Teledyne-lecroy USB File Based Decode Manual Manual de usuario descargar pdf (Pagina 22)

COMPUTER ACCESS TECHNOLOGY CORPORATION USB REQUEST DEFINITION (.REQ) FILES

Reference Manual

Left-click on the Control field heading to access the Decode...Request command on

the context menu. Selecting the Decode...Request command opens the decoding

dialog window. For more information about displaying descriptor information,

please see USB Descriptor Definition (.dsc) Files on page 25.

Endian

Use Endian to specify whether bytes should be presented in little-endian or big-

endian order.

Bytes(2,3)={

Endian=Big

Name=Hub Change bits

Bitmap={

0=C_HUB_LOCAL_POWER

1=C_HUB_OVER_CURRENT

}

Alternatively, the Endian value could be set to Little, which is the default

value.

HIBYTE

Use HIBYTE in conjunction with LOBYTE in order to display both values in 2-byte

wValue and wIndex fields. HIBYTE refers to the Most Significant Byte. Here is an

example of its use:

wValue={

HIBYTE={

FormatValue=Cheese %d

}

LOBYTE={

FormatValue=, sliced %d

}

Here is sample output for the example when wValue equals 0x0102:

Length

Use Length to represent the length, in bytes, of the data to be decoded. A numeric

value may be used:

Figure 10: HIBYTE and

LOBYTE values displayed

1 2 ... 17 18 19 20 21 22 23 24 25 26 27 ... 35 36

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Teledyne-lecroy USB File Based Decode Manual Manual de usuario Pagina 22