Table 6-2: Mode Sense Command Field Values - Spectra Logic Spectra 2k Develop Manual

Table 6-2: Mode Sense Command Field Values

Field Location
Field Name
Byte
DBD
(Disable Block 01
Descriptors)
Page Control 02
Page Code 02
Allocation
04
Length
If all mode pages are requested, the library returns 54 bytes of mode sense data to the
initiator, structured as follows:
• 4 bytes of parameter list header data
• 20 bytes of element address assignments
• 4 bytes of transport geometry descriptors
• 16 bytes of device capabilities parameters
• 10 bytes of vendor unique parameters
Chapter 6. Mode Sense—1Ah
Values
Meaning
Allowed
Bit
The library does not return block descriptors even if requested to
3 0 or 1 do so. This is not an error condition. It simply returns a block
0h
Requests changeable parameters. The requested mode pages are
1h returned, but rather than parameter values, bits are set to 1 if
7-6
2h
Requests saved values. If a page has not been saved, default values
3h
3Fh
1Dh
5-0 1Eh
1Fh
00h
Specifies the number of bytes the initiator allocates for data
returned. Zero indicates no inquiry data is to be transferred; this
condition is not considered an error. The library terminates the
All 00-FFh
specified by the allocation length field or all of the available mode
parameter data, whichever is less. The data length for the standard
descriptor length of zero.
Requests current mode parameter values.
changeable or 0 if not.
Requests default values.
are returned.
Requests the library return all available mode pages.
Requests element address assignment page only.
Requests transport geometry parameters page only.
Requests device capabilities page only.
Requests vendor-specific page only.
data in phase when it transfers either the number of bytes
mode parameters returned by the library is 54 bytes (36h).
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