Atmel Evaluation Kit AT91SAM9G25-EK AT91SAM9G25-EK Data Sheet

926

SAM9G25 [DATASHEET]

11032D–ATARM–10-Mar-2014

ADC_TRGR

0xF804C0C0

Read-write

Effective only if TRGMOD defines a Periodic Trigger.

Defines the periodic trigger period, with the following equation:

Trigger Period = (TRGPER+1) /ADCCLK

The minimum time between 2 consecutive trigger events must be strictly greater than the duration time of the longest conversion 
sequence according to configuration of registers ADC_MR, ADC_CHSR, ADC_SEQR1, ADC_SEQR2 .

31

30

29

28

27

26

25

24

TRGPER

23

22

21

20

19

18

17

16

TRGPER

15

14

13

12

11

10

9

8

–

–

–

–

–

–

–

–

7

6

5

4

3

2

1

0

–

–

–

–

–

TRGMOD

0

NO_TRIGGER

No trigger, only software trigger can start conversions

1

EXT_TRIG_RISE

External Trigger Rising Edge

2

EXT_TRIG_FALL

External Trigger Falling Edge

3

EXT_TRIG_ANY

External Trigger Any Edge

4

–

Reserved

5

PERIOD_TRIG

Periodic Trigger (TRGPER shall be initiated appropriately)

6

CONTINUOUS

Continuous Mode

7

–

Reserved