User Manual

SCSI Commands Reference Manual, Rev. J 395
www.seagate.com Parameters for direct access devices
EXAMPLE – A duration limit descriptor value of 001b selects the command duration limit contained in the first command
duration limit descriptor, a duration limit descriptor value of 010b selects the command duration limit contained in the second
command duration limit descriptor, and a duration limit descriptor value of 111b selects the command duration limit contained
in the seventh command limit duration descriptor.
CDLUNIT field
The CDLUNIT field (see table 375) specifies the time units for this command duration limit descriptor.
COMMAND DURATION LIMIT field
A COMMAND DURATION LIMIT field set to a non-zero value specifies the command duration limit in units specified by the CDLUNIT field. A
COMMAND DURATION LIMIT field set to zero specifies that no command duration limit is specified by the command duration limit descriptor. If
the CDLUNIT field is set to 000b, the COMMAND DURATIONLIMIT field shall be ignored.
Table 374 Command Duration Limit A mode page
Bit
Byte
7 6 5 4 3 2 1 0
0 CDLUNIT Reserved
1 Reserved
2 (MSB)
COMMAND DURATION LIMIT
3 (LSB)
Table 375 CDLUNIT field
Code Description
000b
No duration limit is specified
100b
1 microsecond
101b
10 milliseconds
110b
500 milliseconds
All others
Reserved