User’s Manual
69
A.4 Use of Rabbit 2000 Parallel Ports
Figure A-6 shows the Rabbit 2000 parallel ports.
Figure A-6. BL2100 Rabbit-Based Subsystems
Table A-3 lists the Rabbit 2000 parallel ports and their use in the BL2100.
Table A-3. Use of Rabbit 2000 Parallel Ports
Port
I/O
Signal
Output Function State
PA0
Input
IN16
Pulled up
PA1
Input
IN17
Pulled up
PA2
Input
IN18
Pulled up
PA3
Input
IN19
Pulled up
PA4
Input
IN20
Pulled up
PA5
Input
IN21
Pulled up
PA6
Input
IN22
Pulled up
PA7
Input
IN23
Pulled up
PB0
Input
DAC_ADC_SDO
Pulled up
PB1
Input
Not Used
Pulled up
PB2
Input
ADC_EOC
Driven by A/D converter
PB3
Input
Not Used
Pulled up
R
ABBIT
2000
Port A
Port B
(
+
synch Serial Port B)
Port D
(
+
Serial Port B)
Port E
PA0PA7
PB0, PB2,
PB4, PB5 PB7
PE0PE1,
PE7
PD0PD1,
PD5
A0A3
IORD
IOWR
D0D7
/RESET
Data Lines
Address Lines
I/O Control
Watchdog
7 Timers
Clock Doubler
Slave Port
Real-Time Clock
RAM
Backup Battery
Support
Flash
Port C
(
+
Serial Ports C & D)
Programming
Port
(Serial Port A)
Ethernet
Port
Misc. I/O
4 Ethernet signals
2 LED outputs
PC6 + 1 more output
PB1, PC7, RES_IN
+ 2 more inputs
PC0, PC2
PC1, PC3
PD3PD4
PE4PE5
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