In addition to these factors, reduce the time needed to arbitrate for the bus.
•
Because arbitration time is overhead, which increases the bus access time, it should be reduced and overlapped with bus transfers whenever possible.
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Bus arbitration schemes can be divided into four broad classes:
1.
Daisy chain arbitration
2.
Centralized, parallel arbitration
3.
Distributed arbitration by self-selection
4.
Distributed arbitration by collision detection.