Samsung S5PC110 Manual page 100

S5PC110_UM
GPF1CON
GPF1CON[1]
GPF1CON[0]
2.2.12.2 Port Group GPF1 Control Register (GPF1DAT, S/W, Address = 0xE020_0144)
GPF1DAT
GPF1DAT[7:0]
2.2.12.3 Port Group GPF1 Control Register (GPF1PUD, S/W, Address = 0xE020_0148)
GPF1PUD
GPF1PUD[n]
2.2.12.4 Port Group GPF1 Control Register (GPF1DRV, S/W, Address = 0xE020_014C)
GPF1DRV
GPF1DRV[n]
Bit
[7:4] 0000 = Input
0001 = Output
0010 = LCD_VD[5]
0011 = SYS_VD[5]
0100 = VEN_DATA[5]
0101 ~ 1110 = Reserved
1111 = GPF1_INT[1]
[3:0] 0000 = Input
0001 = Output
0010 = LCD_VD[4]
0011 = SYS_VD[4]
0100 = VEN_DATA[4]
0101 ~ 1110 = Reserved
1111 = GPF1_INT[0]
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
0000
Initial State
0x00
Initial State
0x5555
Initial State
0x0000
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