Samsung S5PC110 Manual page 97

S5PC110_UM
GPF0CON
GPF0CON[1]
GPF0CON[0]
2.2.11.2 Port Group GPF0 Control Register (GPF0DAT, R/W, Address = 0xE020_0124)
GPF0DAT
GPF0DAT[7:0]
2.2.11.3 Port Group GPF0 Control Register (GPF0PUD, R/W, Address = 0xE020_0128)
GPF0PUD
GPF0PUD[n]
2.2.11.4 Port Group GPF0 Control Register (GPF0DRV, R/W, Address = 0xE020_012C)
GPF0DRV
GPF0DRV[n]
Bit
[7:4] 0000 = Input
0001 = Output
0010 = LCD_VSYNC
0011 = SYS_CS1
0100 = VEN_VSYNC
0101 ~ 1110 = Reserved
1111 = GPF0_INT[1]
[3:0] 0000 = Input
0001 = Output
0010 = LCD_HSYNC
0011 = SYS_CS0
0100 = VEN_HSYNC
0101 ~ 1110 = Reserved
1111 = GPF0_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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