Overview - Rabbit 6000 User Manual

10.1 Overview

Parallel Port C is a byte-wide port with each bit programmable for data direction and drive level. These are
simple inputs and outputs controlled and reported in the Port C Data Register (PCDR).
All the Parallel Port C pins have alternate output functions, and most of them can be used as inputs to vari-
ous on-chip peripherals.
The drive strength and slew rate can be individually controlled for each Parallel Port C pin. In addition, a
75 k pullup or pulldown resistor can be enabled on each pin.
Note that it is possible for either Flexible Interface Module to use any of the parallel ports. See Chapter 33
for more information.
Table 10-1. Parallel Port C Pin Alternate Output Functions
Pin Name
PC7
PC6
PC5
PC4
PC3
PC2
PC1
PC0
NOTE: I0-I7 are strobes for External I/O
Rabbit 6000 User's Manual
10. P
Alt Out 0 Alt Out 1
TXA I7
TXA I6
TXB I5
TXB I4
TXC I3
TXC I2
TXD I1
TXD I0
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ARALLEL
Alt Out 2 Alt Out 3
PWM3 SCLKC
PWM2 TXE
PWM1 RCLKE
PWM0 TCLKE
TIMER C3 SCLKD
TIMER C2 TXF
TIMER C1 RCLKF
TIMER C0 TCLKF
P C
ORT
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