TM4C123GH6PMI Datasheet, PDF (310/1396 Pages) Texas Instruments – TivaTM4C123GH6PM Microcontroller

System Control
Register 43: 16/32-Bit General-Purpose Timer Software Reset (SRTIMER),
offset 0x504
The SRTIMER register provides software the capability to reset the available 16/32-bit timer modules.
This register provides the same capability as the legacy Software Reset Control n SRCRn registers
specifically for the timer modules 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 SRTIMER register. While the SRTIMER bit is 1, the peripheral
is held in reset.
2. Software completes the reset process by clearing the SRTIMER bit.
There may be latency from the clearing of the SRTIMER bit to when the peripheral is ready for use.
Software can check the corresponding PRTIMER bit to be sure.
Important: This register should be used to reset the timer modules. To support legacy software,
the SRCR1 register is available. Setting a bit in the SRCR1 register also resets the
corresponding module. Any bits that are changed by writing to the SRCR1 register can
be read back correctly when reading the SRCR1 register. Software must use this register
to reset modules that are not present in the legacy registers. If software uses this register
to reset a legacy peripheral (such as Timer 1), the write causes proper operation, but
the value of that bit is not reflected in the SRCR1 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 Software Reset (SRTIMER)
Base 0x400F.E000
Offset 0x504
Type R/W, 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
R5
R4
R3
R2
R1
R0
Type RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
R/W
R/W
R/W
R/W
R/W
R/W
Reset
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Bit/Field
31:6
5
Name
reserved
R5
Type
RO
R/W
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 Software Reset
Value Description
1 16/32-bit general-purpose timer module 5 is reset.
0 16/32-bit general-purpose timer module 5 is not reset.
310
July 17, 2013
Texas Instruments-Production Data