Bus State Analysis
MMDS0508OM/D
84
Bus State Analysis
MOTOROLA
Selecting the
Trigger Mode
To select a mode, put an X in one of the nine mode fields in the bottom
half of the bus state analyzer setup screen.
Table 10
explains the
modes.
Table 10. Analyzer Modes
Mode
Description
Continuous: all
cycles
When you enter the ARM and GO commands, the trace
buffer begins storing data from first cycle. This continues
until execution arrives at a breakpoint, or until you enter the
DARM or STOP command.
Continuous: events
only
When you enter the ARM and GO commands, the trace
buffer begins storing data when data matches an event
definition. This continues until execution arrives at a
breakpoint, or until you enter the DARM or STOP
command.
Counted: all cycles
When you enter the ARM and GO commands, the trace
buffer begins storing data from the specified number from
first cycle. (A breakpoint can stop storage before the
analyzer stores the specified number of cycles, as can the
DARM or STOP command.)
Counted: events only
When you enter the ARM and GO commands, the trace
buffer begins storing data that match an event definition for
the specified number of cycles. (A breakpoint can stop
storage before the analyzer stores the specified number of
cycles, as can the DARM or STOP command.)
A+B+C+D
When you enter the ARM and GO commands, the trace
buffer begins storing data from the first cycle run. This
continues through the occurrence of event A, B, C, or D
(whichever is enabled); data storage ends after the
specified number of post-trigger cycles.
A+B
→
C+D
When you enter the ARM and GO commands, the trace
buffer begins storing data from the first cycle. This
continues through the occurrence of two events: A or B,
followed by C or D. Data storage ends after the specified
number of post-trigger cycles.
If you select this mode, you must enable event A, event B, or
both. You must enable event C, event D, or both.
Otherwise, the bus state analyzer never can be triggered.
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Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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