Datasheet

32142D–06/2013

ATUC64/128/256L3/4U

29.9.4 Trigger Register

Name:

TRGR

Access Type: Read/Write

Offset: 0x0C

Reset Value: 0x00000000

• TRGPER: Trigger Period

Effective only if TRGMOD defines a Periodic Trigger.

Defines the periodic trigger period, with the following equations:

Trigger Period = TRGPER *T

CLK_ADC

• TRGMOD: Trigger Mode

31 30 29 28 27 26 25 24

TRGPER[15:8]

23 22 21 20 19 18 17 16

TRGPER[7:0]

15 14 13 12 11 10 9 8

--------

76543210

----- TRGMOD

Table 29-4. Trigger Modes

TRGMOD Selected Trigger Mode

0 0 0 No trigger, only software trigger can start conversions

0 0 1 External Trigger Rising Edge

0 1 0 External Trigger Falling Edge

0 1 1 External Trigger Any Edge

100

Pen Detect Trigger (shall be selected only if PENDET is set and TSAMOD = Touch

Screen mode)

1 0 1 Periodic Trigger (TRGPER shall be initiated appropriately)

1 1 0 Continuous Mode

1 1 1 Peripheral Event Trigger