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4-34
7 6 5 4 3 2 1 0
Operator code X'24'
Logical unit number (Reserved)
(Reserved)
(MSB)
Transfer length
(LSB)
Control byte
(a) TRANSFER LENGTH: Bytes 6 to 8
Specifies the number of window data bytes sent in the DATA OUT phase. A 0 means that no data
transferred; this situation is not considered an error.
If the number of bytes is not enough (less than 48) to set a single window, the scanner returns the
following error
Status: B'00001' (CHECK CONDITION) Sense key: X'5' (ILLEGAL REQUEST)
Sense key: X'5' (ILLEGAL REQUEST)
4.4.7.2 Window date: DATA OUT phase (initiator → target)
Window data specifies the details of a window. Window data contains a bead and one or more window
descriptor block. Each window descriptor block specifies the attributes of a window (size, position, sca
etc.).
If a target receives the SET WINDOW command when it already has window data, ..the target discards a
current window data and validates the newly received data.
(a) Header
Window data (header) is shown in the following illustration.
7 6 5 4 3 2 1 0
(MSB)
(LSB)
Window descriptor block length: Bytes 6 and 7
Window descriptor block length
Byte 0
1
2
5
6
7
8
9
Reserved
Byte 0
5
6
7