41.6.5 DMA, Interrupts and Events

Table 41-8. Module Requests for TCC
Condition	Interrupt request	Event output	Event input	DMA request	DMA request is cleared
Overflow/Underflow	Yes	Yes	—	Yes⁽¹⁾	On DMA acknowledge
Channel Compare Match or Capture	Yes	Yes	Yes⁽²⁾	Yes⁽³⁾	For circular buffering: on DMA acknowledge For capture channel: when CCx register is read
Retrigger	Yes	Yes	—	—	—
Count	Yes	Yes	—	—	—
Capture Overflow Error	Yes	—	—	—	—
Debug Fault State	Yes	—	—	—	—
Recoverable Faults	Yes	—	—	—	—
Non-Recoverable Faults	Yes	—	—	—	—
TCCx Event 0 input	—	—	Yes⁽⁴⁾	—	—
TCCx Event 1 input	—	—	Yes⁽⁵⁾	—	—

Note:

DMA request set on Overflow, Underflow or Re-trigger conditions.
Can perform capture or generate recoverable fault on an event input.
In Capture or Circular modes.
On event input, either action can be executed:
- Re-trigger counter
- Control counter direction
- Stop the counter
- Decrement the counter
- Perform period and pulse width capture
- Generate non-recoverable fault
On event input, either action can be executed:
- Re-trigger counter
- Increment or decrement counter depending on direction
- Start the counter
- Increment or decrement counter based on direction
- Increment counter regardless of direction
- Generate non-recoverable fault

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