User Manual

SCSI Commands Reference Manual, Rev. J 353
www.seagate.com Parameters for direct access devices
All Power Condition Transitions log page counters are saturating counters (see table 270). A count is incremented by one for
each transition (see table 272). The time in the transition at which the count is incremented is vendor specific.
If a LOG SELECT command attempts to change the value of any log parameter in the Power Condition Transitions log page, the
command shall be terminated with CHECK CONDITION status, with sense key set to ILLEGAL REQUEST and additional sense code
set to INVALID FIELD IN PARAMETER LIST.
PARAMETER LENGTH field
The PARAMETER LENGTH field shall be set as shown in Table 332 and specifies the length in bytes of the PARAMETER VALUE field that follows. If
the application client specifies a parameter length that results in the truncation of the PARAMETER VALUE field, the command shall be termi-
nated with CHECK CONDITION status, with the sense key set to ILLEGAL REQUEST, and the additional sense code set to INVALID FIELD IN
PARAMETER LIST.
PARAMETER VALUE field
The PARAMETER VALUE field contains a saturating counter as described in Table 270 for the corresponding parameter code value in the Power
Condition Transitions log parameter PARAMETER CODE field (see table 330).
Table 332 Power Condition Transitions log parameter format
Bit
Byte
7 6 5 4 3 2 1 0
0 (MSB)
PARAMETER CODE (see table 330)
1 (LSB)
2 PARAMETER CONTROL BYTE – binary format list log parameter (see 5.2.2.2.2.5)
3 PARAMETER LENGTH (04h)
4 (MSB)
PARAMETER VALUE. . .
7 (LSB)