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6. COMMAND SPECIFICATION
6. 08 MODE SENSE 1Ah
Bit
7
Byte
0
1
2
3
4
5
Unused (00b)
MODE SENSE provides a means for the drive to report its media, current and changeable configuration parameters to
the host. It is a complementary command to MODE SELECT.
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 shall not return
any block descriptors in the returned MODE SENSE data.
PCF:
The Page Control Field indicates the type of page parameter values to be returned to the Host as shown below.
Bit 7
Bit 6
0
0
0
1
1
0
1
1
6 - 50
SONY SDT-10000/SDT-11000 DDS Tape Drive
6
5
Logical Unit Number
PCF
Parameter Values
Description
Current Values
This is the normal default situation where the drive returns to the
host its current configuration. Page fields not supported are set to
zero by the drive.
Changeable Values
These are any values which a host 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.
The drive returns the default values of the mode parameters. Page
Default Values
field not supported are set to zero by the drive.
Not supported by the drive
Saved Values
Table 6-34: Page Control field values
4
3
Operation Code (1Ah)
Reserved
DBD
Page Code
Reserved
Allocation Length
Reserved
MODE SENSE
2
1
0
Reserved
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