Fujitsu 600C READ command, ADF sequence, Step, Bus phase, Initiator operation, Target operation

Models: 600C

1 95
Download 95 pages 10.46 Kb
Page 74
Image 74
4.4.8.3ADF sequence

4.4.8.3ADF sequence

Read on ADF

Read on FB

OBJECT POSITION command

(Load object)

READ command

OBJECT POSITION command

(Unload object)

Note

READ command

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.

4.4.9READ 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

 

 

 

4-46

Page 74
Image 74
Fujitsu 600C manual READ command, ADF sequence, Step, Bus phase, Initiator operation, Target operation