User Manual

SCSI Commands Reference Manual, Rev. J 446
www.seagate.com Parameters for direct access devices
Table 418 defines the enhanced phy control mode descriptor.
PHY IDENTIFIER field
The PHY IDENTIFIER field indicates the phy identifier (see SPL-4) of the phy for which information is being returned.
DESCRIPTOR LENGTH field
The DESCRIPTOR LENGTH field contains the length in bytes that follow in the descriptor and shall be set to the value defined in table 418.
The fields in the enhanced phy control mode descriptor not defined in this subclause are defined in the SMP DISCOVER response (see SPL-4).
These fields shall not be changeable with the MODE SELECT command.
PROGRAMMED PHY CAPABILITIES field
The PROGRAMMED PHY CAPABILITIES field indicates the SNW-3 phy capabilities bits that are going to be transmitted in the next link reset
sequence containing SNW-3 as defined in SPL-3 Section 5.7.
CURRENT PHY CAPABILITIES field
The CURRENT PHY CAPABILITIES field indicates the outgoing SNW-3 phy capabilities bits transmitted in the last link reset sequence as defined
in SPL-4. If the last link reset sequence did not include SNW-3 or was a SATA link reset sequence, then the CURRENT PHY CAPABILITIES field shall
be set to 00000000h.
Table 418 Enhanced phy control mode descriptor
Bit
Byte
7 6 5 4 3 2 1 0
0 Reserved
1 PHY IDENTIFIER
2 (MSB)
DESCRIPTOR LENGTH (0010h)
3 (LSB)
4
PROGRAMMED PHY CAPABILITIES. . .
7
8
CURRENT PHY CAPABILITIES. . .
11
12
ATTACHED PHY CAPABILITIES. . .
15
16
Reserved
17
18 Reserved
NEGOTIATED
SSC
NEGOTIATED PHYSICAL LINK RATE
19 Reserved
HARDWARE
MUXING
SUPPORTED