Viavi Xgig User Manual page 128

Chapter 4, Xgig TraceControl Capture Configuration
Capture Sideband Signal
This selection allows you to set up a PCIe signal to capture on. To trigger the analyzer on TTL
Input, check the TTL In check box outside the trigger state bubble. Also, a sideband cable is
connected from the interposer's External Trigger port to the TTL In port on the Xgig chassis.
Capture CLKREQ#
Capture PERST#
Capture PEWAKE#
Compress identical training frames in sequence
This option is for 16G FC traffic. Enabling this option allows compression into one rep-count
event for all identical training frames coming in sequence. The training pattern is discarded in this
case. Only the 32-bits of information is captured for each training frame instead of the full
36-bytes of Manchester data. You can use this option to significantly reduce the size of a
transmitter training trace. This option cannot be enabled if a Training Pattern template is used as a
capture filter in any state. When you use this option, TraceView's
32-bits of data per training frame instead of 36 bytes. However, the decodes in the
column are the same. This option is selected by default.
Data Compression Mode
This option is for PCIe traffic. It defines how the analyzer compresses non-frame data. The default
setting is to
•
Store each individual Dword
Captures the data without any compression.
•
Compress to a count of Dwords
Stores identical subsequent data as a repetition count.
• Compress to a count of Dwords including SKP, TS1 and TS2
Compresses the data to a repetition count as the previous setting but also compress to a single
count the SKP, TS1 and TS2 even if their data can vary.
Exclude duplicate UpdateFC DLLPs
When checked, the hardware filters out of the capture any duplicate UpdateFC DLLPs that are
repeated over time. The setting is set by default.
Exclude TS1/TS2, SKP and EIEOS when repeated TS1/TS2 are detected
When checked, the hardware filters out of the capture any duplicate TS1/TS2 ordered sets that are
repeated over time. Duplicate SKP and EIEOS ordered sets are also filtered out.
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- Sets Xgig Analyzer to capture the CLKRQ# signal transitions.
- Sets Xgig Analyzer to capture the CLKRQ# signal transitions.
- Sets Xgig Analyzer to capture the PEWAKE# signal transitions.
Compress to a count of Dwords
Capture and Trigger Setup
Inspector
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Xgig Analyzer User's Guide
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Interpretation