NXP Semiconductors PXN2020, Reference Manual, Page: 1253 / 1376

Nexus Development Interface (NDI)
PXN20 Microcontroller Reference Manual, Rev. 1
Freescale Semiconductor 36-103
Figure 36-80. Nexus Debug Classifications
The PXN20 supports the Class 2+ and Class 3 debug features listed in Table 36-68
These debug capabilities are available at room temperature (25° C) and high temperature (125° C) when
the PXN20 is at maximum speed.
Table 36-68. Debug Requirements
Feature Class 1 Class 2 Class 2+ Class 3 Class 3+ Class 4
Static debug X X X X X X
Set breakpoints/watchpoints X X X X X X
Watchpoint messaging X X X X X X
Ownership trace — X X X X X
Program trace (BTM) — X X X X X
Port replacement — optional — optional optional optional
Data trace (write only) — — — X X X
Dynamic memory read/write — — X X X X
Data trace (read/write) — — — optional optional optional
Data acquisition — — — optional optional optional
Memory substitution — — — — — X
Complex triggering — — X — X X
External memory substitution — — — — — optional
Optional
feature
Static Debug
r/w regs & mem
start/stop processor
enter/exit debug mode
Set break-/watchpoints
Watchpoint messaging
Ownership trace
Program Trace Port replacement
Data trace (write only)
Dynamic memory r/w
Data trace (read/write)
Data acquisition
Complex triggering
Memory substitution Ext. mem. substitution
Class 3
Class 4
Class 2
Class 1
Mandatory
feature
Optional
feature
Static Debug
r/w regs & mem
start/stop processor
enter/exit debug mode
Set break-/watchpoints
Watchpoint messaging
Ownership trace
Program Trace Port replacement
Data trace (write only)
Dynamic memory r/w
Data trace (read/write)
Data acquisition
Complex triggering
Memory substitution Ext. mem. substitution
Class 3
Class 4
Class 2
Class 1
Mandatory
feature