Data Type Codes:

00h(Image), 80h(Pixel Size),

 

81h(Detected Paper Information)

The transfer data type distinguishes between the different types of data which may be transferred between the initiator and the target. The types of transfers are specified in Table 3.61. Data Type Code and Data Type Qualifier are commonly used with SEND command.

Table 3.61 Data Type Codes

Code

Description

Command

 

 

 

00h

Image

READ

 

 

 

01h

Vendor Specific

 

 

 

 

02h

Halftone Mask

SEND

03h

Gamma Function

SEND

 

 

 

04h - 7Fh

Reserved

 

 

 

 

80h - FFh

Vendor specific

 

80h

Pixel Size

READ

 

 

 

81h

Detected Paper Information

READ

 

 

 

others

Reserved

 

Data Type Qualifier:

The data type qualifier field provides a means to differentiate data transfers of the same data type code. The values used in this field are vendor specific. This scanner uses this field for Image Data as follows.

Byte 4: Reserved

Byte 5: Window Identifier

Strictly speaking, SCAN command is used to specify Window Identifier but we used this field SCAN command can be omitted from scanning sequence.

For the other data type code, data type qualifier field is reserved.

INTERFACE

M3099GX/GH OEM Manual

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