Debug support (DBG) RM0390
1310/1328 RM0390 Rev 4
33.17 TPIU (trace port interface unit)
33.17.1 Introduction
The TPIU acts as a bridge between the on-chip trace data from the ITM and the ETM.
The output data stream encapsulates the trace source ID, that is then captured by a trace
port analyzer (TPA).
The core embeds a simple TPIU, especially designed for low-cost debug (consisting of a
special version of the CoreSight TPIU).
Figure 445. TPIU block diagram
formatter
Trace out
(serializer)
TRACECLKIN
TRACECK
TRACEDATA
[3:0]
TRACESWO
CLK domain
TRACECLKIN domain
External PPB bus
TPIU
TPIU
Asynchronous
FIFO
Asynchronous
FIFO
ETM
ITM
ai17114
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