Samsung S5PC110 Manual page 123

S5PC110_UM
GPJ2CON
GPJ2CON[1]
GPJ2CON[0]
2.2.22.2 Port Group GPJ2 Control Register (GPJ2DAT, R/W, Address = 0xE020_0284)
GPJ2DAT
GPJ2DAT[7:0]
2.2.22.3 Port Group GPJ2 Control Register (GPJ2PUD, R/W, Address = 0xE020_0288)
GPJ2PUD
GPJ2PUD[n]
Bit
0011 = KP_COL[3]
0100 = CF_DATA[2]
0101 = MHL_D9
0110 ~ 1110 = Reserved
1111 = GPJ2_INT[2]
[7:4] 0000 = Input
0001 = Output
0010 = MSM_DATA[1]
0011 = KP_COL[2]
0100 = CF_DATA[1]
0101 = MHL_D8
0110 ~ 1110 = Reserved
1111 = GPJ2_INT[1]
[3:0] 0000 = Input
0001 = Output
0010 = MSM_DATA[0]
0011 = KP_COL[1]
0100 = CF_DATA[0]
0101 = MHL_D7
0110 ~ 1110 = Reserved
1111 = GPJ2_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
2 GENERAL PURPOSE INPUT/ OUTPUT
Description
Description
Description
Initial State
0000
0000
Initial State
0x00
Initial State
0x5555
2-88