Teledyne LeCroy USB Protocol Suite User Manual (Voyager_Advisor T3_Mercury) - Manual (Page 199)

USB Protocol Suite User Manual 199
General Options Teledyne LeCroy Corporation
11. Repeat the previous steps for any additional endpoints you would like to map.
12. To retain a mapping from trace to trace DURING an application session, select the
Keep Across Recordings checkbox.
13. Click OK.
8.3 General Options
Commands are transferred on USB using special control transfers called USB Device
Requests. The Analyzer can decode Device Requests as they are defined in the USB
specifications and various Device Class and Vendor specifications.
Each USB Device Request is sent using a Control Transfer. Each Control Transfer starts with
a SETUP transaction.
8.3.1 Decoding USB Device Requests
To decode a USB Device Request:
1. Right‐click the Control Transfer field or the SETUP field of the USB Device Request to
display the USB Device Request menu:
Figure 8.7: USB Device Request Dialog
Note: The menus shown in this section are context‐sensitive. You may see slightly different menus.
2. To refresh decoding, click Refresh Decoding for this Trace File. Use this option to
reanalyze all transactions.
3. To use the previous decoding, click Load most recent decoding mapping.
This option loads the most recent mapping of endpoints/requests to decoding types
that was done on a previous trace. If the endpoints of the new trace are the same as
the last one mapped, the mappings are applied to the current trace. This saves the
user from having to constantly apply the mapping to a new trace every time the
application is restarted and a new trace created.