Digi JACKRABBIT BL1800 - Manual (Page 70)

66 Jackrabbit (BL1800)
The ports on the Rabbit 2000 microprocessor used in the Jackrabbit are configurable, and
so the factory defaults can be reconfigured. Table A-3 lists the Rabbit 2000 factory
defaults and the alternate configurations.
Table A-3. Jackrabbit Pinout Configurations
Pin
Rabbit 2000
Factory Default
Alternate Use Jackrabbit Use
PA0–PA7 Parallel I/O
Slave port data bus SD0–
SD7
PB0 Input Serial port clock CLKB
PB1 (CLKA) is
connected to J3
(programming port)
PB1 Input Serial port clock CLKA
PB2 Input Slave port write /SWR
PB3 Input Slave port read /SRD
PB4 Input
Slave port address lines
SA1–SA0
PB5 Input
PB6 Output
PB7 Output
Slave port attention line
/SLAVEATTN
PC0 Output TXD
Connected to RS-485 IC
Tx input
PC1 Input RXD
Connected to RS-485 IC
Rx output
PC2 Output TXC
Connected to RS-232 IC
Tx input
PC3 Input RXC
Connected to RS-232 IC
Rx output
PC4 Output TXB
Connected to RS-232 IC
Tx input
PC5 Input RXB
Connected to RS-232 IC
Rx output
PC6 Output TXA
Connected to
programming port
PC7 Input RXA