XC886/888CLM
Analog-to-Digital Converter
User’s Manual
16-27
V1.3, 2010-02
ADC, V 1.0
16.4.9
External Trigger Inputs
The sequential and parallel request sources has one request trigger input REQTRx
(x = 0 - 1) each, through which a conversion request can be started. The input to
REQTRx is selected from eight external trigger inputs (ETRx0 to ETRx7) via a
multiplexer depending on bit field ETRSELx. It is possible to bypass the synchronization
stages for external trigger requests that come synchronous to ADC. This selection is
done via bit SYNENx.
Refer to
for description of the external trigger control registers.
Figure 16-16 External Trigger Input
The external trigger inputs to the ADC module are driven by events occuring in the CCU6
module. See
.
Table 16-2
External Trigger Input Source
External Trigger Input
CCU6 Event
ETRx0
T13 period-match
ETRx1
T13 compare-match
ETRx2
T12 period-match
ETRx3
T12 compare-match for channel 0
ETRx4
T12 compare-match for channel 1
ETRx5
T12 compare-match for channel 2
ETRx6
Shadow transfer event for multi-channel mode
ETRx7
Correct hall event for multi-channel mode
...
ETRx0
ETRx1
ETRx7
ETRSELx
REQTRx
rising
edge
detect
SYNENx
syn. stages
rw
rw
*