Achronix Speedster22i Snapshot - Manual (Page 14)

Figure 6: Snapshot Debugger Tool view
a. Select the Download tab from the GUI
b. Specify the correct pod name in the “Specify Pod Name” box.
c. Match the “Monitor Channel Width” size (drop-down box) to the Monitor_ch size
that is connected to the snap_shot_core module inside the RTL.
d. Select either “Trigger1” or “Trigger 2” or “Trigger 3”, depending on how many
trigger conditions must be met before data is captured. For each of the trigger
conditions, enter the desired matching pattern and masking sequence (don’t cares)
e. Set the Frequency to match the usr_clk constraint set in the SDC file.
f. Snapshot is now ready to be triggered. Select the “Arm” button, and the Snapshot
debugging tool will begin to analyze the design, wait for the trigger conditions to be
matched, and display the captured results to the “Snapshot.log” file in the GUI or
VCD file in the waveform GUI.
In the Snapshot Debugger GUI, there are several options including “JTAG Scan Chain”,
“Trigger”, “Monitor Channel Width”, “Pre_store”, “Select Using AND”, and “Select Using
OR”, “Arm”, and “Cancel” to specify or customize the data logging mechanism. These
options are described below.
14 UG016, September 22, 2014