Xilinx ChipScope Pro User Manual

66 www.xilinx.com ChipScope Pro Software and Cores User Guide
UG029 (v14.3) October 16, 2012
Chapter 4: Using the ChipScope Pro Analyzer
many windows as possible with the defined samples per trigger. The trigger is always the
first sample in the window if N Samples is selected.
Windows
The Windows text field is only available when Window is selected in the Type combo box.
The number of windows is specified in this field and can be any positive integer from 1 to
the depth of the capture buffer.
Depth
The Depth combo box is only available when Window is selected in the Type combo box.
The Depth combo box defines the depth of each capture window. It is automatically
populated with valid selections when values are typed into the Windows text field. Only
powers of two are available.
Note: When the overall trigger condition consists of at least one match unit function that has a
counter that is set to either Occurring in at least n cycles or Lasting for at least n consecutive
cycles, the Window Depth or Samples Per Trigger setting cannot be less than eight samples. This is
due to the pipelined nature of the trigger logic inside the ILA core.
Position
The Position text field is only available when Window is selected in the Type combo box.
The Position field defines the position of the trigger in each window. Valid values are
integers from 0 to the depth of the capture buffer minus 1.
Samples Per Trigger
The Sample Per Trigger text field is only available when N Samples is selected in the Type
combo box. Samples per trigger defines how many samples to capture after the trigger
condition occurs. Valid values are any positive integer from 1 to the depth of the capture
buffer. The trigger mark always appears as sample 0 in the window. As many sample
windows as possible are captured, given the overall sample depth.
Note: When occurring in at least n cycles or occurring for at least n consecutive cycles is selected
for a match unit, and that match unit is a part of the overall trigger condition, the Window Depth or
Samples Per Trigger cannot be less than 8. This is due to pipeline effects inside the ILA core.
Storage Qualification Condition
The storage qualification condition is a Boolean combination of events that are detected by the
match unit comparators that are subsequently attached to the trigger ports of the core. The
storage qualification condition evaluates trigger port match unit events to decide whether
or not to capture and store each individual data sample. The trigger and storage
qualification conditions can be used together to define when to start (or finish) the capture
process and what data is captured, respectively.
The Storage Condition dialog box has a table of all the match units. Each match unit
occupies a row in the table. The Enable column indicates if that match unit is part of the
trigger condition. The Negate column indicates whether or not that match unit is
individually negated (Boolean NOT) in the trigger condition.
The storage qualification condition can be configured to capture all data, or it can be set up
to capture data that satisfies a Boolean AND or OR combination of all the enabled match
units. The overall Boolean equation can also be negated, selectable using the Negate
Whole Equation checkbox above the table. The resulting equation appears in the Storage
Condition Equation pane at the bottom of the window.

Xilinx ChipScope Pro Specifications

General

Brand	Xilinx
Model	ChipScope Pro
Category	Computer Hardware
Language	English