Samsung S5PC110 Manual page 114

S5PC110_UM
2.2.18.2 Port Group GPG3 Control Register (GPG3DAT, R/W, Address = 0xE020_0204)
GPG3DAT
GPG3DAT[6:0]
2.2.18.3 Port Group GPG3 Control Register (GPG3PUD, R/W, Address = 0xE020_0208)
GPG3PUD
GPG3PUD[n]
2.2.18.4 Port Group GPG3 Control Register (GPG3DRV, R/W, Address = 0xE020_020C)
GPG3DRV
GPG3DRV[n]
2.2.18.5 Port Group GPG3 Control Register (GPG3CONPDN, R/W, Address = 0xE020_0210)
GPG3CONPDN
GPG3[n]
2.2.18.6 Port Group GPG3 Control Register (GPG3PUDPDN, R/W, Address = 0xE020_0214)
GPG3PUDPDN
GPG3[n]
Bit
[6:0] 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=0~6
10 = Pull-up enabled
11 = Reserved
Bit
[2n+1:2n] 00 = 1x
10 = 2x
n=0~6
01 = 3x
11 = 4x
Bit
[2n+1:2n] 00 = Output 0
01 = Output 1
n=0~6
10 = Input
11 = Previous state
Bit
[2n+1:2n] 00 = Pull-up/ down disabled
01 = Pull-down enabled
n=0~6
10 = Pull-up enabled
11 = Reserved
2 GENERAL PURPOSE INPUT/ OUTPUT
Description
Description
Description
Description
Description
Initial State
0x00
Initial State
0x1555
Initial State
0x0000
Initial State
0x00
Initial State
0x00
2-79