![Freescale Semiconductor MPC5553 Reference Manual Download Page 1094](http://html1.mh-extra.com/html/freescale-semiconductor/mpc5553/mpc5553_reference-manual_23306551094.webp)
MPC5553/MPC5554 Microcontroller Reference Manual, Rev. 5
Freescale Semiconductor
25-55
Figure 25-42. Data Read Message Format
NOTE
For the e200z6 based CPU, the doubleword encoding (data size
= 0b000)
will indicate a doubleword access and will be sent out as a single data trace
message with a single 64-bit data value.
25.11.13.2.3 DTM Overflow Error Messages
An error message occurs when a new message cannot be queued due to the message queue being full. The
FIFO will discard incoming messages until it has completely emptied the queue. After it is emptied, an
error message will be queued. The error encoding will indicate which types of messages attempted to be
queued while the FIFO was being emptied.
If only a data trace message attempts to enter the queue while it is being emptied, the error message will
incorporate the data trace only error encoding (00010). If both OTM and data trace messages attempt to
enter the queue, the error message will incorporate the OTM and data trace error encoding (00111). If a
watchpoint also attempts to be queued while the FIFO is being emptied, then the error message will
incorporate error encoding (01000).
NOTE
The OVC bits within the DC1 register can be set to delay the CPU in order
to alleviate (but not eliminate) potential overrun situations.
Error information is messaged out in the following format:
Figure 25-43. Error Message Format
25.11.13.2.4 Data Trace Synchronization Messages
A data trace write/read with sync. message is messaged via 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 exiting 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
without-sync
data trace messages
have occurred since the last
with-sync
message occurred
DATA
msb
lsb
2
3
4
U-ADDR
DSZ
SRC
5
4 bits
1
TCODE (000110)
3 bits
1-32 bits
1-64 bits
6 bits
Max length = 109 bits; Min length = 15 bits
DATA
msb
lsb
2
3
4
U-ADDR
DSZ
SRC
5
4 bits
1
TCODE (000110)
3 bits
1-32 bits
1-64 bits
6 bits
Max length = 109 bits; Min length = 15 bits
Summary of Contents for MPC5553
Page 5: ...MPC5553 MPC5554 Microcontroller Reference Manual Rev 5 2 Freescale Semiconductor...
Page 21: ...MPC5553 MPC5554 Microcontroller Reference Manual Rev 5 xvi Freescale Semiconductor...
Page 47: ...MPC5553 MPC5554 Microcontroller Reference Manual Rev 5 1 26 Freescale Semiconductor...
Page 163: ...MPC5553 MPC5554 Microcontroller Reference Manual Rev 5 4 20 Freescale Semiconductor...
Page 179: ...MPC5553 MPC5554 Microcontroller Reference Manual Rev 5 5 16 Freescale Semiconductor...
Page 561: ...MPC5553 MPC5554 Microcontroller Reference Manual Rev 5 13 38 Freescale Semiconductor...
Page 615: ...MPC5553 MPC5554 Microcontroller Reference Manual Rev 5 14 54 Freescale Semiconductor...
Page 707: ...MPC5553 MPC5554 Microcontroller Reference Manual Rev 5 17 68 Freescale Semiconductor...
Page 755: ...MPC5553 MPC5554 Microcontroller Reference Manual Rev 5 18 48 Freescale Semiconductor...
Page 873: ...MPC5553 MPC5554 Microcontroller Reference Manual Rev 5 19 118 Freescale Semiconductor...
Page 984: ...MPC5553 MPC5554 Microcontroller Reference Manual Rev 5 Freescale Semiconductor 21 41...
Page 985: ...MPC5553 MPC5554 Microcontroller Reference Manual Rev 5 21 42 Freescale Semiconductor...
Page 1019: ...MPC5553 MPC5554 Microcontroller Reference Manual Rev 5 22 34 Freescale Semiconductor...
Page 1129: ...MPC5553 MPC5554 Microcontroller Reference Manual Rev 5 25 90 Freescale Semiconductor...