Scanner Interface
ARBITRATION phase
bus settle |
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delay |
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| BSY |
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SCSI SEL
DB
bus set | arbitration delay | bus clear delay | |
delay | + bus settle delay | ||
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BSY
∇¤
bus free delay
ID7 SEL
DB(7)
bus clear delay bus set delay
BSY
∇¤
bus free delay
ID3 SEL
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| arbitration delay | |
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| BSY |
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| ∇¤ |
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| bus free | ||||||||||||||
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ID1 |
| SEL |
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| DB (1) |
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ID7: | Succeeds in ARBITRATION |
ID3: | Detects the SEL signal of other SCSI unit |
ID1: | Detects the SCSI ID with higher priority than itself |
∇: | The point at which the BUS FREE phase is detected by each SCSI unit. |
Appendix