Teledyne-lecroy USB File Based Decode Manual Uživatelský manuál stáhnout pdf (Strana 34)

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

Reference Manual

FormatValue, WordValue, and Bitmap

The structure of FormatValue, WordValue, and Bitmap entries is the same

as in a .req file. However, the output for all three is displayed in the Description

column of the descriptor information box. For example:

; Example1 description

Offset(2)={

FormatValue=This is the description for Example1

}

; Example2 description

Offset(4)={

WordValue={

0x00=This is the description for Example2

}

Additional Descriptor Keywords

In addition to the keywords used in the basic structure of a .dsc file, there are a few

more keywords specific to these files. They are described in this section.

BCD

Use BCD to set up decoding of a Binary-Coded Decimal. The only value for BCD

is TRUE:

BCD=TRUE

Now, with BCD set to TRUE, two conversion specifications can be used in a

FormatValue entry, so that both the first byte and the second byte of the Binary-

Coded Decimal can be displayed:

Figure 17: FormatValue, WordValue and Bitmap entries are displayed in

the Description column of the descriptor information box

1 2 ... 29 30 31 32 33 34 35 36

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Teledyne-lecroy USB File Based Decode Manual Uživatelský manuál Strana 34