40 send diagnostic (1d), Table 217.send diagnostic (1d) – Hitachi ULTRASTAR 15K450 HUS154530VLF400 User Manual
Page 278
Hitachi Ultrastar 15K450 (FC-AL) Hard Disk Drive Specification
262
19.40 SEND DIAGNOSTIC (1D)
Table 222: SEND DIAGNOSTIC (1D)
The SEND DIAGNOSTIC command requests the drive to perform its self-diagnostic test or to perform a function based on a
page of information sent in a Data Out phase during the command.
•
PF (Page Format) bit set to one indicates the data sent by the Initiator conform to the page structure as specified in
SCSI standard. This bit is ignored by the Target if the SlfTst bit is set.
•
SlfTst set to one indicates that the device performs its default self-test. If SlfTst is one, the Function code field is
ignored. If SlfTst is set to zero, the action to perform is specified in Function code field.
Byte
Bit
7
6
5
4
3
2
1
0
0
Command Code = 1Dh
1
Function Code
PF
RSVD =0
SlfTst
Dev0fl
Unt0fl
2
Reserved = 0
3-4
(MSB) Parameter List Length
(LSB)
5
VU = 0
Reserved = 0
FLAG
LINK