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S3C8248/C8245/P8245/C8247/C8249/P8249
P4CONH
— Port 4 Control Register (High Byte)
Bit Identifier
RESET Value
RESET
Read/Write
Addressing Mode
.7–.6
.5–.4
.3–.2
.1–.0
.7
.6
0
0
R/W
R/W
Register addressing mode only
P4.7/SEG23 Mode Selection Bits
0
0
Input mode
0
1
Input mode, pull-up
1
0
Open-drain output mode
1
1
Push-pull output mode
P4.6/SEG22 Mode Selection Bits
0
0
Input mode
0
1
Input mode, pull-up
1
0
Open-drain output mode
1
1
Push-pull output mode
P4.5/SEG21 Mode Selection Bits
0
0
Input mode
0
1
Input mode, pull-up
1
0
Open-drain output mode
1
1
Push-pull output mode
P4.4/SEG20 Mode Selection Bits
0
0
Input mode
0
1
Input mode, pull-up
1
0
Open-drain output mode
1
1
Push-pull output mode
.5
.4
0
0
R/W
R/W
R/W
CONTROL REGISTER
ECH
Set 1, Bank 1
.3
.2
.1
0
0
0
R/W
R/W
.0
0
R/W
4-29
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