User Manual

SCSI Commands Reference Manual, Rev. J 394
www.seagate.com Parameters for direct access devices
5.3.10 Command Duration Limit A mode page (0Ah/03h)
The Command Duration Limit A mode page (see table 373) provides controls for command duration limit (see SAM-5) that are
applicable to all device types, for commands for which the REPORT SUPPORTEDOPERATION CODES command parameter data
CDLP field (see 3.34) indicates the Command Duration Limit A mode page. The mode page policy (see 3.9) for this mode page
should be per I_T nexus. The mode page policy may be shared. If a field in this mode page is changed while there is a command
already in the task set, then the new value of the field shall not apply to that command.
PS bit, SPF bit, PAGE CODE field, SUBPAGE CODE field, and PAGE LENGTH field
The parameters saveable (PS) bit, the subpage format (SPF) bit, the PAGE CODE field, the SUBPAGE CODE field, and the PAGE LENGTH field are
defined in 5.3.5 and shall be set as shown in table 411 for the Command Duration Limit A mode page.
Command duration limit descriptor fields
The command duration limit descriptor (see table 374) describes the command duration limit corresponding to the duration limit descriptor
value in the CDB (see appropriate command standard).
Table 373 Command Duration Limit A mode page
Bit
Byte
7 6 5 4 3 2 1 0
0 PS SPF (1b) PAGE CODE (0Ah)
1 SUBPAGE CODE(03h)
2 (MSB)
PAGE LENGTH (0020h)
3 (LSB)
4
Reserved. . .
7
Command duration limit descriptor list
8
Command duration limit descriptor (first) . . .
11
12
Command duration limit descriptor (second) . . .
15
. . . . . .
32
Command duration limit descriptor (last) . . .
35