Samsung S5PC110 Manual page 276

S5PC110_UM
GPH3CON
GPH3CON[7]
2.2.59.2 Port Group GPH3 Control Register (GPH3DAT, R/W, Address = 0xE020_0C64)
GPH3DAT
GPH3DAT[7:0]
2.2.59.3 Port Group GPH3 Control Register (GPH3PUD, R/W, Address = 0xE020_0C68)
GPH3PUD
GPH3PUD[n]
2.2.59.4 Port Group GPH3 Control Register (GPH3DRV, R/W, Address = 0xE020_0C6C)
GPH3DRV
GPH3DRV[n]
Bit
1111 = EXT_INT[30]
[31:28] 0000 = Input
0001 = Output
0010 = Reserved
0011 = KP_ROW[7]
0011 ~ 1110 = Reserved
1111 = EXT_INT[31]
Bit
[7:0] When the port is configured as input port, the
corresponding bit is the pin state. When the port is
configured as 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
[2n+1:2n] 00 = Pull-up/down disabled
01 = Pull-down enabled
n=0~7
10 = Pull-up enabled
11 = Reserved
Bit
[2n+1:2n] 00 = 1x
10 = 2x
n=0~7
01 = 3x
11 = 4x
2 GENERAL PURPOSE INPUT/ OUTPUT
Description
Description
Description
Description
Initial State
0000
Initial State
0x00
Initial State
0x5555
Initial State
0x00
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