Motorola MPC533 Reference Manual page 984

Program Trace
22.3.5 Branch Trace Message Queueing
READI implements a queue 16 or 32 messages deep (depending on the silicon version) for
program trace, data trace, and ownership trace messages. Messages that enter the queue are
transmitted via the output auxiliary port in the order in which they are queued.
If multiple trace messages need to be queued at the same time,
program trace messages will have the highest priority unless
the data trace buffers are full, in which case the data trace
messages are given temporary higher priority than the program
trace messages.
22.3.6 BTM Timing Diagrams
MCKO
MSEO
MDO[7:0]
TCODE = 3
Number of Sequential Instructions since last taken branch = 72
MCKO
MSEO
MDO[7:0]
TCODE = 4
Number of Sequential Instructions since last taken branch = 4
Relative Address = 0x534
22-52
PRELIMINARY—SUBJECT TO CHANGE WITHOUT NOTICE
NOTE
Figure 22-34. Direct Branch Message
00000100 00000001
Figure 22-35. Indirect Branch Message
MPC533 Reference Manual
00000011 0001 0010
00110100 00000101
Don't care data
(idle clock)
00000000
Don't care data
(idle clock)
00000000
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