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

B.1.9 Use of Rabbit 3000 Parallel Ports
Table B-6 lists the Rabbit 3000 parallel ports and their use for the RCM3700 Prototyping
Board.
Table B-6. RCM3700 Prototyping Board Use of Rabbit 3000 Parallel Ports
Port I/O
PA0–PA7 Output
PB0 Output
PB1 Output
PB2–PB5 Output
PB6 Output
PB7 Output
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 Output
PD5 Input
PD6–PD7 Input
PE0 Output
PE1 Output
PE2 Output
PE3 Input
PE4 Output
PE5 Output
RabbitCore RCM3700 User's Manual
Use
External ID0–ID7, LCD/keypad module
CLKB, A/D Converter SCLK
CLKA Programming Port
External IA0–IA3, LCD/keypad module
IA4, 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)
ATXB, A/D converter SDI
ARXB, A/D converter SDO
Not used
IrDA MD0
IrDA MD1
Ethernet AEN
Not used
IrDA FIR_SEL
RS-232 enable
Initial State
High (core module)
High (SCLK set by driver)
High (core module)
(when not driven by CLKA)
High
High (core module)
High
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 (set by driver)
Pulled up (core module)
Pulled up (core module)
Pulled up (Proto Board)
Pulled down (Proto Board)
High (driven by Ethernet)
Pulled up (core module)
Low (slow baud rate)
Pulled up (Proto Board)
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