TM4C123GH6PM Datasheet, PDF (360/1409 Pages) Texas Instruments – Tiva Microcontroller

System Control
Register 75: 16/32-Bit General-Purpose Timer Sleep Mode Clock Gating Control
(SCGCTIMER), offset 0x704
The SCGCTIMER register provides software the capability to enable and disable 16/32-bit timer
modules in sleep mode. When enabled, a module is provided a clock. When disabled, the clock is
disabled to save power. This register provides the same capability as the legacy Sleep Mode Clock
Gating Control Register n SCGCn registers specifically for the timer modules and has the same
bit polarity as the corresponding SCGCn bits.
Important: This register should be used to control the clocking for the timer modules. To support
legacy software, the SCGC1 register is available. A write to the SCGC1 register also
writes the corresponding bit in this register. Any bits that are changed by writing to the
SCGC1 register can be read back correctly with a read of the SCGC1 register. Software
must use this register to support modules that are not present in the legacy registers.
If software uses this register to write a legacy peripheral (such as Timer 0), the write
causes proper operation, but the value of that bit is not reflected in the SCGC1 register.
If software uses both legacy and peripheral-specific register accesses, the
peripheral-specific registers must be accessed by read-modify-write operations that
affect only peripherals that are not present in the legacy registers. In this manner, both
the peripheral-specific and legacy registers have coherent information.
16/32-Bit General-Purpose Timer Sleep Mode Clock Gating Control (SCGCTIMER)
Base 0x400F.E000
Offset 0x704
Type RW, reset 0x0000.0000
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
S5
S4
S3
S2
S1
S0
Type RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RW
RW
RW
RW
RW
RW
Reset
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Bit/Field
31:6
5
Name
reserved
S5
Type
RO
RW
Reset
0
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.
16/32-Bit General-Purpose Timer 5 Sleep Mode Clock Gating Control
Value Description
0 16/32-bit general-purpose timer module 5 is disabled.
1 Enable and provide a clock to 16/32-bit general-purpose timer
module 5 in sleep mode.
4
S4
RW
0
16/32-Bit General-Purpose Timer 4 Sleep Mode Clock Gating Control
Value Description
0 16/32-bit general-purpose timer module 4 is disabled.
1 Enable and provide a clock to 16/32-bit general-purpose timer
module 4 in sleep mode.
360
June 12, 2014
Texas Instruments-Production Data