4.4.8
SET SUBWINDOW command
The following table shows the normal sequence of the SET SUBWINDOW command
when used with this scanner.
Step
Bus phase
1
BUS FREE
2
ARBITRATION
3
SELECTION
4
MESSAGE OUT
5
COMMAND
6
DATA OUT
7
STATUS
8
MESSAGE IN
9
BUS FREE
4 $ 56
Initiator operation
Verifies bus free
Obtains bus>usage
right
Selects target
Selects logical unit
Specifies SET
SUBWINDOW
(CDB)
Specifies
subwindow data
¨Æ
Target operation
Æ
Drives BSY signal
Æ
Æ
Sets subwindow
Æ
¨
Reports GOOD status
¨
Reports message
(Command Complete)
Releases BSY signal