Reference Guide

Chapter 4 SCSI Commands
MODE SENSE (6) / (10) Command (1Ah / 5Ah)
DLT-S4 Interface Reference Guide 159
Table 89 MODE SENSE
Command Descriptor Block —
Field Descriptions
Field Description
LLBAA Long LBA Accepted. Must be set to 0.
DBD Disable Block Descriptors. When set to 0, the drive returns the block descriptor
data. When set to 1, the drive does not return block descriptor information.
PC Page Control. Indicates the type of page parameter values the drive returns to
the host:
PC Type of Parameter Values
00b Report Current Values
01b Report Changeable Values
10b Report Default Values
11b Report Saved Values
Page Code Allows the host to select a specific page or all of the pages the drive supports.
SubPage Code Specifies the subpage to return. Set to FFh to return all subpages.
Allocation Length Specifies the number of bytes that the host has allocated for returned
MODE
SENSE
data. An Allocation Length of 0 indicates that the drive returns no
MODE SENSE data. This is not considered an error and the drive returns GOOD
status.