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Capture and Trigger Setup Chapter 4, Xgig TraceControl Capture Configuration
Xgig Analyzer User’s Guide 111
Destination Indicators
Destination indicators originate from a transition and indicate the direction of the flow to the
destination state. If the destination state is below the current state in the flow chart destination
indicator is on the right, otherwise it is on the left. If it is on the left “if / else if” is displayed on the
right. The destination indicator has the same color as the destination state and has a label with that
state’s identifier.
Transition Lines
Transition Lines connect transitions to their destination states. Each transition line is the same
color as its destination state.
TTL Selection
The TTL In and TTL Out selections allow you to trigger across devices. TTL Out is used to trigger
another Xgig device. TTL In allows the current Xgig device to be triggered by another Xgig
device. See
“Triggering Across Devices” on page 134 for more information.
Domain Triggered
The Domain Triggered box indicates that there may be another port pair that could trigger, and in
doing so, would trigger the current capture.
Post Trigger Fill
Post Trigger Fill defines where in the buffer the trigger should be located. For example, 25% post
fill tells the hardware to set the capture window where 3/4 of the buffer contains data that occurred
before the trigger and 1/4 contains the data that occurred after the trigger.
To set the post trigger fill:
1 Place the cursor in the Post Fill (%) field.
2
Use the arrow keys to select a post trigger fill percentage, or enter a value in the
Post Fill (%)
field.
The post trigger fill value increments corresponding to memory chunks of 512KB. For smaller
capture sizes, not all percentages are available; the post trigger fill value will round up or down so
the percentage fits on a memory boundary. For example, a 5MB capture can have a post trigger fill
value of 80% or 90%, but not 85%. 5% of the 5MB capture is 256KB, which is smaller than the
512KB limit for the post trigger fill increment.
Terminators
Terminators indicate the start and the end of the capture.
Capture Filter Editor
The Capture Filter Editor on the
Capture and Trigger Setup
tab is shown when you highlight a
state. Use the Capture Filter Editor to specify the particular types of frames, ordered sets, or
primitives you want to capture with the Xgig Protocol Analyzer.