Agilex™ 5 ES Device Errata and User Guidelines

ID 825514
Date 12/09/2024
Public
Document Table of Contents

3.1.6. 1030597: Incorrect ETM timestamp value when timestamp and event generation happen on same cycle

Description

When an event packet and timestamp packet are generated on the same cycle, the value of the timestamp packet should be sampled at the time of that event. Because of this erratum, the value of the timestamp is sampled on the previous atom or event packet.

Conditions

  • Timestamping is enabled.
  • Event packet generation is enabled.
  • An event packet and a timestamp packet must be generated on the same cycle.

Impact

The timestamp value might be slightly out of date. In a typical system, atom packets and event packets are frequent relative to the global timestamp signal increment, which means that the amount of errors will be small.

Workaround

There is no workaround for this erratum.

Category

Category C