LM3S5739 Datasheet, PDF (379/856 Pages) Texas Instruments – Stellaris® LM3S5739 Microcontroller

Stellaris® LM3S5739 Microcontroller
Bit/Field
31:8
7:0
Name
reserved
AFSEL
Type
RO
R/W
Reset
0x00
-
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.
GPIO Alternate Function Select
The AFSEL values are defined as follows:
Value Description
0 Software control of corresponding GPIO line (GPIO mode).
1 Hardware control of corresponding GPIO line (alternate
hardware function).
Note:
The default reset value for the GPIOAFSEL,
GPIOPUR, and GPIODEN registers are 0x0000.0000
for all GPIO pins, with the exception of the four
JTAG/SWD pins (PC[3:0]). These four pins default
to JTAG/SWD functionality. Because of this, the
default reset value of these registers for Port C is
0x0000.000F.
November 17, 2011
379
Texas Instruments-Production Data