Teledyne LeCroy USBTracer_Trainer - Users Manual - Manual (Page 129)

USB Protocol Suite User Manual Chapter 5: Reading a Trace
LeCroy Corporation
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5.34 Decoding Protocol-Specific Fields in
Transactions and Transfers
When transfers or transactions are displayed, the fields in setup transactions and in
control, interrupt, and Bulk transfers do not get decoded (by default) and are shown in
hexadecimal values. The exceptions are setup transactions and control transfers for
standard USB device requests, which are always decoded.
To show specific decoding for class- and vendor-specific device requests and endpoints,
you have to use the decoding association mechanism that is described in Chapter 9 on
decoding. When you have performed the association, you see the protocol-specific fields
of transfers and transactions decoded in the trace view.
5.35 Switch to Host Wire Adapter Segment View
A Host Wire Adapter Segment is one or more transfers between a PC and a host wire
adapter. To view host wire adapter segments, switch to the Host Wire Adapter Segment
trace viewing level.
To select the Host Wire Adapter Segment trace viewing level:
• Click on the toolbar.
OR
• Select View > HWA Segment Level.
OR
• Select Setup > Display Options to display the Display Options window, check
HWA Segment, and then click OK.