LM3S1G21 Datasheet, PDF (634/955 Pages) Texas Instruments – Stellaris® LM3S1G21 Microcontroller

Analog-to-Digital Converter (ADC)
Bit/Field
11:8
Name
EM2
Type
R/W
Reset
0x0
Description
SS2 Trigger Select
This field selects the trigger source for Sample Sequencer 2.
The valid configurations for this field are:
Value Event
0x0
Processor (default)
The trigger is initiated by setting the SSn bit in the ADCPSSI
register.
0x1
Analog Comparator 0
This trigger is configured by the Analog Comparator Control
0 (ACCTL0) register (page 833).
0x2
Analog Comparator 1
This trigger is configured by the Analog Comparator Control
1 (ACCTL1) register (page 833).
0x3
reserved
0x4
External (GPIO PB4)
This trigger is connected to the GPIO interrupt for PB4 (see
“ADC Trigger Source” on page 407).
0x5
Timer
In addition, the trigger must be enabled with the TnOTE bit
in the GPTMCTL register (page 552).
0x6
reserved
0x7
reserved
0x8
reserved
0x9
reserved
0xA-0xE reserved
0xF
Always (continuously sample)
634
January 22, 2012
Texas Instruments-Production Data