Motorola MPC533 Reference Manual page 988

Data Trace
22.4.2 Data Trace Message Formats
Data trace messages are of five types:
• Data write
• Data read
• Data write synchronization
• Data read synchronization
• Error message
22.4.2.1 Data Write Message
The data write message contains the data write value and the address of the target location,
relative to the previous data trace message.
The data write message has the following format:
[6 bits]
TCODE (5)
22.4.2.2 Data Read Message
The data read message contains the data read value and the address of the target location,
relative to the previous data trace message.
The data read message has the following format:
[6 bits]
TCODE (6)
22.4.2.3 Data Trace Synchronization Messages
A data trace synchronization message shall be transmitted via the auxiliary port (provided
data trace is enabled) for the following conditions:
• Initial data trace message upon exit of any system reset will be a synchronization
message.
• Upon exit of sleep, deep-sleep and low power down mode, the first data trace
message will be a synchronization message.
22-56
PRELIMINARY—SUBJECT TO CHANGE WITHOUT NOTICE
[1 to 25 bits]
Relative Address
Max Length = 63 bits
Min Length = 15 bits
Figure 22-43. Data Write Message Format
[1 to 25 bits]
Relative Address
Max Length = 63 bits
Min Length = 15 bits
Figure 22-44. Data Read Message Format
MPC533 Reference Manual
[8, 16, or 32 bits]
Data Value
[8, 16, 24, or 32 bits]
Data Value
MOTOROLA