Samsung F8274X Computer Hardware User Manual


 
S3C8275X/F8275X/C8278X/F8278X/C8274X/F8274X CONTROL REGISTER
4-31
P3CONH — Port 3 Control Register (High Byte) EDH 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 P3.7/SEG16 Configuration Bits
0 0 Input mode
0 1 N-channel open-drain output mode
1 0 Push-pull output mode
1 1 Alternative function (SEG16)
.5–.4 P3.6/SEG17 Configuration Bits
0 0 Input mode
0 1 N-channel open-drain output mode
1 0 Push-pull output mode
1 1 Alternative function (SEG17)
.3–.2 P3.5/SEG18 Configuration Bits
0 0 Input mode
0 1 N-channel open-drain output mode
1 0 Push-pull output mode
1 1 Alternative function (SEG18)
.1–.0 P3.4/SEG19 Configuration Bits
0 0 Input mode
0 1 N-channel open-drain output mode
1 0 Push-pull output mode
1 1 Alternative function (SEG19)