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9 read command – FUJITSU SCANPARTNER 600C User Manual

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4.4.8.3 ADF sequence

Read on ADF

Read on FB

(Load object)

(Unload object)

Note

If the document is shorter than the window area specified by the SET WINDOW command, the deficient portion is
supplemented by white data. The deficient portion is supplemented so that the data covers the entire specified window
area and is transferred.

4.4.9 READ command

The following table shows the normal sequence of the READ command when used with this scanner.

Table 4-21

Step

Bus phase

Initiator operation

←→

Target operation

1

BUS FREE

Verifies bus free

2

ARBITRATION

Obtains bus-usage right

3

SELECTION

Selects target

Drives BSY signal

4

MESSAGE OUT

Selects logical unit

5

COMMAND

Specifies READ (CDB)

Reads document

6

DATA IN

Transfer image data

7

STATUS

Reports GOOD status

8

MESSAGE IN

Reports message (Command Complete)
Releases BSY signal

9

BUS FREE

OBJECT POSITION command

READ command

READ command

OBJECT POSITION command