C868_02 Datasheet, PDF (49/244 Pages) Infineon Technologies AG – 8 - Bit CMOS Microcontroller

C868
On-Chip Peripheral Components
P1ALT
Port 1 Alternate Function Register
7
6
5
4
3
-
-
-
P1ALT[4:3]
r
r
r
rw
[Reset value: XXX00X00_B]
2
1
0
-
P1ALT[1:0]
r
rw
Field
P1ALT.1-0
P1ALT.4-3
-
Bits
[1:0]
[4:3]
[7:5],2
Typ Description
rw Port 1 Alternate Function Switch
0: The associated pin is a normal I/O. (default)
1: The associated pin is an alternate function. Please
see Table 4-2.
All the other bits in this register are reserved for the
future use.
r reserved;
returns ’0’ if read; should be written with ’0’;
P3ALT
Port 3 Alternate Function Register
7
6
5
4
3
P3ALT
rw
[Reset value: 00_H]
2
1
0
Field
P3ALT
Bits Typ Description
[7:0] rw Port 3 Alternate Function Switch
0: The associated pin is a normal I/O. (default)
1: The associated pin is an alternate function. Please
see Table 4-2.
User’s Manual
4-5
V 0.4, 2002-01