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CONTROL REGISTERS
P1CONH
— Port 1 Control Register (High Byte)
Bit Identifier
RESET Value
RESET
Read/Write
Addressing Mode
.7–.6
.5–.4
.3–.2
.1–.0
4-22
.7
.6
0
0
R/W
R/W
Register addressing mode only
P1.7/SI
0
0
Input mode (SI)
0
1
Output mode, open-drain
1
0
Alternative function (push-pull output)
1
1
Output mode, push-pull
P1.6/SCK
0
0
Input mode (SCK)
0
1
Output mode, open-drain
1
0
Alternative function (SCK out)
1
1
Output mode, push-pull
P1.5/SO
0
0
Input mode
0
1
Output mode, open-drain
1
0
Alternative function (SO)
1
1
Output mode, push-pull
P1.4/BUZ
0
0
Input mode
0
1
Output mode, open-drain
1
0
Alternative function (BUZ)
1
1
Output mode, push-pull
S3C8248/C8245/P8245/C8247/C8249/P8249
.5
.4
0
0
R/W
R/W
R/W
E4H
Set 1, Bank 0
.3
.2
.1
0
0
0
R/W
R/W
.0
0
R/W
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