Arbitration ring with automatic sizing for a partially populated switching network
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United States of America Patent
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Mar 16, 1999
Grant Date -
N/A
app pub date -
Nov 21, 1996
filing date -
Nov 21, 1996
priority date (Note) -
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Abstract
Access to a switching network of an ATM (Asynchronous Transfer Mode) switch is scheduled with a reservation ring that automatically determines the number of channels populating the switching network during a switch cycle. The reservation ring is a distributed arbiter that resolves conflicts arising among a plurality of input channels for access to a plurality of output channels of the switching network. Each input channel populating the switching network is coupled to an arbitration unit of the reservation ring. The arbitration units on the ring determine when an arbitration cycle is complete for each of the arbitration units populating the ring. This enables the number of channels populating the switching network to increase or decrease without having to reconfigure the reservation ring.
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