Mode Select (6)
Julyl 2017 Command Set 71
SAS Phy Mode Descriptor Data
TABLE 4-33 SAS Phy Mode Descriptor Data
Byte
Bit
76543210
0 Reserved (00h)
1 Phy Identifier
2 Reserved (00h)
3 Reserved (00h)
4 RSVD Attached Device Type Reserved (0)
5 Reserved Negotiated Physical Link Rate
6
Reserved
Attach
SSP
Init Port
Attach
STP
Init Port
Attach
SMP
Init Port
RSVD
7
Reserved
Attach
SSP
Tgt Port
Attach
STP
Tgt Port
Attach
SMP
Tgt Port
RSVD
8 to 15 (MSB) SAS Address
(LSB)
16 to 23 (MSB) Attached SAS Address
(LSB)
24 Attached Phy Address
25 to 31 Reserved (00h)
32
Programmed Minimum Physical Link Rate Hardware Minimum Physical Link Rate
33
Programmed Maximum Physical Link Rate Hardware Maximum Physical Link Rate
34 to 41 Reserved (00h)
42 to 43 (MSB) Vendor Specific
(LSB)
44 to 47 Reserved (00h)
Serial Attached SCSI Phy Mode Descriptor Data Definitions:
PS The Parameters Saveable bit is set to 0.
Phy Identifier A unique identifier is returned for each Phy.
Attached Device Type This field indicates the device type attached to this Phy:
000b = No device attached
001b = SAS device
010b = Expander device
011b = Expander device compliant with a previous version of the SAS standard