Texas Instruments Development Kit for TM4C129x,Tiva™ ARM® Cortex™ -M4 Microcontroller DK-TM4C129X DK-TM4C129X Datenbogen
Produktcode
DK-TM4C129X
When using the I
2
C module, in addition to setting the GPIOAFSEL register bits for the I
2
C clock
and data pins, the data pins should be set to open drain using the GPIO Open Drain Select
(GPIOODR) register (see examples in “Initialization and Configuration” on page 784).
(GPIOODR) register (see examples in “Initialization and Configuration” on page 784).
GPIO Alternate Function Select (GPIOAFSEL)
GPIO Port A (AHB) base: 0x4005.8000
GPIO Port B (AHB) base: 0x4005.9000
GPIO Port C (AHB) base: 0x4005.A000
GPIO Port D (AHB) base: 0x4005.B000
GPIO Port E (AHB) base: 0x4005.C000
GPIO Port F (AHB) base: 0x4005.D000
GPIO Port G (AHB) base: 0x4005.E000
GPIO Port H (AHB) base: 0x4005.F000
GPIO Port J (AHB) base: 0x4006.0000
GPIO Port K (AHB) base: 0x4006.1000
GPIO Port L (AHB) base: 0x4006.2000
GPIO Port M (AHB) base: 0x4006.3000
GPIO Port N (AHB) base: 0x4006.4000
GPIO Port P (AHB) base: 0x4006.5000
GPIO Port Q (AHB) base: 0x4006.6000
GPIO Port R (AHB) base: 0x4006.7000
GPIO Port S (AHB) base: 0x4006.8000
GPIO Port T (AHB) base: 0x4006.9000
Offset 0x420
Type RW, reset -
GPIO Port B (AHB) base: 0x4005.9000
GPIO Port C (AHB) base: 0x4005.A000
GPIO Port D (AHB) base: 0x4005.B000
GPIO Port E (AHB) base: 0x4005.C000
GPIO Port F (AHB) base: 0x4005.D000
GPIO Port G (AHB) base: 0x4005.E000
GPIO Port H (AHB) base: 0x4005.F000
GPIO Port J (AHB) base: 0x4006.0000
GPIO Port K (AHB) base: 0x4006.1000
GPIO Port L (AHB) base: 0x4006.2000
GPIO Port M (AHB) base: 0x4006.3000
GPIO Port N (AHB) base: 0x4006.4000
GPIO Port P (AHB) base: 0x4006.5000
GPIO Port Q (AHB) base: 0x4006.6000
GPIO Port R (AHB) base: 0x4006.7000
GPIO Port S (AHB) base: 0x4006.8000
GPIO Port T (AHB) base: 0x4006.9000
Offset 0x420
Type RW, reset -
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
AFSEL
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
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.
0x0000.00
RO
reserved
31:8
GPIO Alternate Function Select
Description
Value
The associated pin functions as a GPIO and is controlled by
the GPIO registers.
the GPIO registers.
0
The associated pin functions as a peripheral signal and is
controlled by the alternate hardware function.
controlled by the alternate hardware function.
The reset value for this register is 0x0000.0000 for GPIO ports
that are not listed in Table 10-1 on page 772.
that are not listed in Table 10-1 on page 772.
1
-
RW
AFSEL
7:0
December 13, 2013
802
Texas Instruments-Advance Information
General-Purpose Input/Outputs (GPIOs)