User`s manual

User’s Manual 25
Figure 7 shows the use of the Rabbit 3000 microprocessor ports in the RCM3200 modules.
Figure 7. Use of Rabbit 3000 Ports
The ports on the Rabbit 3000 microprocessor used in the RCM3200 are configurable, and
so the factory defaults can be reconfigured. Table 2 lists the Rabbit 3000 factory defaults
and the alternate configurations.
R ABBIT
®
3000
Port A
Port B
Port D
(+Ethernet Port)
Port E
PA0PA7
PB0,
PB2PB7
PE0PE1,
PE3PE7
PD4PD5
/RESET
/IORD
/IOWR
Watchdog
11 Timers
Clock Doubler
Slave Port
Real-Time Clock
RAM
Backup Battery
Support
Flash
Port C
(Serial Ports B,C & D)
Programming
Port
(Serial Port A)
Ethernet
Port
4 Ethernet signals
PB1, PC6, STATUS
PC0, PC2, PC4
PC1, PC3, PC5
Port G
(Serial Ports E & F)
PG2, PG6
PG3, PG7
Port F
PF0PF7
PG0PG1,
PG4PG5
Port G
(+Serial Ports)
Misc. I/O
/RES
_
IN
PC7, /RES,
SMODE0, SMODE1