User Manual

SCSI Commands Reference Manual, Rev. J 441
www.seagate.com Parameters for direct access devices
SAS PHY MODE DESCRIPTOR fields
A SAS phy mode descriptor shall be included for each phy in the SAS target device (not just the SAS target port), starting with the lowest num-
bered phy and ending with the highest numbered phy.
Table 413 defines the SAS phy mode descriptor.
Table 413 SAS phy mode descriptor
Bit
Byte
7 6 5 4 3 2 1 0
0 Reserved
1 PHY IDENTIFIER
2
Reserved
3
4 Reserved ATTACHED DEVICE TYPE Reserved
5 REASON NEGOTIATED PHYSICAL LINK RATE
6 Reserved
ATTACHED SSP
INITIATOR PORT
ATTACHED STP
INITIATOR PORT
ATTACHED SMP
INITIATOR PORT
Reserved
7 Reserved
ATTACHED SSP
TARGET PORT
ATTACHED STP
TARGET PORT
ATTACHED SMP
TARGET PORT
Reserved
8
SAS ADDRESS. . .
15
16
ATTACHED SAS ADDRESS. . .
23
24 ATTACHED PHY IDENTIFIER
25
Reserved. . .
31
32 PROGRAMMED MINIMUM PHYSICAL LINK RATE HARDWARE MINIMUM PHYSICAL LINK RATE
33 PROGRAMMED MAXIMUM PHYSICAL LINK RATE HARDWARE MAXIMUM PHYSICAL LINK RATE
34
Reserved. . .
41
42
Vendor specific
43
44
Reserved. . .
47