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CONTROL REGISTERS
P1CONL
— Port 1 Control Register (Low Byte)
Bit Identifier
Reset Value
Read/Write
Addressing Mode
.7–.6
.5–.4
.3–.2
.1–.0
4-26
.7
.6
0
0
R/W
R/W
Register addressing mode only
P1.3/INT3 Configuration Bits
0
0
Schmitt trigger input mode
0
1
N-channel open-drain output mode
1
0
Push-pull output mode
1
1
Not used for the S3C8275X/C8278X/C8274X
P1.2/SI Configuration Bits
0
0
Schmitt trigger input mode (SI)
0
1
N-channel open-drain output mode
1
0
Push-pull output mode
1
1
Not used for the S3C8275X/C8278X/C8274X
P1.1/SO Configuration Bits
0
0
Schmitt trigger input mode
0
1
N-channel open-drain output mode
1
0
Push-pull output mode
1
1
Alternative function (SO)
P1.0/SCK Configuration Bits
0
0
Schmitt trigger input mode (SCK)
0
1
N-channel open-drain output mode
1
0
Push-pull output mode
1
1
Alternative function (SCK)
S3C8275X/F8275X/C8278X/F8278X/C8274X/F8274X
.5
.4
0
0
R/W
R/W
R/W
E8H
Set 1, Bank 0
.3
.2
.1
0
0
0
R/W
R/W
.0
0
R/W
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