Table of Contents
Advertisement
INQUIRY
6.2. INQUIRY 12h
Bit
7
Byte
0
1
Logical Unit Number
2
3
4
5
Unused (00b)
INQUIRY tells the drive to send information regarding the drive parameters to the initiator.
CmdDT: The Command support data ( CmdDT ) bit of one specifies that the drive returns the optional support data
specified by the operation code field.
EVPD: The Enable Vital Product Data (EVPD) bit of one specifies that the drive returns the optional vital product
data specified by the page code field.
If both the CmdDT and EVPD bits are zero, the drive returns the standard INQUIRY data. If the page or operation
code field is not zero when both CmdDT and EVPD are zero, the drive returns a CHECK CONDITION status with an
ILLEGAL REQUEST Sense Key.
If the CmdDT and EVPD bits are one, the drive returns a CHECK CONDITION status with an ILLEGAL REQUEST
Sense Key.
When the EVPD bit is set to one, the drive returns vital product data that is specified in the page or operation code
field. If the page or operation code field is reserved or not implemented by the target, the target shall terminate the
command with a CHECK CONDITION status. The sense key shall be set to ILLEGAL REQUEST.
When the Cmd DT bit is set to one,the page or operation field specifies the SCSI operation code for which the drive
shall return support data.
Allocation Length: This specifies the maximum number of bytes that the initiator has allocated for returned Inquiry
data. An Allocation Length of ZERO indicates that no Inquiry data is transferred. This condition is not considered an
error. The drive will terminate the DATA IN phase when Allocation Length bytes have been transferred or when all
available Inquiry data have been transferred to the initiator, whichever is less.
INQUIRY will return a BUSY status only when the target cannot return the requested Inquiry data. If an INQUIRY is
received from an initiator with a pending UNIT ATTENTION condition (before the drive reports CHECK CONDITION
status), the target will perform the INQUIRY and will not clear the UNIT ATTENTION condition. The drive returns the
standard INQUIRY data as described below.
SONY AIT-2 Turbo drive SDX-550V series Ver.1.0
6
5
4
Operation Code (12h)
Page or Operation Code
Allocation Length
3
2
Reserved
Reserved
Reserved
6.Command Specification
1
0
CmdDT
EVPD
Flag
Link
6-3
Advertisement
Table of Contents
