User`s manual

User’s Manual 135
A.4 Use of Rabbit 2000 Parallel Ports
Figure A-5 shows the Rabbit 2000 parallel ports.
Figure A-5. OP7200 Rabbit-Based Subsystems
Table A-3 lists the Rabbit 2000 parallel ports and their use in the OP7200.
Table A-3. Use of Rabbit 2000 Parallel Ports
Port I/O Signal Notes
PA0 Input IN00
Pulled up to Vcc
PA1 Input IN01
Pulled up to Vcc
PA2 Input IN02
Pulled up to Vcc
PA3 Input IN03
Pulled up to Vcc
PA4 Input IN04
Pulled up to Vcc
PA5 Input IN05
Pulled up to Vcc
PA6 Input IN06
Pulled up to Vcc
PA7 Input IN07
Pulled up to Vcc
PB0 Input SS_CLK
Pulled up to Vcc
PB1 Input Programming Port Clock
Pulled up to Vcc
PB2 Input SS_CS
Pulled up to Vcc
PB3 Input SS_Mode
Pulled up to Vcc
PB4 Input Touchscreen status
Pulled up to Vcc
PB5 Input ADC_SD0
Pulled up to Vcc
PB6 Output Not Used High
PB7 Output Microprocessor Bad LED High
Port A
Port B
(+synch Serial Port B)
Port D
(+Serial Port B)
Port E
PA0PA7
PB0, PB2,
PB4, PB5 PB7
PD0PD1,
PD5
A0A3
IORD
IOWR
D0D7
/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
PD2PD4
PE0PE7
RABBIT
®
2000