Table 121 Mode Sense Command 6-Byte Command Descriptor Block - Field Descriptions - Quantum LTO 2 User Manual

Table 121 MODE SENSE
Command 6-Byte Command
Descriptor Block — Field
Descriptions
Field Bytes
0
Operation
Code
1
Ignored
Logical
Unit
1
DBD
2
PC
2
Page Code
LTO-2 SCSI Interface Guide
Bits Description
The Operation Code for the 6-byte version of
5-7
The LUN field is vestigial from the SCSI-1 standard and is ignored.
3
0 = Return the block descriptor in the
1 = Disable Block Descriptors (DBD).
NOTE: When the DBD is 1, the Block Descriptor Length in the
parameter header is 0.
6-7
Page Control specifies the type of values to be returned.
00b = Report current values.
01b = Report changeable values. Any bit that can be changed by
MODE SELECT
10b = Report default values. Returns the power-up, or reset, values.
11b = Report saved values. Returns the power-up, or reset, values.
0-5
The Page Code selects the page or pages to be returned by the drive.
00h = Return only the Parameter List Header/Block Descriptor
02h = Return the Disconnect/Reconnect Page
0Ah = Return the Control Mode Page
0Fh = Return the Data Compression Control Page
10h = Return the Device Configuration Page
1Ch = Return the Information Exceptions Page
21h = Return the Drive Capabilities Page
22h = Return the Interface Control Page
3Fh = Return all available pages in ascending order starting from
page 02h
is set to 1; otherwise, the bits are set to 0.
Chapter 2 SCSI Commands
MODE SENSE Command
MODE SENSE
data.
MODE SENSE
is 1Ah.
152