2.1.3. PTM interface

The Cortex-A9 processor optionally implements a Program Trace Macrocell (PTM) interface, which is compliant with the Program Flow Trace (PFT) instruction-only architecture protocol. Waypoints, changes in the program flow or events such as changes in context ID, are output to enable the trace to be correlated with the code image. See Program Flow Trace and the Program Trace Macrocell interface.

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