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Programming Model
MSB
32
31
33
Field
RSTI
16
15
14
Field
RSTI
Addr
Figure 22-8. READI Upload/Download Information Register
RCPU
Nexus
Name
Bits
Bits
0:31
33:2
RWD
32
1
ERR
33
0
DV
ERR
0
0
1
1
ERR
0
1
0
1
22-16
PRELIMINARY—SUBJECT TO CHANGE WITHOUT NOTICE
30
29
28
27
26
0000_0000_0000_0000_0
13
12
11
10
9
RWD
000_0000_0000_0000
Table 22-12. UDI Bit Descriptions
The Read/Write Data Field is used to store data for read accesses and block write
accesses. It can contain three sizes of data. Refer to Table 22-13, Table 22-14 and
Table 22-9 for details.
The Error Field is used to determine the status of the read or write access. Refer to
Table 22-13 and Table 22-14 for details.
0 Read or write access has not been completed.
1 Read or write access has completed.
NOTE: The ERR field is read-only.
The Data Valid Field is used to determine the status of the read or write access. Refer
to Table 22-13 and Table 22-14 for details.
0 No error has occurred.
1 Access error occurred.
NOTE: The DV field is read-only.
Table 22-13. Read Access Status
DV
0
Read access has not yet completed
1
Read access has completed and no access error occurred
0
Access error occurred
1
Not allowed
Table 22-14. Write Access Status
DV
0
Write access has completed and no access error occurred
0
Write access error occurred (Error Message sent out)
1
Write access has not yet completed
1
Not allowed
MPC533 Reference Manual
25
24
23
22
RWD
8
7
6
5
0x10
Description
Status
Status
21
20
19
18
17
4
3
2
1
LSB
0
ERR DV
0
0
MOTOROLA
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