Samsung C8278X ユーザーズマニュアル
CONTROL REGISTERS
S3C8275X/F8275X/C8278X/F8278X/C8274X/F8274X
4-26
P1CONL
— Port 1 Control Register (Low Byte)
E8H
Set 1, Bank 0
Bit
Identifier
.7 .6 .5 .4 .3 .2 .1 .0
Reset Value
0 0 0 0 0 0 0 0
Read/Write
R/W R/W R/W R/W R/W R/W R/W R/W
Addressing Mode
Register addressing mode only
.7–.6
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
.5–.4
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
.3–.2
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)
.1–.0
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)