Intel® L- and H-tile Avalon® Memory-mapped+ IP for PCI Express* User Guide

ID 683527
Date 10/19/2021

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Document Table of Contents

3.1.1. Tags

The modules that issue non-posted requests need tags to associate the completions with the requests.

The 256 available tags are split into:
  • 64 tags allocated to the Bursting Slave.
  • 64 tags allocated to the Read Data Mover.

The remaining 128 tags are not used.

Note: The Config Slave module consumes one of these remaining 128 tags when Root Port mode is available.

The tag field of outgoing posted requests is a "don't care" and is set to 0.