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PRELIMINARY
S3C6400 RISC MICROPROCESSOR
GPIO
10-
23
Preliminary product information describe products that are in development,
for which full characterization data and associated errata are not yet available.
Specifications and information herein are subject to change without notice.
PORT I CONTROL REGISTERS
There are five control registers including GPICON, GPIDAT, GPIPUD, GPICONSLP ,and GPIPUDSLP in the Port
I Control Registers.
Register
Address
R/W
Description
Reset Value
GPICON 0x7F008100
R/W
Port
I
Configuration Register
0x00
GPIDAT
0x7F008104
R/W
Port I Data Register
Undefined
GPIPUD 0x7F008108
R/W
Port
I
Pull-up/down Register
0x55555555
GPICONSLP
0x7F00810C
R/W
Port I Sleep mode Configuration Register
0x0
GPIPUDSLP
0x7F008110
R/W
Port I Sleep mode Pull-up/down Register
0x0
GPICON
Bit
Description
Initial State
GPI0
[1:0]
00 = Input
01 = Output
10 = LCD VD[0]
11 = reserved
00
GPI1
[3:2]
00 = Input
01 = Output
10 = LCD VD[1]
11 = reserved
00
GPI2
[5:4]
00 = Input
01 = Output
10 = LCD VD[2]
11 = reserved
00
GPI3
[7:6]
00 = Input
01 = Output
10 = LCD VD[3]
11 = reserved
00
GPI4
[9:8]
00 = Input
01 = Output
10 = LCD VD[4]
11 = reserved
00
GPI5
[11:10]
00 = Input
01 = Output
10 = LCD VD[5]
11 = reserved
00
GPI6
[13:12]
00 = Input
01 = Output
10 = LCD VD[6]
11 = reserved
00
GPI7
[15:14]
00 = Input
01 = Output
10 = LCD VD[7]
11 = reserved
00
GPI8
[17:16]
00 = Input
01 = Output
10 = LCD VD[8]
11 = reserved
00
GPI9
[19:18]
00 = Input
01 = Output
10 = LCD VD[9]
11 = reserved
00
GPI10
[21:20]
00 = Input
01 = Output
10 = LCD VD[10]
11 = reserved
00
GPI11
[23:22]
00 = Input
01 = Output
10 = LCD VD[11]
11 = reserved
00
GPI12
[25:24]
00 = Input
01 = Output
10 = LCD VD[12]
11 = reserved
00
GPI13
[27:26]
00 = Input
01 = Output
10 = LCD VD[13]
11 = reserved
00