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Chapter 4 SCSI Commands
MODE SELECT (6) / (10) Command (15h / 55h)
DLT-S4 Interface Reference Guide
131
Figure 71
SAS
Phy Control
and Discover Mode Subpage —
Data Format
Table 80
SAS
Phy Control and
Discover Mode Subpage —
Field Descriptions
Bit
7
6
5
4
3
2
1
0
Byte
0
PS (0)
SPF (1)
Page Code (19h)
1
SubPage Code (01h)
2 — 3
(MSB)
Page Length (34h)
(LSB)
4
Reserved
5
Reserved
Protocol Identifier (6h)
6
Reserved
7
Number of Phys (1)
8 — 55
SAS Phy Mode Descriptor (see
figure 72
)
Field
Description
PS
Parameters Savable. Must be to 0.
SPF
SubPage Format. Must be to 1. Indicates that this page uses the sub_page mode
page format.
Page Code
Identifies the type of
MODE SELECT
page being transferred. A value of 19h
identifies this is as the Port Control Page.
SubPage Code
Identifies the type of
MODE SELECT
Subpage being transferred. A value of 01h
identifies this is as the SAS Phy Control and Discover Mode Subpage.