TM4C123GH6PMI Datasheet, PDF (341/1396 Pages) Texas Instruments – TivaTM4C123GH6PM Microcontroller

Tiva^™ TM4C123GH6PM Microcontroller _{(identical to LM4F230H5QR)}
Register 62: Hibernation Run Mode Clock Gating Control (RCGCHIB), offset
0x614
The RCGCHIB register provides software the capability to enable and disable the Hibernation
module in Run mode. When enabled, the 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 Hibernation module. To
support legacy software, the RCGC0 register is available. A write to the HIB bit in the
RCGC0 register also writes the R0 bit in this register. If the HIB bit is changed by writing
to the RCGC0 register, it can be read back correctly with a read of the RCGC0 register.
If software uses this register to control the clock for the Hibernation module, the write
causes proper operation, but the HIB bit in the RCGC0 register does not reflect the
value of the R0 bit. 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.
Hibernation Run Mode Clock Gating Control (RCGCHIB)
Base 0x400F.E000
Offset 0x614
Type R/W, reset 0x0000.0001
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
R0
Type RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
R/W
Reset
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
Bit/Field
31:1
0
Name
reserved
R0
Type
RO
R/W
Reset
0
1
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.
Hibernation Module Run Mode Clock Gating Control
Value Description
1 Enable and provide a clock to the Hibernation module in Run
mode.
0 Hibernation module is disabled.
July 17, 2013
341
Texas Instruments-Production Data