READI Module
MPC561/MPC563 Reference Manual, Rev. 1.2
Freescale Semiconductor
24-47
Figure 24-33. Relative Address Generation and Re-Creation
24.8.3
Queue Overflow Program Trace Error Message
A trace overrun error occurs when a trace message cannot be queued due to the queue being full, provided
program trace is enabled.
The overrun error causes the message queue to be flushed, and an error message to be queued. The error
code within the error message indicates that either a program/data/ownership trace overrun error has
occurred or that only a program trace overrun has occurred. The next BTM will be a synchronization
message. Refer to
.
The error message has the following format:
Figure 24-34. Error Message (Queue Overflow) Format
24.8.4
Branch Trace Message Operation
24.8.4.1
BTM Capture and Encoding Algorithm
BTM is accomplished by capturing instruction fetch information from the U-bus and instruction execution
information from the RCPU (VF and VFLS signals), and combining them to generate program trace
messages.
Previous Address (A1) = 0x0003 FC01, New Address (A2) = 0x0003 F365
A1 = 0000 0000 0000 0011 1111 1100 0000 0001
A2 = 0000 0000 0000 0011 1111 0011 0110 0101
Address Message (M1) = 1111 0110 0100
M1 = 0000 0000 0000 0000 0000 1111 0110 0100
A1
A1 = 0000 0000 0000 0011 1111 1100 0000 0000
M1 = 0000 0000 0000 0000 0000 1111 0110 0100
A2 = 0000 0000 0000 0011 1111 0011 0110 0101
Address Re-Creation:
Message Generation:
M1 = A2
+
+
+
TCODE (8)
Error Code (0b0 0000,
Length = 11 bits
[5 bits]
[6 bits]
0b0 0001, 0b0 0010,
0b0 0111)
Summary of Contents for MPC561
Page 84: ...MPC561 MPC563 Reference Manual Rev 1 2 lxxxiv Freescale Semiconductor...
Page 144: ...Signal Descriptions MPC561 MPC563 Reference Manual Rev 1 2 2 46 Freescale Semiconductor...
Page 206: ...Central Processing Unit MPC561 MPC563 Reference Manual Rev 1 2 3 62 Freescale Semiconductor...
Page 302: ...Reset MPC561 MPC563 Reference Manual Rev 1 2 7 14 Freescale Semiconductor...
Page 854: ...Time Processor Unit 3 MPC561 MPC563 Reference Manual Rev 1 2 19 24 Freescale Semiconductor...
Page 968: ...Development Support MPC561 MPC563 Reference Manual Rev 1 2 23 54 Freescale Semiconductor...
Page 1144: ...Internal Memory Map MPC561 MPC563 Reference Manual Rev 1 2 B 34 Freescale Semiconductor...
Page 1212: ...TPU3 ROM Functions MPC561 MPC563 Reference Manual Rev 1 2 D 60 Freescale Semiconductor...
Page 1216: ...Memory Access Timing MPC561 MPC563 Reference Manual Rev 1 2 E 4 Freescale Semiconductor...