User’s Manual
29
Figure 7 shows the use of the Rabbit 4000 microprocessor ports in the RCM4200 modules.
Figure 7. Use of Rabbit 4000 Ports
The ports on the Rabbit 4000 microprocessor used in the RCM4200 are configurable, and
so the factory defaults can be reconfigured. Table 2 lists the Rabbit 4000 factory defaults
and the alternate configurations.
R
ABBIT®
4000
Port A
Port B
Port D
(RCM4210 only)
Port E
PA0PA7
PB2PB7
PE0PE7
PD0PD7
Watchdog
11 Timers
Clock Doubler
Slave Port
Real-Time Clock
RAM
Backup Battery
Support
Flash
Misc. I/O
PC4
PC5
Port C
(Serial Ports C & D)
Programming
Port
(Serial Port A)
A/D Converter
(Serial Port B)
PB1, PC6, STATUS
PC0, PC2
PC1, PC3
Serial Ports E & F
(RCM4210 only)
/RESET_OUT
/IORD
/IOWR
/RES_IN
PC7, /RES,
SMODE0, SMODE1
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