40.6.5 DMA, Interrupts, and Events

Table 40-9. 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
Cycle	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 Retrigger 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:
- retrigger 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
On event input, either action can be executed:
- retrigger counter
- control counter direction
- stop the counter
- decrement the counter
- perform period and pulse width capture
- generate non-recoverable fault

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