Inquiry Command
48 T10000: Interface Reference Manual August 2016
Inquiry Command
The Inquiry command returns information about the type and capabilities of a SCSI
device.
Notes:
• The Inquiry command returns 74 bytes of data. If the allocation length is less
than 74 bytes, the data is truncated.
• The Inquiry command returns check condition status only when the requested
data cannot be returned. This command will not clear any pending unit
attention conditions.
TABLE 3-12 Inquiry Command
Byte
Bit
76543210
0 Operation Code (12h)
1 Reserved CmdDt EVPD
2 Page Code
3
thru
4
(MSB)
Allocation Length
(LSB)
5 Control Byte
Parameter Value
CmdDt: Command support Data 0 = Do not return command support data
EVPD: Enable Vital Product Data 0 = Return normal inquiry data
1 = Return Vital Product Data
Page Code EVPD page to return
Allocation Length Specifies the maximum length of inquiry data to return
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