Chapter 4 SCSI Commands
MODE SENSE (6) / (10) Command (1Ah / 5Ah)
DLT-S4 Interface Reference Guide
181
Logical Unit Control Page
(18h)
4
This page contains the logical unit control parameters (For Parallel SCSI,
see
figure 93
; for Fibre Channel, see
figure 94
; and for SAS, see
figure 95
).
Figure 93
Parallel SCSI
—
Logical Unit Control
MODE
SENSE
Page — Data Format
Table 101
Parallel SCSI
—
Logical Unit Control
MODE
SENSE
Page — Field
Descriptions
Bit
7
6
5
4
3
2
1
0
Byte
0
PS (0)
SPF (0)
Page Code (18h)
1
Page Length (06h)
2
Reserved
Protocol Identifier (1h)
3 — 7
Reserved
Field
Description
PS
Parameters Savable. Always set to 0.
SPF
SubPage Format. Always set to 0. Indicates that this page uses the page_0 page format.
Page Code
Identifies the type of
MODE SENSE
page being transferred. A value of 18h identifies
this as the Logical Unit Control page.
Page Length
Indicates the number of bytes in the page, excluding bytes 0 and 1.
Protocol
Identifier
A value of 1h indicates that this mode page applies to an SPI-5 compliant port (see the
SCSI Parallel Interface - 5
(SPI-5) standard).