User Manual

SCSI Commands Reference Manual, Rev. J 443

www.seagate.com Parameters for direct access devices

HARDWARE MAXIMUM PHYSICAL LINK RATE field

The HARDWARE MAXIMUM PHYSICAL LINK RATE field indicates the maximum physical link rate supported by the phy. The values are defined in

table 347. If the phy is a virtual phy, this field should be set to the maximum physical link rate supported by the expander device.

MAXIMUM PHYSICAL LINK RATE field

MAXIMUM PHYSICAL LINK RATE field are defined in the SMP DISCOVER function (see SAS-3). These fields shall not be changeable with MODE

SELECT.

PROGRAMMED MINIMUM PHYSICAL LINK RATE field and PROGRAMMED MAXIMUM PHYSICAL LINK RATE field

The PROGRAMMED MINIMUM PHYSICAL LINK RATE field and PROGRAMMED MAXIMUM PHYSICAL LINK RATE field are defined in the SMP PHY

CONTROL function (see SPL-3 Section 9.4.3.28) for accesses with MODE SELECT commands and in the SMP DISCOVER function (see SPL-3 Sec

tion 9.4.3.10) for accesses with MODE SENSE commands.

Table 415 lists the PROGRAMMED MINIMUM and MAXIMUM PHYSICAL LINK RATE field values.

Table 414 The HARDWARE MINIMUM & MAXIMUM PHYSICAL LINK RATE field values

Code Description

0h to 7h Reserved

8h 1.5 Gbps

9h 3.0 Gbps

Ah 6.0 Gbps

Bh 12.0 Gbps

Ch to Fh Reserved for future physical link rates

Table 415 The PROGRAMMED MINIMUM and MAXIMUM PHYSICAL LINK RATE field values