Intel® Arria® 10 Hard Processor System Technical Reference Manual

ID 683711
Date 8/28/2023
Public
Document Table of Contents

8.2.11.3.2. Regulator Mode

In regulator mode, the QoS generator maintains bandwidth usage to transaction targets at a programmed level, by adjusting urgency, pressure, and hurry.

Use this mode to guarantee a specific bandwidth is available to the master, while preventing it from claiming more bandwidth than you requested.

When the initiator's bandwidth usage exceeds the specified threshold, the QoS downgrades the urgency, pressure, and hurry levels. When bandwidth usage is too low, the QoS increases urgency, pressure and hurry. Software can program the desired bandwidth threshold, the saturation, and maximum and minimum levels for urgency, pressure, and hurry.

Regulator mode controls bandwidth usage more smoothly than limiter mode. This mode is useful in achieving real-time performance.