4-33
4.4.7
SET WINDOW command
The following table shows the normal sequence of the SET WINDOW command when used with this scanner.
Table 4-16 SET WINDOW command
Step
Bus phase
Initiator operation
←
←→
→
Target operation
1
BUS FREE
Verifies bus free
2
ARBITRATION
Obtains bus-usage right
3
SELECTION
Selects target
→
Drives BSY signal
4
(MESSAGE OUT)
Selects logical unit
→
5
COMMAND
Specifies SET WINDOW (CDB)
→
Sets window
6
DATA OUT
Specifies window data
←
7
STATUS
←
Reports GOOD status
8
MESSAGE IN
←
Reports message
(Command Complete)
Release BSY signal
9
BUS FREE
4.4.7.1
SET WINDOW command: COMMAND phase (initiator
→
target)
The SET WINDOW command is used to set a window.
The CDB of this command is shown in the following illustration.