Teledyne LeCroy USB Chief - File Based Decode Manual - Manual (Page 24)

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C OMPUTER A CCESS T ECHNOLOGY C ORPORATION USB R EQUEST D EFINITION (. REQ ) F ILES
Reference Manual
See “ Bitmap ” on page 11 for another example of its use.
EndpointData Definitions
In addition to the AllRequests entry and the corresponding Request(...)
entries, a request definition file can have a set of EndpointData entries. An
EndpointData entry is used to define decoding for a class- or vendor-specific
data structure that can be transferred on USB using an Interrupt or Bulk endpoint,
according to a specific protocol. An example of this is the Hub and Port Change
Bitmap structure that can be transferred on the Interrupt endpoint (called Status
Change endpoint) according to Hub class protocol.
EndpointData entries contain Data definitions, which are preceded by some
global definitions for Caption , EndpointDirection , EndpointId ,
EndpointType , MaxPacketSize and MaxTransferSize . The basic
structure of an EndpointData entry can be found on page 6.
Caption
Use Caption to create an identifying string for the EndpointData decoding
definition. It will appear when the mouse is positioned over the endpoint type/
direction field. For example:
Caption=Hub Status Change Endpoint
Figure 13: Displayed Caption definition