Samsung S5PC110 Manual page 121

S5PC110_UM
2.2.21.2 Port Group GPJ1 Control Register (GPJ1DAT, R/W, Address = 0xE020_0264)
GPJ1DAT
GPJ1DAT[5:0]
2.2.21.3 Port Group GPJ1 Control Register (GPJ1PUD, R/W, Address = 0xE020_0268)
GPJ1PUD
GPJ1PUD[n]
2.2.21.4 Port Group GPJ1 Control Register (GPJ1DRV, R/W, Address = 0xE020_026C)
GPJ1DRV
GPJ1DRV[n]
2.2.21.5 Port Group GPJ1 Control Register (GPJ1CONPDN, R/W, Address = 0xE020_0270)
GPJ1CONPDN
GPJ1[n]
2.2.21.6 Port Group GPJ1 Control Register (GPJ1PUDPDN, R/W, Address = 0xE020_0274)
GPJ1PUDPDN
GPJ1[n]
Bit
[5:0] 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=0~5
10 = Pull-up enabled
11 = Reserved
Bit
[2n+1:2n] 00 = 1x
10 = 2x
n=0~5
01 = 3x
11 = 4x
Bit
[2n+1:2n] 00 = Output 0
01 = Output 1
n=0~5
10 = Input
11 = Previous state
Bit
[2n+1:2n] 00 = Pull-up/ down disabled
01 = Pull-down enabled
n=0~5
10 = Pull-up enabled
11 = Reserved
2 GENERAL PURPOSE INPUT/ OUTPUT
Description
Description
Description
Description
Description
Initial State
0x00
Initial State
0x0555
Initial State
0x0000
Initial State
0x00
Initial State
0x00
2-86