Samsung S5PC110 Manual page 83

S5PC110_UM
2.2.4.2 Port Group GPB Control Register (GPBDAT, R/W, Address = 0xE020_0044)
GPBDAT
GPBDAT[7:0]
2.2.4.3 Port Group GPB Control Register (GPBPUD, R/W, Address = 0xE020_0048)
GPBPUD
GPBPUD[n] [2n+1:2n]
2.2.4.4 Port Group GPB Control Register (GPBDRV, R/W, Address = 0xE020_004C)
GPBDRV
GPBDRV[n] [2n+1:2n]
2.2.4.5 Port Group GPB Control Register (GPBCONPDN, R/W, Address = 0xE020_0050)
GPBCONPDN
GPB[n] [2n+1:2n]
2.2.4.6 Port Group GPB Control Register (GPBPUDPDN, R/W, Address = 0xE020_0054)
GPBPUDPDN
GPB[n] [2n+1:2n]
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
00 = Pull-up/ down disabled
01 = Pull-down enabled
n=0~7
10 = Pull-up enabled
11 = Reserved
Bit
00 = 1x
10 = 2x
n=0~7
01 = 3x
11 = 4x
Bit
00 = Output 0
01 = Output 1
n=0~7
10 = Input
11 = Previous state
Bit
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
Description
Description
Initial State
0x00
Initial State
0x5555
Initial State
0x0000
Initial State
0x00
Initial State
0x00
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