5, 6)
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Specification