Special options registers (psoraðposrd) -5, Psorx field descriptions -5 – Motorola MPC8260 User Manual
Page 961
MOTOROLA
Chapter 35. Parallel I/O Ports
35-5
Part IV. Communications Processor Module
PSOR bits are effective only if the corresponding PPARx[DDx] = 1 (a dedicated peripheral
function). Table 35-4 describes PSORx Þelds.
NOTE
If the corresponding PPARx[DDx] = 1 (conÞgured as a general-purpose pin) before
programming a PSORx or PDIRx bit, a pin might function for a short period as an unwanted
dedicated function and cause unknown behavior.
Bits
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
Field
SO0
1
SO1
1
SO2
1
SO3
1
SO4
SO5
SO6
SO7
SO8
SO9 SO10 SO11 SO12 SO13 SO14 SO15
Reset
0000_0000_0000_0000
R/W
R/W
Addr
0x10D08 (PSORA), 0x10D28 (PSORB), 0x10D48 (PSORC), 0x10D68 (PSORD)
Bits
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
Field
SO16 SO17 SO18 SO19 SO20 SO21 SO22 SO23 SO24 SO25 SO26 SO27 SO28 SO29 SO30 SO31
Reset
0000_0000_0000_0000
R/W
R/W
Addr
0x10D0A (PSORA), 0x10D2A (PSORB), 0x10D4A (PSORC), 0x10D6A (PSORD)
1
These bits are valid for PSORA and PSORC only
Figure 35-5. Special Options Registers (PSORAÐPOSRD)
Table 35-4. PSORx Field Descriptions
Bits
Name
Description
0Ð31
SOx
Special-option. Determines whether a pin conÞgured for a dedicated function (PPARx[DDx] = 1) uses
option 1 or option 2. Note that bits SO0ÐSO3 are valid for PSORA and PSORC only. Options are
described in Section 35.2, ÒPort Registers.Ó
0 Dedicated peripheral function. Option 1.
1 Dedicated peripheral function. Option 2.