|
| ARBITRATION phase |
|
| bus settle |
|
|
| delay | bus free delay |
|
| BSY |
|
|
SCSI | SEL |
|
|
| DB |
| bus clear delay |
| bus set | arbitration delay | |
| delay | + bus settle delay | |
| & |
|
|
| BSY |
|
|
| bus free |
|
|
| delay |
|
|
ID7 | SEL |
|
|
| DB(7) | bus clear delay |
|
|
|
| |
| bus set delay |
|
|
| BSY | & |
|
|
|
| |
| bus free |
|
|
| delay |
|
|
ID3 | SEL |
|
|
| DB (3) |
|
|
|
| arbitration delay |
|
| BSY |
|
|
| & | bus free |
|
|
|
| |
|
| delay |
|
ID1 | SEL |
|
|
| DB (1) |
|
|
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. |
4 $ 14