11.2.8 Global timestamping

The Cortex®‑R8 processor ETM supports connection to a global timestamp source. This provides a 48-bit or 64-bit timestamp which can be used for coarse-grained profiling, and correlation of trace sources. ARM recommends that the timestamp counter is no slower than 10% of the Cortex‑R8 processor clock.

Note:

Decompression of data trace relies on the presence of a global timestamp count.
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