Teledyne LeCroy Summit T28 PCIe Multi-lane Protocol Analyzer User Manual - Manual (Page 200)

Teledyne LeCroy Using the CATC Trace Navigator
188 Summit T28 PCI Express Multi‐Lane Protocol Analyzer User Manual
Figure 10.17: Flow Control Display
If the trace includes Flow Control initialization, PETracer detects the amount of available
credits based on the values advertised in InitFC packets. If the InitFC packets are not in
the trace, the amount of available credits can be set using the FC Credit Setup dialog (see
the following screen capture). Select View > FC Credits Setup... displays the FC Credit
Setup dialog (see the following screen capture).
For each virtual channel that is present in the trace you need to specify the amount of
available credits before the beginning of the trace. You can also specify the values of
credit fields for UpdateFC packets before the beginning of the trace. If the values of the
UpdateFC credit fields are different than the values in the first UpdateFC packet, Flow
Control tracking view will show that the first UpdateFC packet is releasing appropriate
amount of credits. By default, PETracer sets these values to match the first UpdateFC
packets in the trace.
Figure 10.18: Flow Control Setup Dialog
10.8 Using the CATC Trace Navigator
The CATC Trace Navigator is a tool for navigating within the CATC Trace. It allows you to
view the location of errors and triggers in a CATC Trace and to narrow the range of traffic
on display. It also allows you to quickly jump to any point in the CATC Trace.