21.3.4 Events
| Generator Name | Description | Event Type | Generating Clock Domain | Length of Event | |
|---|---|---|---|---|---|
| Peripheral | Event | ||||
| TCBn | CAPT | CAPT flag set | Pulse | CLK_PER | One CLK_PER period |
The conditions for generating the CAPT event are identical to those that will raise the corresponding interrupt flag in the Timer/Counter Interrupt Flags (TCBn.INTFLAGS) register. Refer to the Event System section for more details regarding event users and Event System configuration.
| User Name | Description | Input Detection | Async/Sync | |
|---|---|---|---|---|
| Peripheral | Input | |||
| TCBn | CAPT | Time-Out Check Count mode | Edge | Sync |
| Input Capture on Event Count mode | ||||
| Input Capture Frequency Measurement Count mode | ||||
| Input Capture Pulse-Width Measurement Count mode | ||||
| Input Capture Frequency and Pulse-Width Measurement Count mode | ||||
| Single-Shot Count mode | Both | |||
If the Capture Event Input Enable (CAPTEI) bit in the Event Control (TCBn.EVCTRL) register
is written to ‘1’, incoming events will result in an event action as
defined by the Event Edge (EDGE) bit in the Event Control (TCBn.EVCTRL) register and the
Timer Mode (CNTMODE) bit field in Control B (TCBn.CTRLB) register. The event needs to last
for at least one CLK_PER cycle to be recognized.
If the Asynchronous mode is enabled for Single-Shot mode, the event is edge-triggered and will capture changes on the event input shorter than one system clock cycle.