User`s manual

32 RabbitLink (EG2110)
C.1 RabbitLink Hardware Subsystems
Figure C-1 shows the Rabbit-based subsystems designed into the RabbitLink and shows
the parallel ports and signal lines they use on the Rabbit 2000 microprocessor.
Figure C-1. RabbitLink Subsystems
NOTE: PB0 is an output by default, but can be an input by removing jumper R58 and
adding jumpers R59 and R60.
C.1.1 Pinouts
Figure C-2 shows the pinouts for the RJ-45 Ethernet jack and the two programming headers
on the RabbitLink board.
Figure C-2. Pinouts for Ethernet Jack and Programming Headers
Port A
Port B
Port D
Port E
PA0
PB2
PB0
PB1
PB6
PB7
PC4PC5
PE5
A0A4
BUFEN
RESET
Data Lines
RAM
Flash
PC6PC7
PD0
PD1
PD2
PE1, PE6, PE7
DA0DA7
RabbitLink
CPU
(RABBIT 2000

)
Watchdog
Clock Doubler
Real-Time Clock
Address Lines
Programming
Out Port
Serial Port
(Port C)
Programming
In Port
Misc. Output
Misc. Input
Ethernet
Programming
Ports
J8
RXA
CLKA
/RESET
N.C.
SMODE0
1
3
5
7
9
2
4
6
8
10
GND
VCC
TXA
STATUS
SMODE1
PROG IN
J2
RJ-45 ETHERNET JACK
1. E_Tx+
2. E_Tx
3. E_Rx+
6. E_Rx
1
8
J9
TXB
CLKB
PA0
N.C.
PB6
1
3
5
7
9
2
4
6
8
10
GND
NC
RXB
PB2
PB7
PROG OUT