2.3.4. Arbitration

You can program the arbitration algorithm for all arbitration nodes within the infrastructure.

At the entry point to the infrastructure, all transactions are allocated a local QoS that you can configure to be:

The arbitration of the transaction throughout the infrastructure uses this QoS. See Chapter 3 Programmers Model.

At any arbitration node, a fixed priority exists for transactions with a different QoS. The highest value has the highest priority. If there are coincident transactions at an arbitration node with the same QoS that require arbitration, then the Network uses a Least Recently Used (LRU) algorithm.

Copyright © 2006-2009 ARM. All rights reserved.ARM DDI 0397F