Motorola MPC8260 User Manual
35-4
MPC8260 PowerQUICC II UserÕs Manual
MOTOROLA
Part IV. Communications Processor Module
35.2.4 Port Pin Assignment Register (PPAR)
The port pin assignment register (PPAR) is cleared at system reset.
Table 35-2 describes PPARx Þelds.
35.2.5 Port Special Options Registers AÐD (PSORAÐPSORD)
Figure 35-5 shows the port special options registers (PSORx).
Bits
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
Field DD0
1
DD1
1
DD2
1
DD3
1
DD4
DD5
DD6
DD7
DD8
DD9 DD10 DD11 DD12 DD13 DD14 DD15
Reset
0000_0000_0000_0000
R/W
R/W
Addr
Bits
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
Field DD16 DD17 DD18 DD19 DD20 DD21 DD22 DD23 DD24 DD25 DD26 DD27 DD28 DD29 DD30 DD31
Reset
0000_0000_0000_0000
R/W
R/W
Addr
0x10D06 (PPARA), 0x10D26 (PPARB), 0x10D46 (PPARC), 0x10D66 (PPARD)
1
These bits are valid for PPARA and PPARC only
Figure 35-4. Port Pin Assignment Register (PPARAÐPPARD)
Table 35-3. PPAR Field Descriptions
Bits
Name
Description
0Ð31
DDx
Dedicated enable. Indicates whether a pin is a general-purpose I/O or a dedicated peripheral pin.
Note that bits DD0ÐDD3 are valid for PPARA and PPARC only.
0 General-purpose I/O. The peripheral functions of the pin are not used.
1 Dedicated peripheral function. The pin is used by the internal module. The on-chip peripheral
Note that bits DD0ÐDD3 are valid for PPARA and PPARC only.
0 General-purpose I/O. The peripheral functions of the pin are not used.
1 Dedicated peripheral function. The pin is used by the internal module. The on-chip peripheral
function to which it is dedicated can be determined by other bits such as those is the PDIR.