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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