Samsung S5PC110 Manual page 85

S5PC110_UM
2.2.5.2 Port Group GPC0 Control Register (GPC0DAT, R/W, Address = 0xE020_0064)
GPC0DAT
GPC0DAT[4:0]
2.2.5.3 Port Group GPC0 Control Register (GPC0PUD, R/W, Address = 0xE020_0068)
GPC0PUD
GPC0PUD[n]
2.2.5.4 Port Group GPC0 Control Register (GPC0DRV, R/W, Address = 0xE020_006C)
GPC0DRV
GPC0DRV[n]
2.2.5.5 Port Group GPC0 Control Register (GPC0CONPDN, R/W, Address = 0xE020_0070)
GPC0CONPDN
GPC0[n]
2.2.5.6 Port Group GPC0 Control Register (GPC0PUDPDN, R/W, Address = 0xE020_0074)
GPC0PUDPDN
GPC0[n]
Bit
[4:0] 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=0~4
10 = Pull-up enabled
11 = Reserved
Bit
[2n+1:2n] 00 = 1x
10 = 2x
n=0~4
01 = 3x
11 = 4x
Bit
[2n+1:2n] 00 = Output 0
01 = Output 1
n=0~4
10 = Input
11 = Previous state
Bit
[2n+1:2n] 00 = Pull-up/ down disabled
01 = Pull-down enabled
n=0~4
10 = Pull-up enabled
11 = Reserved
2 GENERAL PURPOSE INPUT/ OUTPUT
Description
Description
Description
Description
Description
Initial State
0x00
Initial State
0x0155
Initial State
0x0000
Initial State
0x00
Initial State
0x00
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