Freescale Semiconductor MPC5565, Reference Manual

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Nexus
MPC5565 Microcontroller Reference Manual, Rev. 1.0
24-48 Freescale Semiconductor
Ownership trace information is messaged out in the following format:
Figure 24-27. Ownership Trace Message Format
24.11.11.3 OTM Error Messages
An error message occurs when a new message cannot be queued due to the message queue being full. The
FIFO will discard incoming messages until it has completely emptied the queue. After it is emptied, an
error message will be queued. The error encoding will indicate which types of messages attempted to be
queued while the FIFO was being emptied.
If only an OTM message attempts to enter the queue while it is being emptied, the error message will
incorporate the OTM only error encoding (00000). If both OTM and either BTM or DTM messages
attempt to enter the queue, the error message will incorporate the OTM and (program or data) trace error
encoding (00111). If a watchpoint also attempts to be queued while the FIFO is being emptied, then the
error message will incorporate error encoding (01000).
NOTE
The OVC bits within the DC1 register can be set to delay the CPU to
alleviate (but not eliminate) potential overrun situations.
Error information is messaged out in the following format (refer to Table 24-20 ):
Figure 24-28. Error Message Format
PROCESS
MSB LSB
1 2
SRC TCODE (000010)
3
6 bits 4 bits 32 bits
Fixed length = 42 bits
ECODE (00000 / 00111 / 01000)
MSB LSB
1 2
SRC TCODE (001000)
3
6 bits 4 bits 5 bits
Fixed length = 15 bits