Use Of Rabbit 3000 Parallel Ports - Rabbit Core RCM3700 User Manual

B.2.6 Use of Rabbit 3000 Parallel Ports
Table B-10 lists the Rabbit 3000 parallel ports and their use for the RCM3720 Prototyping
Board.
Table B-10. RCM3720 Prototyping Board Use of Rabbit 3000 Parallel Ports
Port I/O
PA0–PA7 Input
PB0 Output
PB1 Output
PB2–PB6 Output
PB7 Input
PC0 Output
PC1 Input
PC2 Output
PC3 Input
PC4 Output
PC5 Input
PC6 Output
PC7 Input
PD0 Output
PD1 Input
PD2 Input
PD3 Input
PD4–PD5 Output
PD6–PD7 Input
PE0–PE1 Output
PE2 Output
PE3 Input
PE4–PE5 Output
PE6 Input
PE7 Output
PF0 Output
PF1 Input
RabbitCore RCM3700 User's Manual
Use
Not used
CLKB, Serial Flash SCLK
CLKA Programming Port
Not used
External IA5, Switch S2
TXD RS-232
Serial Port D
RXD RS-232
TXC RS-232
Serial Port C
RXC RS-232
TXB Serial Flash
Serial Port B
RXB Serial Flash
TXA Programming Port
Serial Port A
RXA Programming Port
Ethernet RSTDRV
Ethernet BD5 (EESK)
Ethernet BD6 (EEDI)
Ethernet BD6 (EEDO)
Not used
Not used
Not used
Ethernet AEN
Not used
Not used
Serial Flash Select
Not used
Not used
Not used
Initial State
Pulled up (core module)
High
High
(when not driven by CLKA)
High
Pulled up (Proto Board)
High (set by drivers)
Pulled up (core module)
High (set by drivers)
Pulled up (core module)
High (set by drivers)
Pulled up (core module)
High (when not driven)
Pulled up (core module)
Pulled up (core module)
Set by Ethernet
Set by Ethernet
Set by Ethernet
High
Pulled up (core module)
High
High (driven by Ethernet)
Pulled up (core module)
High
Pulled up (core module)
High
High
Low
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