Z8F0113HJ005EG Datasheet, PDF (63/245 Pages) Zilog, Inc. – High-Performance 8-Bit Microcontrollers

Z8 Encore! XP^® F0823 Series
Product Specification
48
Port A–C Alternate Function Set 1 Subregisters
The Port A–C Alternate Function Set1 Subregister (Table 28) is accessed through the Port
A–C Control Register by writing 07H to the Port A–C Address Register. The Alternate
Function Set 1 subregisters selects the alternate function available at a port pin. Alternate
Functions selected by setting or clearing bits of this register are defined in “GPIO Alter-
nate Functions” on page 34.
Note: Alternate function selection on port pins must also be enabled as described in the Port A–
C Alternate Function Subregisters section on page 43.
Table 28. Port A–C Alternate Function Set 1 Subregisters (PAFS1x)
Bit
Field
RESET
R/W
Address
7
6
5
4
3
2
1
0
PAFS17 PAFS16 PAFS15 PAFS14 PAFS13 PAFS12 PAFS11 PAFS10
00H (all ports of 20/28 pin devices); 04H (Port A of 8-pin device)
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
If 07H in Port A–C Address Register, accessible through the Port A–C Control Register
Bit
Description
[7:0]
PAFS1x
Port Alternate Function Set to 1
0 = Port Alternate Function selected as defined in Table 15 (see the GPIO Alternate Functions
section on page 34).
1 = Port Alternate Function selected as defined in Table 15 (see the GPIO Alternate Functions
section on page 34).
Note: x indicates the specific GPIO port pin number (7–0).
PS024315-1011
PRELIMINARY
GPIO Control Register Definitions