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Signal Interface
Clock
0
1
2
3
4
5
6
7
8
22.2.2.6.2 Example of Direct Branch Message
Table 22-24 is an example of the minimum transmission of any message containing a
variable length field (three clocks). The example uses a 4-bit output port.
Note that T0, and I0 are the least significant bits where:
Tx = TCODE number (fixed)
Ix = Number of sequential instructions (variable)
During clock 3, the tool should ignore data on MDO signals.
Clock
1
2
3
22.2.2.7 Non-Temporal Ordering of Transmitted Messages
Trace messages sent out may not be in the sequence they actually occurred. The traces are
monitored on the internal buses and these traces are captured as they occur and are sent out
in the order they were captured and processed.
BTMs are in sequence and DTMs are in sequence, however, temporal order of DTMs
interleaved with BTMs may not be accurate with regard to logical flow of code.
22-36
PRELIMINARY—SUBJECT TO CHANGE WITHOUT NOTICE
Table 22-23. Indirect Branch Message
MDO[3:0]
3
2
1
0
X
X
X
X
T3
T2
T1
T0
I1
I0
T5
T4
I5
I4
I3
I2
0
0
I7
I6
A3
A2
A1
A0
A7
A6
A5
A4
0
0
0
0
T3
T2
T1
T0
NOTE
Table 22-24. Direct Branch Message
MDO[3:0]
3
2
1
0
T3
T2
T1
T0
I1
I0
T5
T4
0
0
0
0
MPC533 Reference Manual
MSEO
1
Idle
1
Idle (or end of last
message)
0
Start Message
0
Normal Transfer
0
Normal Transfer
1
End Packet
0
Normal Transfer
1
End Packet
1
End Message
0
Start Message
MSEO
1
Idle
0
Start Message
1
End Packet
1
End Message
MOTOROLA
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