Teledyne-lecroy USB File Based Decode Manual Manual do Utilizador descarregar pdf (Página 32)

COMPUTER ACCESS TECHNOLOGY CORPORATION USB DESCRIPTOR DEFINITION (.DSC) FILES

Reference Manual

SubclassCode

This entry is used only in conjunction with a ClassCode entry. Its value is the

USB-assigned subclass code. This keyword was introduced specifically to support

the descriptor format extension adopted by the Audio device class. Any other class

or vendor descriptor specification based on this extension may utilize the

SubclassCode keyword as well.

AllOffsets

The AllOffsets keyword is used to specify the Offset values for all of the

requests described in the descriptor definition. The AllOffsets definition uses

the following format:

AllOffsets=

{

<Offset_value>=<Offset_name>

...

}

The value of <Offset_value> is the USB-assigned value, and is represented

numerically. It shows up in the Offset column of the descriptor information box.

<Offset_name> is the textual representation of the offset value. It also repre-

sents the offset name that will appear in the Field column of the displayed descriptor

information. For example:

Figure 16: The offset value and name is

displayed in the Offset and Field columns of the

descriptor information

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