10.5.4. Trigger inputs and outputs

This section describes the trigger inputs and outputs that are available to the CTI.

Table 10.15 shows the CTI inputs.

Table 10.15. Trigger inputs

CTI inputNameDescription
0 DBGTRIGGER, pulsed Pulsed on entry to debug state
1PMUIRQPMU generated interrupt
2 EXTOUT[0]ETM external output
3 EXTOUT[1] ETM external output
4 EXTOUT[2]ETM external output
5 EXTOUT[3] ETM external output
6 COMMTX Debug communication transmit channel is empty
7COMMRX Debug communication receive channel is full

Table 10.16 shows the CTI outputs.

Table 10.16. Trigger outputs

CTI output Name Description
0 EDBGRQCauses the processor to enter debug state
1 EXTIN[0] ETM external input - ETM event
2EXTIN[1] ETM external input - ETM event
3 EXTIN[2] ETM external input - ETM event
4 EXTIN[3] ETM external input - ETM event
5 --
6 nCTIIRQ CTI interrupt
7 DBGRESTART Causes the processor to exit debug state

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