Preliminary
I/O PORTS
S3C2451X RISC MICROPROCESSOR
11-28
PORT K CONTROL REGISTERS(GPKCON, GPKDAT, GPKUDP)
Register Address
R/W
Description
Reset
Value
GPKCON
0x560000e0
R/W
Configures the pins of port K
0xaaaaaaaa
GPKDAT
0x560000e4
R/W
The data register for port K
0x0
GPKUDP 0x560000e8
R/W
pull-up/down
control register for port K
0x55555555
GPKCON Bit
Description
GPK15
[31:30]
00 : Input 01 : Output
10 : Sdata[31] 11 : Reserved
GPK14
[29:28]
00 : Input 01 : Output
10 : Sdata[30] 11 : Reserved
GPK13
[27:26]
00 : Input 01 : Output
10 : Sdata[29] 11 : Reserved
GPK12
[25:24]
00 : Input 01 : Output
10 : Sdata[28] 11 : Reserved
GPK11
[23:22]
00 : Input 01 : Output
10 : Sdata[27] 11 : Reserved
GPK10
[21:20]
00 : Input 01 : Output
10 : Sdata[26] 11 : Reserved
GPK9
[19:18]
00 : Input 01 : Output
10 : Sdata[25] 11 : Reserved
GPK8
[17:16]
00 : Input 01 : Output
10 : Sdata[24] 11 : Reserved
GPK7
[15:14]
00 : Input 01 : Output
10 : Sdata[23] 11 : Reserved
GPK6
[13:12]
00 : Input 01 : Output
10 : Sdata[22] 11 : Reserved
GPK5
[11:10]
00 : Input 01 : Output
10 : Sdata[21] 11 : Reserved
GPK4
[9:8]
00 : Input 01 : Output
10 : Sdata[20] 11 : Reserved
GPK3
[7:6]
00 : Input 01 : Output
10 : Sdata[19] 11 : Reserved
GPK2
[5:4]
00 : Input 01 : Output
10 : Sdata[18] 11 : Reserved
GPK1
[3:2]
00 : Input 01 : Output
10 : Sdata[17] 11 : Reserved