LM3S317 Datasheet, PDF (235/379 Pages) List of Unclassifed Manufacturers – Microcontroller

LM3S317 Data Sheet
Register 27: ADC Test Mode Loopback (ADCTMLB), offset 0x100
This register provides loopback operation within the digital logic of the ADC, which can be useful in
debugging software without having to provide actual analog stimulus. This test mode is entered by
writing a value of 0x00000001 to this register. When data is read from the FIFO in loopback mode,
the read-only portion of this register is returned.
ADC Test Mode Loopback (ADCTMLB): Read
Offset 0x100
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
reserved
CNT
CONT DIFF TS
MUX
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
ADC Test Mode Loopback (ADCTMLB):Write
Offset 0x100
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
reserved
LB
Type
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
WO
Reset
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Bit/Field
Name
Read-Only Register
31:10
reserved
9:6
CNT
5
CONT
4
DIFF
3
TS
2:0
MUX
Type
Reset Description
RO
0
Reserved bits return an indeterminate value, and should never
be changed.
RO
0
Continuous sample counter that is initialized to 0 and counts
each sample as it processed. This helps provide a unique value
for the data received.
RO
0
When set, indicates that this is a continuation sample. For
example if two sequencers were to run back-to-back, this
indicates that the controller kept continuously sampling at full
rate.
RO
0
When set, indicates that this was to be a differential sample.
RO
0
When set, indicates that this was to be a temperature sensor
sample.
RO
0
Indicate which analog input was to be sampled.
May 4, 2007
235
Preliminary