LM3S3749 Luminary Micro, Inc, LM3S3749 Datasheet - Page 270

• Manufacturer Part Number: LM3S3749
• Description: Lm3s3749 Arm Microcontroller
• Manufacturer: Luminary Micro, Inc

General-Purpose Input/Outputs (GPIOs)
270
Bit/Field
7:0
AFSEL
Name
Type
R/W
Reset
-
Preliminary
Description
GPIO Alternate Function Select
The AFSEL values are defined as follows:
Value
0
1
Description
Software control of corresponding GPIO line (GPIO mode).
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.
June 02, 2008