Nexus
MPC5565 Microcontroller Reference Manual, Rev. 1.0
24-90
Freescale Semiconductor
NOTE
If multiple trace messages need to be queued at the same time, watchpoint
messages will have the highest priority (WPM -> DTM).
24.14.5.4.3
Relative Addressing
The relative address feature is compliant with IEEE
®
-ISTO Nexus 5001-2003
and is designed to reduce
the number of bits transmitted for addresses of data trace messages. Relative addressing is the same as
described for the NZ6C3 in
Section 24.11.12.3.2, “ Relative Addressing
24.14.5.4.4
Data Trace Windowing
Data write/read messages are enabled via the RWT1(2) field in the data trace control register (DTC) for
each DTM channel. Data trace windowing is achieved via the address range defined by the DTEA and
DTSA registers and by the RC1(2) field in the DTC. All eDMA initiated read/write accesses that fall inside
or outside these address ranges, as programmed, are candidates to be traced.
24.14.5.4.5
System Bus Cycle Special Cases
24.14.5.5 Data Trace Timing Diagrams (8 MDO configuration)
Data trace timing for the NXDM is the same as for the NZ6C3. Refer to
Section 24.11.13.4, “ Data Trace
Timing Diagrams (Eight MDO Configuration)
.”
24.14.6 Watchpoint Support
The NXDM module provides watchpoint messaging via the auxiliary pins, as defined by IEEE
®
-ISTO
5001-2003.
Watchpoint messages can be generated using the NXDM defined internal watchpoints.
24.14.6.1 Watchpoint Messaging
Enabling watchpoint messaging is accomplished by setting the watchpoint messaging enable bit,
DC1[WEN]. Using the BWC1 and BWC2 registers, two independently controlled internal watchpoints
can be initialized. When a DMA access address matches on BWA1 or BWA2, a watchpoint message will
be transmitted.
Table 24-60. System Bus Cycle Special Cases
Special Case
Action
System bus cycle aborted (DABORT asserted)
Cycle ignored
System bus cycle with data error
Data Trace Message discarded
System bus cycle completed without error
Cycle captured and transmitted
System bus cycle is an instruction fetch
Cycle ignored
Содержание MPC5565
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Страница 577: ...Boot Assist Module BAM MPC5565 Microcontroller Reference Manual Rev 1 0 15 18 Freescale Semiconductor...
Страница 895: ...Deserial Serial Peripheral Interface DSPI MPC5565 Microcontroller Reference Manual Rev 1 0 19 72 Freescale Semiconductor...
Страница 973: ...Preface MPC5565 Microcontroller Reference Manual Rev 1 0 21 36 Freescale Semiconductor...
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Страница 1153: ...Calibration MPC5565 Microcontroller Reference Manual Rev 1 0 B 8 Freescale Semiconductor...