Z8 Encore! XP® F08xA Series
Product Specification
42
PPUE[7:0]—Port Pull-up Enabled
0 = The weak pull-up on the Port pin is disabled.
1 = The weak pull-up on the Port pin is enabled.
Port A–D Alternate Function Set 1 Sub-Registers
The Port A–D Alternate Function Set1 sub-register (Table 24) is accessed through the Port
A–D Control register by writing 07Hto the Port A–D Address register. The Alternate
Function Set 1 sub-registers selects the alternate function available at a port pin. Alternate
Functions selected by setting or clearing bits of this register are defined in “GPIO Alternate
Functions” on page 32.
Alternate function selection on port pins must also be enabled as decribed in “Port A–D
Note:
Alternate Function Sub-Registers” on page 39.
Table 24. Port A–D Alternate Function Set 1 Sub-Registers (PxAFS1)
BITS
7
6
5
4
3
2
1
0
PAFS17
PAFS16
PAFS15
PAFS14
PAFS13
PAFS12
PAFS11
PAFS10
FIELD
RESET
R/W
0
0
0
0
0
0
0
0
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
If 07H in Port A–D Address Register, accessible through the Port A–D Control Register
ADDR
PAFS1[7:0]—Port Alternate Function Set 1
0 = Port Alternate Function selected as defined in Table 13 in the GPIO Alternate Functions
section.
1 = Port Alternate Function selected as defined in Table 13 in the GPIO Alternate Functions
section.
Port A–D Alternate Function Set 2 Sub-Registers
The Port A–D Alternate Function Set 2 sub-register (Table 25) is accessed through the
Port A–D Control register by writing 08Hto the Port A–D Address register. The Alternate
Function Set 2 sub-registers selects the alternate function available at a port pin. Alternate
Functions selected by setting or clearing bits of this register is defined in Table 13 in the
section “GPIO Alternate Functions” on page 32.
Alternate function selection on port pins must also be enabled as decribed in “Port A–D
Note:
Alternate Function Sub-Registers” on page 39.
Table 25. Port A–D Alternate Function Set 2 Sub-Registers (PxAFS2)
BITS
7
6
5
4
3
2
1
0
PAFS27
PAFS26
PAFS25
PAFS24
PAFS23
PAFS22
PAFS21
PAFS20
FIELD
PS024705-0405
P R E L I M I N A R Y
General-Purpose I/O
ZILOG [ ZILOG, INC. ]
