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6.Command Specification
6.8. MODE SENSE (6/10) 1Ah and 5Ah
Bit
7
Byte
0
1
2
PCF
3
4
5
Bit
7
Byte
0
1
2
PCF
3-6
7-8
9
The MODE SENSE (6/10) commands provide a means to report parameter of default, current and changeable
configuration parameters. They are complementary to MODE SELECT (6/10) commands. The 6-byte and 10-byte
commands can be interchanged.
The format of the data returned is different for the 6-byte and 10-byte commands. See the MODE SELECT (6/10)
commands for the mode header format differences.
LLBAA: The LLBAA function is not supported. This field must be ZERO. This field is defined for MODE SENSE 10
only.
If this field is not set to 0b for a MODE SENSE (10) command, the command terminates with CHECK CONDITION
status, the sense key set to ILLEGAL REQUEST, the ASC/ASCQ is set to INVALID FIELD IN CDB.
DBD: A Disable Block Descriptors (DBD) bit of ZERO indicates that the target may return ZERO or more block
descriptors in the returned MODE SENSE data at the target's discretion. A DBD bit of one specifies that the target
will not return any block descriptors in the returned MODE SENSE data.
PC: The Page Control field indicates the type of page parameter values to be returned to the initiator as shown
below.
Bit 7
Bit 6
Parameter Values
0
0
Current Values
0
1
Changeable Values
1
0
Default Values
1
1
Saved Values
Page Code: This allows the initiator to select any specific or all pages supported by the drive.
6-54
Table 6-51: Mode Sense (6) CDB Format
6
5
Reserved
Table 6-52: Mode Sense (10) CDB Format
6
5
Reserved
LLBAA (0)
Table 6-53: Page Control field values
This is the normal default situation where the drive returns to the
initiator its current configuration. Page fields not supported are set to
ZERO by the drive.
These are any values which a initiator may alter in a subsequent
MODE SELECT command. Any field that the drive allows to be
changed is set to one. Otherwise the field is set to ZERO.
These are the default values on power-up
Not supported by the drive
4
3
Operation Code (1Ah)
DBD
Page Code
Reserved
Allocation Length
Control
4
3
Operation Code (5Ah)
DBD
Page Code
Reserved
Allocation Length
Control
Description
SONY AIT-5 drive SDX-1100V series Ver.1.0
MODE SENSE
2
1
0
Reserved
2
1
0
Reserved
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