Z-World EG2110, User Manual

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User’s Manual 27
A
PPENDIX
C. S
UBSYSTEMS
This appendix describes the principal subsystems for the RabbitLink.
• Serial Communication
•
Memory
• Power Supplies
•
Reset Generator
C.1 RabbitLink Hardware Subsystems
Figure C.1.0-1 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.1.0-1 RabbitLink Subsystems
NOTE: PB0 is an output by default, but can be an input by removing jumper R58
and adding jumpers R59 and R60.
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
(R
ABBIT 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