2.4.5. Trace and Comparator features

In ETM Architecture v3.3, it is implementation-defined whether an ETM supports a number of Trace and Comparator features. This section specifies the implementation of these features on the CoreSight ETM‑R4 macrocell:

Trace features

ETM-R4 implements all of the ETMv3.3 trace features. This means it supports:

  • data value and data address tracing

  • data suppression

  • cycle-accurate tracing.

For descriptions of these features see the Embedded Trace Macrocell Architecture Specification.

Comparator features

ETM-R4 implements data address comparison on the CoreSight ETM‑R4 macrocell. For a description of data address comparison see the Embedded Trace Macrocell Architecture Specification.

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