LM3S301 Luminary Micro, Inc, LM3S301 Datasheet - Page 84
LM3S301
Manufacturer Part Number
LM3S301
Description
Lm3s301 Arm Microcontroller
Manufacturer
Luminary Micro, Inc
Datasheet
1.LM3S301.pdf
(366 pages)
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System Control
84
Reset
Reset
Type
Type
31:21
19:17
Bit/Field
Run-Mode, Sleep-Mode and Deep-Sleep-Mode Clock Gating Control 0 (RCGC0, SCG0, and DCGC0)
Offset 0x100, 0x110, 0x120
20
16
RO
RO
31
15
0
0
Register 19: Run-Mode Clock Gating Control 0 (RCGC0), offset 0x100
Register 20: Sleep-Mode Clock Gating Control 0 (SCGC0), offset 0x110
Register 21: Deep-Sleep-Mode Clock Gating Control 0 (DCGC0), offset 0x120
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.
RCGC0 is the clock configuration register for running operation, SCGC0 for Sleep operation, and
DCGC0 for Deep-Sleep operation. Setting the ACG bit in the Run-Mode Clock Configuration
(RCC) register (see page 79) specifies that the system uses sleep modes.
RO
RO
30
14
0
0
reserved
reserved
reserved
Name
PWM
ADC
RO
RO
29
13
0
0
RO
RO
28
12
0
0
R/W
RO
27
11
0
0
Type
R/W
R/W
RO
RO
MAXADCSPD
R/W
RO
26
10
0
0
reserved
R/W
RO
Reset
25
0
9
0
Preliminary
0
0
0
1
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 PWM 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 ADC module. If set,
the unit receives a clock and functions. Otherwise, the unit
is unclocked and disabled.
RO
RO
23
0
7
0
RO
RO
22
0
6
0
reserved
RO
RO
21
0
5
0
PWM
R/W
RO
20
0
4
0
WDT
R/W
RO
19
0
3
0
reserved
SWO
R/W
RO
18
0
2
0
SWD
R/W
RO
17
July 5, 2006
0
1
0
JTAG
ADC
R/W
R/W
16
0
0
1
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