Freescale Semiconductor e200z3 Reference Manual page 403

Error information is messaged out in the format shown in
(5 bits)
Error Code (00010/00111/01000
10.8.2.4 Data Trace Synchronization Messages
A data trace write/read with synchronization message is messaged through the auxiliary port, provided
data trace is enabled, for the following conditions (see
• Initial data trace message after exit from system reset or whenever data trace is enabled
• Upon returning from a CPU low-power state
• Upon returning from debug mode
• After occurrence of queue overrun (can be caused by any trace message), provided data trace is
enabled
• After the periodic data trace counter has expired, indicating 255 data trace messages have occurred
without synchronization since the last with-synchronization message occurred
• Upon assertion of the event-in nex_evti_b pin, the first data trace message is a synchronization
message if the EIC bits of the DC1 register have enabled this feature.
• Upon data trace write/read after the previous DTM message was lost due to an attempted access to
a secure memory location (for SOC's with security)
• Upon data trace write/read after the previous DTM message was lost due to a collision entering the
FIFO between the DTM message and any of the following:
— watchpoint message
— ownership trace message
— branch trace message
Data trace synchronization messages provide the full address, without leading zeros, and ensure that
development tools fully synchronize with data trace regularly. Synchronization messages provide a
reference address for subsequent DTMs, in which only the unique portion of the data trace address is
transmitted. The format for data trace write/read with synchronization messages is as follows:
(1–64 bits)
Data Value
Figure 10-35. Data Write/Read with Synchronization Message Format
Freescale Semiconductor
(4 bits)
Source Process
Fixed length = 15 bits
Figure 10-34. Error Message Format
(1–32 bits)
Full Address
Maximum length = 109 bit; Minimum length = 15 bits
e200z3 Power Architecture Core Reference Manual, Rev. 2
Figure 10-34:
(6 bits)
TCODE (001000)
Table 10-25):
(3 bits) (4 bits)
Data Source
Size Process
Nexus3/Nexus2+ Module
(6 bits)
TCODE
(001101 or 001110)
10-37