Rabbit RabbitCore User Manual page 114

Table B-6. RCM3700 Prototyping Board Use of Rabbit 3000 Parallel Ports
Port I/O
PE5 Output
PE6 Output
PE7 Output
PF0 Output
PF1 Input
PF2–PF3 Input
PF4 Input
PF5 Output
PF6 Output
PF7 Output
PG0–PG1 Input
PG2 Input
PG3 Input
PG4–PG5 Input
PG6 Output
PG7 Input
108
Use
RS-232 enable
Serial Flash Select
LCD/keypad module BUFEN
A/D converter select line
A/D converter busy
Not used
Switch S1
RS-485 Tx enable
LED DS1
LED DS2
Not used
TXF IrDA
Serial Port F
RXF IrDA
Not used
TXE RS-485 or RS-232
Serial Port E
RXE RS-485 or RS-232
Initial State
Pulled up (Proto Board)
(RS-232 disabled)
Pulled up (core module)
Pulled up (Proto Board)
Pulled up (Proto Board)
Pulled down (Proto Board)
Pulled up (core module)
Pulled up (Proto Board)
Pulled down (Proto Board)
High
High
Pulled up (Proto Board)
Pulled up (core module)—
tied to PC1
Pulled up (core module)—
tied to PC3
Pulled up (Proto Board)
High (set by drivers)
Pulled up (set by drivers)
RabbitCore RCM3750