TM4C1231E6PZ Datasheet, PDF (320/1173 Pages) Texas Instruments – Tiva™ TM4C1231E6PZ Microcontroller

System Control
Register 55: Watchdog Timer Run Mode Clock Gating Control (RCGCWD),
offset 0x600
The RCGCWD register provides software the capability to enable and disable watchdog modules
in Run mode. When enabled, a module is provided a clock and accesses to module registers are
allowed. When disabled, the clock is disabled to save power and accesses to module registers
generate a bus fault. This register provides the same capability as the legacy Run Mode Clock
Gating Control Register n RCGCn registers specifically for the watchdog modules and has the
same bit polarity as the corresponding RCGCn bits.
Important: This register should be used to control the clocking for the watchdog modules. To
support legacy software, the RCGC0 register is available. A write to the RCGC0 register
also writes the corresponding bit in this register. Any bits that are changed by writing
to the RCGC0 register can be read back correctly with a read of the RCGC0 register.
If software uses this register to write a legacy peripheral (such as Watchdog 0), the
write causes proper operation, but the value of that bit is not reflected in the RCGC0
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.
Watchdog Timer Run Mode Clock Gating Control (RCGCWD)
Base 0x400F.E000
Offset 0x600
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
R1
R0
Type RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RW
RW
Reset
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Bit/Field
31:2
1
Name
reserved
R1
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.
Watchdog Timer 1 Run Mode Clock Gating Control
Value Description
0 Watchdog module 1 is disabled.
1 Enable and provide a clock to Watchdog module 1 in Run mode.
0
R0
RW
0
Watchdog Timer 0 Run Mode Clock Gating Control
Value Description
0 Watchdog module 0 is disabled.
1 Enable and provide a clock to Watchdog module 0 in Run mode.
320
June 12, 2014
Texas Instruments-Production Data