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Distributor of Digi International: Excellent Integrated System Limited
Datasheet of 101-0533 - KIT DEV RABBIT3000/RCM3100
Contact us: [email protected] Website: www.integrated-circuit.com
54
RabbitCore RCM3100
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
Use of Rabbit 3000 Parallel Ports
Port
I/O
Use
Initial State
PA0–PA7
Output
Configurable external I/O bus
High when not driven
by I/O bus
PB0–PB1
Input
Not used
Pulled up on RCM3100
PB2–PB5
Input
Configurable external I/O bus
High when not driven
by I/O bus
PB6–PB7
Output
Not used
Pulled up on RCM3100
PC0
Output
Not used
High (disabled)
PC1
Input
Not used
Pulled up on RCM3100
PC2
Output
TXC
Serial Port C
High (disabled)
PC3
Input
RXC
Pulled up on RCM3100
PC4
Output
TXB
Serial Port B
High (disabled)
PC5
Input
RXB
Pulled up on RCM3100
PC6
Output
TXA Programming Port
Serial Port A
High (disabled)
PC7
Input
RXA Programming Port
Pulled up on RCM3100
PD0–PD4
Output
Not used
High
PD5
Input
Not used
Pulled up on
Prototyping Board
PD6–PD7
Output
Not used
High
PE0–PE1
Output
Not used
High
PE2
Input
Not used
Pulled up on
Prototyping Board
PE3
Output
LCD device select
Low (disabled)
PE4
Output
IrDA speed select
Low (disabled)
PE5
Output
Not used
High
PE6
Output
External I/O strobe
High (disabled)
PE7
Output
Not used
High (disabled)
PF0–PF7
Input
Reserved for future use
Pulled up on
Prototyping Board
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