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Chapter 4 SCSI Commands
MODE SENSE (6) / (10) Command (1Ah / 5Ah)
DLT-S4 Interface Reference Guide
189
Table 107
SAS
Phy Control
and Discover Mode Subpage —
Field Descriptions
Field
Description
PS
Parameters Savable. Always set to 0.
SPF
SubPage Format. Always set to 1. Indicates that this page uses the sub_page
mode page format.
Page Code
Identifies the type of
MODE SENSE
page being transferred. A value of 19h
identifies this is as the Port Control Page.
SubPage Code
Identifies the type of
MODE SENSE
Subpage being transferred. A value of 01h
identifies this is as the SAS Phy Control and Discover Mode Subpage.
Page Length
Indicates the number of bytes in the page, excluding the 4 bytes that make up the
header.
Protocol Identifier
A value of 6h indicates that this mode page applies to an SAS SSP-specific mode
page (see the
Serial Attached SCSI – 1. 1 (SAS-1.1)
for specific SAS information).
Number of Phys
Indicates the Number of Phys. Always set to 1.
SAS Phy Mode
Descriptor
See
figure 100
.