General-Purpose Input/Outp uts (GPIOs)
116 October 8, 2006
Preliminary
Register 2: GPIO Direction (GPIODIR), offset 0x400
The GPIODIR register is the data direction register. Bit s set to 1 in the GPIODIR register configure
the corresponding pin to be an output, while bits set to 0 configure the pins to be inputs. All bits are
cleared by a reset, meaning all GPIO pins are inputs by default.
Bit/Field Name Type Reset Description
31:8 reserved RO 0 Reserved bits return an indeterminate value, and should never
be changed.
7:0 DIR R/W 0x00 GPIO Data Direction
0: Pins are inputs.
1: Pins are outputs.
reserved
RO
0
GPIO Direction (GPIODIR)
Offset 0x400
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
Reset
Type
000000000000000
RO RO RO RO RO RO RO RO RO RO RO RO RO RO RO
RO
0
Reset
Type
000000000000000
RO RO RO RO RO RO RO R/W R/W R/W R/W R/W R/W R/W R/W
reserved
DIR