Reference Guide

Chapter 4 SCSI Commands
MODE SELECT (6) / (10) Command (15h / 55h)
DLT-S4 Interface Reference Guide 132
Figure 72 shows the SAS phy mode descriptor.
Figure 72 SAS Phy Mode
Descriptor
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. Must be to 1.
SAS Phy Mode
Descriptor
See figure 72
.
Bit
7 6 5 4 3 2 1 0
Byte
8 Reserved
9 Phy Indentifier
10 Reserved
11 Reserved
12 Reserved Attached Device Type Reserved
13 Reserved Negotiated Physical Link Rate
14 Reserved
Attached
SSP Initiator
Port
Attached
STP
Initiator
Port
Attached
SMP
Initiator
Port
Reserved
15 Reserved
Attached
SSP Target
Port
Attached
STP Target
Port
Attached
SMP Target
Port
Reserved
16 — 23 SAS Address
24 — 31 Attached SAS Address
Field Description