Samsung S3C2451X User Manual page 279

S3C2451X RISC MICROPROCESSOR
PORT G CONTROL REGISTERS (GPGCON, GPGDAT, GPFUDP) (Continued)
GPGDAT
Reserved
GPG[15:0]
GPGUDP
GPGUDP15
~
GPGUDP0
Bit
[31:16] Reserved
[15:0] When the port is configured as an input port, the corresponding bit is the
pin state. When the port is configured as an output port, the pin state is the
same as the corresponding bit.
When the port is configured as functional pin, the undefined value will be
read.
Bit
[CPU:CPD]
[31:30]
~
00 : pull-up/down disable
[1:0]
01 : pull-down enable
10 : pull-up enable
11 : not-available
Description
Description
I/O PORTS
11-23