Motorola MPC533 Reference Manual page 1004

Read/Write Access
The error message has the following format:
Figure 22-59. Error Message (Read/Write Access Error) Format
22.5.8.2 Invalid Message
An error message is sent out when an invalid message is received by READI. The error
code within the error message indicates that an invalid TCODE was detected in the
auxiliary input messages by the signal input formatter. Refer to Table 22-20.
The error message has the following format:
Figure 22-60. Error Message (Invalid Message) Format
If the TCODE is valid, then READI will expect that the correct number of packets have
been received and no further checking will be performed. If the number of packets received
by READI is not correct, READI response is not deterministic.
22.5.8.3 Invalid Access Opcode
An error message is sent out when an invalid access opcode is received by READI. The
error code within the error message indicates that an invalid access opcode was detected in
the auxiliary input messages by the signal input formatter. Refer to Table 22-20.
The error message has the following format:
Figure 22-61. Error Message (Invalid Access Opcode) Format
22-72
PRELIMINARY—SUBJECT TO CHANGE WITHOUT NOTICE
[6 bits]
TCODE (8) Error Code (0b00011)
Length = 11 bits
[6 bits]
TCODE (8) Error Code (0b00100)
Length = 11 bits
NOTE
[6 bits]
TCODE (8) Error Code (0b00101)
Length = 11 bits
MPC533 Reference Manual
[5 bits]
[5 bits]
[5 bits]
MOTOROLA