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A.4 Use of Rabbit 2000 Parallel Ports
Figure A-5 shows the Rabbit-based subsystems designed into the BL2000.
PC0–PC5
PC6–PC7
DA0–DA7
Table A-3 lists the Rabbit 2000 parallel ports and their use in the BL2000.
Port
PA0
PA1
PA2
PA3
PA4
PA5
PA6
PA7
PB0
PB1
PB2
User's Manual
PB0–
PA0–PA7
PB5
Port A
(OUT0–OUT7)
(IN6–IN10, CTRL)
R
Serial Ports
2000 ™
(Port C)
Real-Time Clock
Programming
Port
Watchdog
7 Timers
Data Lines
Slave Port
Clock Doubler
Backup Battery
RAM
Support
Figure A-5. BL2000 Rabbit-Based Subsystems
Table A-3. Use of Rabbit 2000 Parallel Ports
I/O
Output
OUT0/RELAY/LED_DS4
Output
OUT1/LED_DS5
Output
OUT2/LED_DS6
Output
OUT3/LED_DS7
Output
OUT4
Output
OUT5
Output
OUT6
Output
OUT7
Input
IN6
Input
CLKA
Input
IN7
PD2
PB6
PD3
PB7
Port B
Port D
(ADC, DAC, Eth)
Port E
ABBIT
(IN0–IN5
OUT8–OUT9)
Address Lines
I/O Control
Misc. Input
Flash
Signal
PD0
PD1
PD4–
PB7
PE2–PE7
PE0, PE1
A0–A18
IORD
IOWR
RESET
Output Function
State
Off
Off
Off
Off
Off
Off
Off
Off
N/A
N/A
N/A
65
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