I/O Port Special Register; I/O Port Mode Select Register - Samsung S3C2501X User Manual

I/O PORTS

12.3 I/O PORT SPECIAL REGISTER

Register Address
IOPMODE1 0xF0030000
IOPMODE2 0xF0030004
IOPCON1 0xF0030008
IOPCON2 0xF003000C
IOPGDMA 0xF0030010
IOPEXTINT 0xF0030014
IOPEXTINT 0xF0030018
PND
IOPDATA1 0xF003001C
IOPDATA2 0xF0030020
IOPDRV1 0xF0030024
IOPDRV2 0xF0030028
12.3.1 I/O PORT MODE SELECT REGISTER (IOPMODE1/2)
If you set IOPCON1/2 registers to GPIO, then IOPMODE1/2 registers should determine whether input or output
mode for each port.
Register Address
IOPMODE1 0xF0030000
IOPMODE2 0xF0030004
12-2
Table 12-1. I/O Port Special Registers
R/W
R/W I/O port mode select register for port 0 to 31
R/W I/O port mode select register for port 32 to 63
R/W I/O port function control register for port 0 to 31
R/W I/O port function control register for port 32 to 63
R/W I/O port special function register for GDMA
R/W I/O port special function register for external
interrupt
R/W I/O port external interrupt clear register
R/W I/O port data register for port 0 to 31
R/W I/O port data register for port 32 to 63
R/W I/O port drive control register for port 0 to 31
R/W I/O port drive control register for port 32 to 63
Table 12-2. IOPMODE1/2 Registers
R/W
R/W I/O port mode select register for port 0 to 31
R/W I/O port mode select register for port 32 to 63
Description
Description
S3C2501X
Reset Value
0xF003FFFF
0xFFFFFFFF
0xFFFFFF00
0xFFFFFC07
0x00000000
0x00000000
0x00000000
Undefined
Undefined
0x00000000
0x00000000
Reset Value
0xF003FFFF
0xFFFFFFFF