Fujitsu MCE3064AP, MCF3064AP, MCE3130AP manual REQUEST SENSE command, 95 Request sense data

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4.6.15REQUEST SENSE command

 

 

 

 

Table 4.94

REQUEST SENSE command

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Bit

7

 

6

 

5

 

4

 

3

2

1

0

Byte

 

 

 

 

 

 

 

 

 

 

 

 

0

 

 

 

 

 

 

Operation Code (03h)

 

 

 

 

 

 

 

 

 

 

 

 

 

1

 

Logical Unit Number

 

 

 

 

Reserved

 

 

 

 

 

 

 

 

 

 

 

 

 

 

2-3

 

 

 

 

 

 

 

Reserved

 

 

 

 

 

 

 

 

 

 

 

 

 

 

4

 

 

 

 

 

 

Allocation Length

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

5-11

 

 

 

 

 

 

 

Reserved

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

The REQUEST SENSE command transfers sense data to the host. Sense data indicates detailed error information on the command whose error was reported previously. If no error command was reported, SENSE KEY indicates NO SENSE.

When issuing the REQUEST SENSE command to detect the device status, first issue the TEST UNIT READY command, then issue REQUEST SENSE.

Allocation Length indicates the length of sense data to be transferred in bytes. If Allocation Length is 0, the command transfers no data and ends normally.

The sense data format is shown in Table 4.95.

Table 4.95 Request sense data

Bit

7

6

5

 

4

3

 

2

 

1

0

Byte

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

0

Valid

 

 

 

Error Code (70h or 71h)

 

 

 

 

 

 

 

 

 

 

 

 

 

1

 

 

 

 

Reserved (00h)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

2

 

Reserved (0h)

 

 

 

 

 

Sense Key

 

 

 

 

 

 

 

 

 

 

 

 

3-6

 

 

 

 

Information

 

 

 

 

 

 

 

 

 

 

 

 

 

7

 

 

 

Additional Sense Length (18h)

 

 

 

 

 

 

 

 

 

 

 

 

 

8-11

 

 

 

Command-Specific Information

 

 

 

 

 

 

 

 

 

 

 

 

 

 

12

 

 

 

 

Additional Sense Code

 

 

 

 

 

 

 

 

 

 

 

 

 

13

 

 

 

Additional Sense Code Qualifier

 

 

 

 

 

 

 

 

 

 

 

 

 

 

14

 

 

 

 

Reserved (00h)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

15-17

 

 

 

 

Sense-key specific

 

 

 

 

 

 

 

 

 

 

 

 

 

 

18-31

 

 

 

 

Additional Sense Bytes

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

4 - 62

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Fujitsu MCE3064AP, MCF3064AP, MCE3130AP manual REQUEST SENSE command, 95 Request sense data