Qorivva MPC5xxx/SPC5xx Debugger and NEXUS Trace
101
©1989-2021 Lauterbach GmbH
SYStem.Option NoDebugStop
Disable JTAG stop on debug events
Default: OFF.
On-chip debug events that cause a debug interrupt can be configured to cause one of two actions. If a JTAG
debugger is used, the CPU is configured to stop for JTAG upon these debug events.
If this option is set to ON, the CPU will be configured to not stop for JTAG, but to enter the debug interrupt,
like it does when no JTAG debugger is used.
Enable this option if the CPU should not stop for JTAG on debug events, in order to allow a target application
to use the debug interrupt. Typical usages for this option are run-mode debugging (e.g. with
t32server/gdbserver) or setting up the system for a branch trace via LOGGER (trace data in target RAM) or
INTEGRATOR.
SYStem.Option NoJtagRdy
Do not evaluate JTAG_RDY signal
The JTAG_RDY pin is an output of the CPU to signal the debugger when memory accesses, done via the
NEXUS block, are finished. Memory accesses via the NEXUS block are possible with the NEXUS debugger
and trace, but also with the JTAG-only debugger. The existence of the JTAG_RDY signal depends on
processor type and package size.
If this option is OFF (default), the debugger will use the JTAG_RDY signal for memory accesses via the
NEXUS block. If the option is ON, the debugger will ignore JTAG_RDY signal.
If the used processor type does not provide JTAG_RDY in any package size (e.g. MPX551X), the debugger
will automatically set this option. If availability of the signal depends on the package size, or if the signal is
available but not connected, use this option to configure the debugger manually.
In Software since October 2007, the debugger will automatically probe the JTAG_RDY pin. On targets
without JTAG_RDY signal, the JTAG_RDY pin of the debug connected should be connected to GND. If the
JTAG_RDY pin is left unconnected, use SYStem.Option NOJTAGRDY ON to prevent problems with probing
this signal.
Format:
SYStem.Option NoDebugStop
[
ON
|
OFF
]
Format:
SYStem.Option NoJtagRdy
[
ON
|
OFF
]
