11.5.5 Trace and comparator features

In ETM Architecture v4, it is implementation defined whether an ETM supports several trace and comparator features.

Trace features

The Cortex®‑R8 processor ETM implements all the ETMv4 trace features.

This means it supports:

  • Data value and data address tracing.
  • Data suppression.
  • Cycle-accurate tracing.
  • Timestamping.

See the ARM® Embedded Trace Macrocell Architecture Specification ETMv4 for descriptions of these features.

Comparator features

The Cortex®‑R8 processor ETM implements data address comparison.

See the ARM® Embedded Trace Macrocell Architecture Specification ETMv4 for a description of data address comparison.

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