Table B-5. Prototyping Board Use of Rabbit 3000 Parallel Ports (continued)
Port
PE7
PF0
PF1–PF3
PF4–PF7
PG0
PG1
PG2
I/O
Output
Input
Input
Output
Input
Input
Input
Use
Motor driver B clock pulse
SPI, serial flash, quadrature decoder
Quadrature decoder
Motor 1–4 control
Switch S1
Switch S2
TXF RS-232
Initial State
High (disabled)
High
High
Low (disabled)
High
High
High (RS-232 disabled)
Serial Port F
PG3
PG4
PG5
PG6
Input
Output
Output
Input
RXF RS-232
Motor driver A enable
Motor driver B enable
TXE RS-232
High (RS-232 disabled)
High (disabled)
High (disabled)
High (RS-232 disabled)
Serial Port E
PG7
Input
RXE RS-232
High (RS-232 disabled)
* Not used with RCM3360/RCM3370.
User ’s Manual
95
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