Samsung S3F80JB - Manual (Page 98)

S3F80JB CONTROL REGISTERS
4-31
P3CON
— Port 3 Control Register EFH Set1 Bank0
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 and .6 Package Selection and Alternative Function Select Bits
0 0 32 pin package
P3.0: T0PWM/T0CAP/T1CAP/T2CAP, P3.1: REM/T0CK
Others 42/44 pin package
P3.0: T0PWM/T0CAP, P3.3: T1CAP/T2CAP
P3.1: REM, P3.2: T0CK
.5 P3.1 Function Selection Bit
0 Normal I/O selection
1 Alternative function enable (REM/T0CK)
.4 and .3 P3.1 Mode Selection Bits
0 0 Schmitt trigger input mode
0 1 Open- drain output mode
1 0 Push pull output mode
1 1 Schmitt trigger input with pull up resistor.
.2 Function Selection Bit for P3.0 & P3.3
0 Normal I/O selection
1 Alternative function enable (P3.0: T0PWM/T0CAP, P3.3: T1CAP/T2CAP)
.1 and .0 P3.0 Mode Selection Bits
0 0 Schmitt trigger input mode
0 1 Open- drain output mode
1 0 Push pull output mode
1 1 Schmitt trigger input with pull up resistor.