Samsung S3C2451X User Manual page 285

S3C2451X RISC MICROPROCESSOR
GPK0 [1:0]
PORT K CONTROL REGISTERS (GPKCON, GPKDAT, GPKUDP) (Continued)
GPKDAT
GPK[15:0]
GPKUDP
GPKUDP15
~
GPKUDP0
00 : Input
10 : Sdata[16]
Bit
[31:0] 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
01 : Output
11 : Reserved
Description
Description
I/O PORTS
11-29