Z8F0113 datasheet(64/245 Pages) ZILOG

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PS024315-1011

P R E L I M I N A R Y

GPIO Control Register Definitions

Z8 Encore! XP® F0823 Series

Product Specification

Port A–C Alternate Function Set 2 Subregisters

The Port A–C Alternate Function Set 2 Subregister (Table 29) is accessed through the Port

A–C Control Register by writing 08H to the Port A–C Address Register. The Alternate

Function Set 2 subregisters selects the alternate function available at a port pin. Alternate

Functions selected by setting or clearing bits of this register is defined in Table 15 in the

section the GPIO Alternate Functions section on page 34.

Table 29. Port A–C Alternate Function Set 2 Subregisters (PxAFS2)

Bit

Field

PAFS27

PAFS26

PAFS25

PAFS24

PAFS23

PAFS22

PAFS21

PAFS20

RESET

00H (all ports of 20/28 pin devices); 04H (Port A of 8-pin device)

R/W

R/WR/W

R/WR/WR/WR/WR/WR/W

Address

If 08H in Port A–C Address Register, accessible through the Port A–C Control Register

Bit

Description

[7:0]



PAFS2x

Port Alternate Function Set 2

0 = Port Alternate Function selected as defined in Table 15 on page 33; also see the GPIO

Alternate Functions section on page 34).

1 = Port Alternate Function selected as defined in Table 15.

Note: x indicates the specific GPIO port pin number (7–0).

Z8F0113 Datasheet(PDF) 64 Page - Zilog, Inc.