|Non-Confidential||PDF version||ARM 100400_0001_03_en|
|Home > Embedded Trace Macrocell > Functional description > 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.