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There are two configurations of the TPIU:
A configuration that supports ITM debug trace.
A configuration that supports both ITM and ETM debug trace.
If your implementation requires no trace support then the TPIU might not be present.
If your Cortex-M3 system uses the optional ETM component, the TPIU configuration supports both ITM and ETM debug trace. See Chapter 10 Embedded Trace Macrocell.
| Copyright © 2005-2008, 2010 ARM Limited. All rights reserved. | ARM DDI 0337I |
| Non-Confidential | |
| PDF version | |
| Home > Trace Port Interface Unit > TPIU functional description |