35.3.3 Events
An op amp must be in EVENT_ENABLED or SW_ENABLED_WITH_EVENTS mode to generate
events and respond to incoming events. To select EVENT_ENABLED mode for OPn, the EVENTEN bit
in OPnCTRLA must be written to ‘1’, and the ALWAYSON bit must be written to
‘0’. To select SW_ENABLED_WITH_EVENTS mode for OPn, the EVENTEN bit in
OPnCTRLA must be written to ‘1’, and the ALWAYSON bit must be written to
‘1’.
OPn can generate the event as described in the table below.
| Generator Name | Description | Event Type | Generating Clock Domain | Length of Event | |
|---|---|---|---|---|---|
| Peripheral | Event | ||||
| OPAMP | READYn | OPn is ready | Pulse | CLK_PER | One CLK_PER period |
The table below describes the event users for OPn and their associated
functionality.
| User Name | Description | Input Detection | Async/Sync | |
|---|---|---|---|---|
| Peripheral | Input | |||
| OPAMP | ENABLEn | Enable OPn | Edge | Async |
| OPAMP | DISABLEn | Disable OPn | Edge | Sync |
| OPAMP | DUMPn | Dump OPn VOUT to VINN | Level | Sync |
| OPAMP | DRIVEn | Enable OPn output driver in NORMAL mode | Level | Sync |
Refer to the Event System (EVSYS) section for more details regarding event types and Event System configuration.