LM3S317 Datasheet, PDF (218/379 Pages) List of Unclassifed Manufacturers – Microcontroller

Analog-to-Digital Converter (ADC)
Register 6: ADC Event Multiplexer Select (ADCEMUX), offset 0x014
The ADCEMUX selects the event (trigger) that initiates sampling for each Sample Sequencer.
Each Sample Sequencer can be configured with a unique trigger source.
ADC Event Multiplexer Select (ADCEMUX)
Offset 0x014
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
reserved
Type
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
Reset
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
EM3
EM2
EM1
EM0
Type R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Reset
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Bit/Field
31:16
15:12
Name
reserved
EM3
Type
RO
R/W
Reset
0
0
Description
Reserved bits return an indeterminate value, and should
never be changed.
This field selects the trigger source for Sample Sequencer 3.
The valid configurations for this field are:
EM Binary Value Event
0000
Controller (default)
0001
Analog Comparator 0
0010
Reserved
0011
Reserved
0100
External (GPIO PB4)
0101
Timer
0110
PWM0
0111
PWM1
1000
PWM2
1001-1110
Reserved
1111
Always (continuously sample)
11:8
EM2
R/W
0
This field selects the trigger source for Sample Sequencer 2.
The encodings are the same as those for EM3.
7:4
EM1
R/W
0
This field selects the trigger source for Sample Sequencer 1.
The encodings are the same as those for EM3.
3:0
EM0
R/W
0
This field selects the trigger source for Sample Sequencer 0.
The encodings are the same as those for EM3.
218
May 4, 2007
Preliminary