LM3S308 Luminary Micro, Inc, LM3S308 Datasheet - Page 143

• Manufacturer Part Number: LM3S308
• Description: Lm3s308 Arm Microcontroller
• Manufacturer: Luminary Micro, Inc

June 04, 2008
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 register
is 0x0000.0000 for all GPIO pins, with the exception
of the five JTAG pins (PB7 and PC[3:0]). These five
pins default to JTAG functionality. Because of this,
the default reset value of GPIOAFSEL for GPIO Port
B is 0x0000.0080 while the default reset value for
Port C is 0x0000.000F.
LM3S308 Microcontroller
143