Intel 8XC196K Series User Manual page 578

Table of Contents

x = 1, 2, 5, 6

Each pin of port x can operate in any of the standard I/O modes of operation: complementary output,

open-drain output, or high-impedance input. The port x I/O direction (P x _DIR) register determines the

I/O mode for each port x pin. The register settings for an open-drain output or a high-impedance input

are identical. An open-drain output configuration requires an external pull-up. A high-impedance input

configuration requires that the corresponding bit in P x _REG be set.

x = 1 (CA, J x )

x = 2 (CA, J x )

x = 5 (J x )

x = 6 (CA, J x )

x = 1, 2, 5, 6 (K x )

Table C-15. P x _DIR Addresses and Reset Values

Port x Pin y Direction

This bit selects the P x . y direction:

1 = input/open-drain output (input, output, or bidirectional)

0 = complementary output (output only)

Reset State: