LM3S102 Luminary Micro, Inc, LM3S102 Datasheet - Page 81
LM3S102
Manufacturer Part Number
LM3S102
Description
Lm3s102 Arm Microcontroller
Manufacturer
Luminary Micro, Inc
Datasheet
1.LM3S102.pdf
(330 pages)
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July 6, 2006
Reset
Reset
Type
Type
Bit/Field
31:25
23:18
15:13
Run-Mode, Sleep-Mode, and Deep-Sleep-Mode Clock Gating Control 1 (RCGC1, SCGC1, and DCGC1)
Offset 0x104, 0x114, and 0x124
24
17
16
RO
RO
31
15
0
0
reserved
Register 22: Run-Mode Clock Gating Control 1 (RCGC1), offset 0x104
Register 23: Sleep-Mode Clock Gating Control 1 (SCGC1), offset 0x114
Register 24: Deep-Sleep-Mode Clock Gating Control 1 (DCGC1), offset 0x124
These registers control the clock gating logic. Each bit controls a clock enable for a given
interface, function, or unit. If set, the unit receives a clock and functions. Otherwise, the unit is
unclocked and disabled (saving power). The reset state of these bits is 0 (unclocked) unless
otherwise noted, so that all functional units are disabled. It is the responsibility of software to
enable the ports necessary for the application. Note that these registers may contain more bits
than there are interfaces, functions, or units to control. This is to assure reasonable code
compatibility with other family and future parts.
RCGC1 is the clock configuration register for running operation, SCGC1 for Sleep operation, and
DCGC1 for Deep-Sleep operation. Setting the ACG bit in the Run-Mode Clock Configuration
(RCC) register (see page 75) specifies that the system uses sleep modes.
RO
RO
30
14
0
0
reserved
reserved
reserved
COMP0
GPTM1
GPTM0
Name
RO
RO
29
13
0
0
reserved
I2C
R/W
RO
28
12
0
0
Type
R/W
R/W
R/W
RO
RO
RO
RO
RO
27
11
0
0
RO
RO
26
10
0
0
Reset
RO
RO
25
0
9
0
0
0
0
0
0
0
Preliminary
reserved
COMP0
R/W
RO
24
0
8
0
Description
Reserved bits return an indeterminate value, and should
never be changed.
This bit controls the clock gating for the Comparator 0
module. If set, the unit receives a clock and functions.
Otherwise, the unit is unclocked and disabled.
Reserved bits return an indeterminate value, and should
never be changed.
This bit controls the clock gating for the General Purpose
Timer 1 module. If set, the unit receives a clock and
functions. Otherwise, the unit is unclocked and disabled.
This bit controls the clock gating for the General Purpose
Timer 0 module. If set, the unit receives a clock and
functions. Otherwise, the unit is unclocked and disabled.
Reserved bits return an indeterminate value, and should
never be changed.
RO
RO
23
0
7
0
RO
RO
22
0
6
0
RO
RO
21
0
5
0
reserved
SSI
R/W
RO
20
0
4
0
RO
RO
19
0
3
0
reserved
LM3S102 Data Sheet
RO
RO
18
0
2
0
GPTM1 GPTM0
R/W
RO
17
0
1
0
UART0
R./W
R/W
16
0
0
0
81
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