LM3S317 Luminary Micro, Inc, LM3S317 Datasheet - Page 83

• Manufacturer Part Number: LM3S317
• Description: Lm3s317 Arm Microcontroller
• Manufacturer: Luminary Micro, Inc

February 6, 2007
Reset
Reset
Type
Type
Bit/Field
31:16
15:14
13:5
XTAL to PLL Translation (PLLCFG)
Offset 0x064
4:0
RO
RO
31
15
0
-
OD
Register 18: XTAL to PLL Translation (PLLCFG), offset 0x064
This register provides a means of translating external crystal frequencies into the appropriate PLL
settings. This register is initialized during the reset sequence and updated anytime that the XTAL
field changes in the Run-Mode Clock Configuration (RCC) register (see page 78).
RO
RO
30
14
0
-
reserved
Name
OD
R
RO
RO
F
29
13
0
-
RO
RO
28
12
0
-
Type
RO
RO
27
11
RO
RO
RO
RO
0
-
RO
RO
26
10
0
-
Reset
RO
RO
25
F
0
9
-
0
Preliminary
-
-
-
RO
RO
24
0
8
-
reserved
Description
Reserved bits return an indeterminate value, and should
never be changed.
This field specifies the value supplied to the PLL’s OD input.
This field specifies the value supplied to the PLL’s F input.
This field specifies the value supplied to the PLL’s R input.
RO
RO
23
0
7
-
RO
RO
22
0
6
-
RO
RO
21
0
5
-
RO
RO
20
0
4
-
RO
RO
19
0
3
-
LM3S317 Data Sheet
RO
RO
18
0
2
-
R
RO
RO
17
0
1
-
RO
RO
16
0
0
-
83