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