Texas Instruments Development Kit for TM4C129x,Tiva™ ARM® Cortex™ -M4 Microcontroller DK-TM4C129X DK-TM4C129X Datenbogen
Produktcode
DK-TM4C129X
Register 15: GPTM Timer B Prescale (GPTMTBPR), offset 0x03C
This register allows software to extend the range of the timers when they are used individually.
When in one-shot or periodic down count modes, this register acts as a true prescaler for the timer
counter. When acting as a true prescaler, the prescaler counts down to 0 before the value in the
GPTMTBR and GPTMTBV registers are incremented. In all other individual/split modes, this register
is a linear extension of the upper range of the timer counter, holding bits 23:16 in the 16-bit modes
of the 16/32-bit GPTM.
When in one-shot or periodic down count modes, this register acts as a true prescaler for the timer
counter. When acting as a true prescaler, the prescaler counts down to 0 before the value in the
GPTMTBR and GPTMTBV registers are incremented. In all other individual/split modes, this register
is a linear extension of the upper range of the timer counter, holding bits 23:16 in the 16-bit modes
of the 16/32-bit GPTM.
GPTM Timer B Prescale (GPTMTBPR)
16/32-bit Timer 0 base: 0x4003.0000
16/32-bit Timer 1 base: 0x4003.1000
16/32-bit Timer 2 base: 0x4003.2000
16/32-bit Timer 3 base: 0x4003.3000
16/32-bit Timer 4 base: 0x4003.4000
16/32-bit Timer 5 base: 0x4003.5000
16/32-bit Timer 6 base: 0x400E.0000
16/32-bit Timer 7 base: 0x400E.1000
Offset 0x03C
Type RW, reset 0x0000.0000
16/32-bit Timer 1 base: 0x4003.1000
16/32-bit Timer 2 base: 0x4003.2000
16/32-bit Timer 3 base: 0x4003.3000
16/32-bit Timer 4 base: 0x4003.4000
16/32-bit Timer 5 base: 0x4003.5000
16/32-bit Timer 6 base: 0x400E.0000
16/32-bit Timer 7 base: 0x400E.1000
Offset 0x03C
Type RW, reset 0x0000.0000
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
reserved
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
Type
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Reset
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
TBPSR
reserved
RW
RW
RW
RW
RW
RW
RW
RW
RO
RO
RO
RO
RO
RO
RO
RO
Type
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Reset
Description
Reset
Type
Name
Bit/Field
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.
compatibility with future products, the value of a reserved bit should be
preserved across a read-modify-write operation.
0
RO
reserved
31:8
GPTM Timer B Prescale
The register loads this value on a write. A read returns the current value
of this register.
of this register.
For the 16/32-bit GPTM, this field contains the entire 8-bit prescaler.
Refer to Table 16-5 on page 1109 for more details and an example.
0x00
RW
TBPSR
7:0
December 13, 2013
1156
Texas Instruments-Advance Information
General-Purpose Timers