15.2. Trigger inputs and outputs
This section describes the trigger inputs and outputs that
are available to the CTI.
Table 15.1 shows
the trigger inputs available to the CTI.
Table 15.1. Trigger inputs
| Trigger input | Name | Clock domain | Description |
|---|
| 0 | DBGTRIGGER | CLK | Processor has entered debug state |
| 1 | !nPMUIRQ | CLK | PMU generated interrupt |
| 2 | EXTOUT[0] | CLK | ETM external output |
| 3 | EXTOUT[1] | CLK | ETM external output |
| 4 | COMMRX | CLK | Debug communication receive channel is full |
| 5 | COMMTX | CLK | Debug communication transmit channel is empty |
| 6 | TRIGGER | ATCLK | ETM trigger |
Table 15.2 shows
the trigger outputs available to the CTI.
Table 15.2. Trigger outputs
| Trigger Output | Name | Clock domain | Edge detection enable | Description |
|---|
| 0 | EDBGRQ | CLK | - | Causes the processor to enter debug state. |
| 1 | EXTIN[0] | CLK | ASICCTL[0] | ETM external input. |
| 2 | EXTIN[1] | CLK | ASICCTL[1] | ETM external input. |
| 3 | EXTIN[2] | CLK | ASICCTL[2] | ETM external input. |
| 4 | EXTIN[3] | CLK | ASICCTL[3] | ETM external input. |
| 5 | PMUEXTIN[0] | CLK | ASICCTL[4] | PMU CTI event. This input can be selected by the
Event Selection Register. See c9, Event Selection
Register for more information on PMU events. |
| 6 | PMUEXTIN[1] | CLK | ASICCTL[5] | PMU CTI event. This input can be selected by the
Event Selection Register. See c9, Event Selection
Register for more information on PMU events. |
| 7 | DBGRESTART | CLK | - | Causes the processor to exit debug state. |
| 8 | !nCTIIRQ | Asynchronous | - | Generates an interrupt if nCTIIRQ is
connected appropriately to the interrupt controller. |
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