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d.
Table 4.11 VPD information: operation mode
Bit
7
Byte
0
Qualifier
1
2
3
4
0
5
0
6
7
C141-C009
Operation mode
This VPD information reports the IDD's current operation mode. The
format of this VPD information is shown in Table 4.11.
6
5
4
X'C0' (Page Code)
X'04' (Page Length)
0
0
0
0
0
0
X'00' (Spindle Motor Start Delay Timing)
X'00' (Reserved)
The values indicated in the "Qualifier" and "Device Type Code" fields in
byte 0 are the same as those in the previously mentioned standard
INQUIRY data. The "Page code" field in byte 1 indicates the page code
(X 'C0') of this VPD information itself. Also, the "Page length" field in
byte 3 indicates the length (byte length) after byte 4. This value has no
relationship to the specification in the "Transfer Byte Length" in the
CDB, but indicates the length of this VPD information and is always X
'04' (Total data length = 8 bytes).
−
UNTATN (UNIT ATTENTION Report Mode)
When the IDD is holding the Unit Attention condition, this specifies
methods of response to commands received from the INIT.
"1" (Report): Report the "CHECK CONDITION" status (SCSI
standard specifications) for commands other than the
INQUIRY and REQUEST SENSE commands.
"0" (Don't Report): Terminates all received commands normally
−
Spindle Motor Start Delay Timing
Indicates the delay of the spindle motor startup time. Note,
however, that SAS drives do not support the function for delayed
startup of the spindle motor and always report X'00.'
4.1 Control/Sense Commands
3
2
Device Type Code
X'00'
UNTATN
0
0
0
(the "CHECK CONDITION" status caused by
the UNIT ATTENTION condition is not
reported.)
1
0
0
0
0
0
4-15
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