Fujitsu 600C manual INQUIRY command COMMAND phase initiator → target, 10 INQUIRY command, Step

Models: 600C

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If the 3rd party reservation option is not supported, setting this bit to 1 causes the target to return the following error;

Status key: B'0000I'(CHECKCONDITION)

Sense key: X~5'(ILLEGAL REQUEST)

This scanner does not support the 3rd party reservation option.

(b)TPID (third party device ID): Byte 1 This scanner ignores TPID.

4.4.3INQUIRY command

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

Table 4-10 INQUIRY command

Step

Bus phase

Initiator operation

←→

Target operation

 

 

 

 

 

 

 

 

 

 

1

BUS FREE

Verifies bus free

 

 

2

ARBITRATION ON

Obtains bus-usage right

 

 

3

SELECTION

Selects target

 

 

 

 

 

Drives BSY signal

 

 

 

 

 

4

MESSAGE OUT

Selects logical unit

 

5

COMMAND

Specifies INQUIRY (CBD)

 

6

DATA IN

 

Reports inquiry data

7

STATUS

 

Reports GOOD status

8

MESSAGE IN

 

Reports message (Command Complete

 

 

 

 

Releases BSY signal

 

 

 

 

 

9

BUS FREE

 

 

 

4.4.3.1INQUIRY command: COMMAND phase (initiator target)

The INQUIRY command checks information regarding a target and logical unit.

The CDB of this command is shown in the following illustration.

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Fujitsu 600C INQUIRY command COMMAND phase initiator → target, 10 INQUIRY command, Step, Bus phase, Target operation