TM4C1237E6PM Datasheet, PDF (311/1277 Pages) Texas Instruments – Tiva Microcontroller

Tiva^™ TM4C1237E6PM Microcontroller
Register 46: Hibernation Software Reset (SRHIB), offset 0x514
The SRHIB register provides software the capability to reset the available Hibernation module. This
register provides the same capability as the legacy Software Reset Control n SRCRn registers
specifically for the Hibernation module and has the same bit polarity as the corresponding SRCRn
bits.
A peripheral is reset by software using a simple two-step process:
1. Software sets a bit (or bits) in the SRHIB register. While the SRHIB bit is 1, the peripheral is
held in reset.
2. Software completes the reset process by clearing the SRHIB bit.
There may be latency from the clearing of the SRHIB bit to when the peripheral is ready for use.
Software can check the corresponding PRHIB bit to be sure.
Important: This register should be used to reset the Hibernation module. To support legacy software,
the SRCR0 register is available. Setting the HIB bit in the SRCR0 register also resets
the Hibernation module. If the HIB bit is set by writing to the SRCR0 register, it can be
read back correctly when reading the SRCR0 register. If software uses this register to
reset the Hibernation module, the write causes proper operation, but the value of the
HIB bit is not reflected in the SRCR0 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.
Hibernation Software Reset (SRHIB)
Base 0x400F.E000
Offset 0x514
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
R0
Type RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RW
Reset
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Bit/Field
31:1
0
Name
reserved
R0
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.
Hibernation Module Software Reset
Value Description
0 Hibernation module is not reset.
1 Hibernation module is reset.
June 12, 2014
311
Texas Instruments-Production Data