LM3S9D90 Datasheet, PDF (665/1310 Pages) Texas Instruments – ARM and Thumb are registered trademarks and Cortex is a trademark

Stellaris^® LM3S9D90 Microcontroller
Bit/Field
7:4
Name
EM1
Type
R/W
Reset
0x0
Description
SS1 Trigger Select
This field selects the trigger source for Sample Sequencer 1.
The valid configurations for this field are:
Value
0x0
0x1
0x2
0x3
0x4
Event
Processor (default)
The trigger is initiated by setting the SSn bit in the ADCPSSI
register.
Analog Comparator 0
This trigger is configured by the Analog Comparator Control
0 (ACCTL0) register (page 1151).
Analog Comparator 1
This trigger is configured by the Analog Comparator Control
1 (ACCTL1) register (page 1151).
Analog Comparator 2
This trigger is configured by the Analog Comparator Control
2 (ACCTL2) register (page 1151).
External (GPIO PB4)
This trigger is connected to the GPIO interrupt for PB4 (see
“ADC Trigger Source” on page 434).
Note:
PB4 can be used to trigger the ADC. However, the
PB4/AIN10 pin cannot be used as both a GPIO
and an analog input.
0x5
Timer
In addition, the trigger must be enabled with the TnOTE bit
in the GPTMCTL register (page 579).
0x6
reserved
0x7
reserved
0x8
reserved
0x9
reserved
0xA-0xE reserved
0xF
Always (continuously sample)
January 22, 2012
665
Texas Instruments-Production Data