Port Functionality; I/O Port Block Diagram - Intel 386 User Manual

Intel386™ EX EMBEDDED MICROPROCESSOR USER'S MANUAL
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16.1.1 Port Functionality

The function of a bi-directional port pin is controlled by the state of the Port Control Latch (Pn-
LTC). This is shown in Figure 16-2.
16-2
Internal Peripherals
P n DIR. x
P n LTC. x
P n PIN. x
Figure 16-1. I/O Port Block Diagram
P n CFG. x
1
P n . x
0
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