Port 1 Control Register (High Byte) - Samsung S3C80A5B User Manual

S3C80A5B
P1CONH

— Port 1 Control Register (High Byte)

Bit Identifier
RESET Value
Read/Write
Addressing Mode
.7–.6
.5–.4
.3–.2
.1–.0
.7 .6
0 0
R/W R/W
Register addressing mode only
P1.7 Mode Selection Bits
0 0 C-MOS input mode
0 1 Open-drain output mode
1 0 Push-pull output mode
1 1 Invalid setting
P1.6 Mode Selection Bits
0 0 C-MOS input mode
0 1 Open-drain output mode
1 0 Push-pull output mode
1 1 Invalid setting
P1.5 Mode Selection Bits
0 0 C-MOS input mode
0 1 Open-drain output mode
1 0 Push-pull output mode
1 1 Invalid setting
P1.4 Mode Selection Bits
0 0 C-MOS input mode
0 1 Open-drain output mode
1 0 Push-pull output mode
1 1 Invalid setting
.5 .4
0 0
R/W R/W R/W
CONTROL REGISTERS
EAH
.3 .2 .1
0 0 0
R/W R/W
Set 1
.0
0
R/W
4-19