Use Of Rabbit 3000 Parallel Ports - Rabbit RabbitCore RCM3209 User Manual

B.5 Use of Rabbit 3000 Parallel Ports
Table B-2 lists the Rabbit 3000 parallel ports and their use for the RCM30/31/32XX
Prototyping Board.
Table B-2. RCM30/31/32XX Prototyping Board
Port I/O
PA0–PA7 Output
PB0–PB1 Input
PB2–PB5 Input
PB6–PB7 Output
PC0 Output
PC1 Input
PC2 Output
PC3 Input
PC4 Output
PC5 Input
PC6 Output
PC7 Input
PD0 Output
PD1 Input
PD2–PD4 Output
PD5 Input
PD6–PD7 Output
PE0–PE1 Output
PE2 Output
PE3 Output
PE4 Output
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Use of Rabbit 3000 Parallel Ports

Use
Configurable external I/O bus
Not used
Configurable external I/O bus
Not used
Not used
Not used
TXC
RXC
TXB
RXB
TXA Programming Port
RXA Programming Port
Ethernet RSTDRV
Not used
Not used
Not used
Not used
Not used
Ethernet chip select
LCD device select
IrDA speed select
Initial State
High when not driven
by I/O bus
Pulled up on RCM3209/
RCM3229
High when not driven
by I/O bus
Pulled up on RCM3209/
RCM3229
High (disabled)
Pulled up on RCM3209/
RCM3229
High (disabled)
Serial Port C
Pulled up on RCM3209/
RCM3229
High (disabled)
Serial Port B
Pulled up on RCM3209/
RCM3229
High (disabled)
Serial Port A
Pulled up on RCM3209/
RCM3229
Pulled up on RCM3209/
RCM3229
Pulled up on
Prototyping Board
Low (disabled)
Low (disabled)
RabbitCore RCM3200
High
High
High
High
High