LM3S5G36 Datasheet, PDF (225/1068 Pages) Texas Instruments – Stellaris® LM3S5G36 Microcontroller

Stellaris^® LM3S5G36 Microcontroller
Register 14: Precision Internal Oscillator Statistics (PIOSCSTAT), offset 0x154
This register provides the user information on the PIOSC calibration. Note that a 32.768-kHz oscillator
must be used as the Hibernation module clock source for the user to be able to calibrate the PIOSC.
Precision Internal Oscillator Statistics (PIOSCSTAT)
Base 0x400F.E000
Offset 0x154
Type RO, reset 0x0000.0040
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
reserved
DT
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
-
-
-
-
-
-
-
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
reserved
RESULT
reserved
CT
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
1
0
0
0
0
0
0
Bit/Field
31:23
22:16
15:10
9:8
Name
reserved
DT
reserved
RESULT
Type
RO
RO
RO
RO
Reset
0x00
-
0x0
0
Description
Software should not rely on the value of a reserved bit. To provide
compatibility with future products, the value of a reserved bit should be
preserved across a read-modify-write operation.
Default Trim Value
This field contains the default trim value. This value is loaded into the
PIOSC after every full power-up.
Software should not rely on the value of a reserved bit. To provide
compatibility with future products, the value of a reserved bit should be
preserved across a read-modify-write operation.
Calibration Result
Value Description
0x0 Calibration has not been attempted.
0x1 The last calibration operation completed to meet 1% accuracy.
0x2 The last calibration operation failed to meet 1% accuracy.
0x3 Reserved
7
reserved
RO
0
Software should not rely on the value of a reserved bit. To provide
compatibility with future products, the value of a reserved bit should be
preserved across a read-modify-write operation.
6:0
CT
RO
0x40 Calibration Trim Value
This field contains the trim value from the last calibration operation. After
factory calibration CT and DT are the same.
January 23, 2012
225
Texas Instruments-Production Data