Barracuda 4LP Installation Guide, Rev. B | 41 | ||||
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68 Pin SCSI I/O | +5V |
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Connector Pin 1 | Ground | Pin 1A |
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| Rear |
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4P | 3P2P | 1P |
J1 |
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| SCSI ID = 0 |
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| SCSI ID = 1 |
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| SCSI ID = 2 |
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| SCSI ID = 3 |
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| SCSI ID = 4 |
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| SCSI ID = 5 |
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| SCSI ID = 6 |
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| For ID selection use | ||||
| SCSI ID = 7 |
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| jumpers as shown or | |||||
| SCSI ID = 8 |
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| connect a cable for | ||||
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| remote switching as | |||||
| SCSI ID = 9 |
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| shown below. | ||||
| SCSI ID = 10 |
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| SCSI ID = 11 |
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| SCSI ID = 12 |
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| SCSI ID = 13 |
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| SCSI ID = 14 |
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| SCSI ID = 15 |
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| Pins 1, 3, 5, and 7 are | |||
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| not used |
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| A3 A2 A1A0 |
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| optional connections to | |||||||
Host | Alternate |
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| switching circuits in host | |||
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| equipment to establish | |||||
Usage Plug |
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11 9 7 | 5 | 3 | 1 |
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| drive ID. | ||||||
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| A0 A1 A2 | A3 | |||||||
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| +5V |
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| Remote Switches | |||
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| 12 10 8 | 6 | 4 | 2 |
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| Pins 2, 4, 6, and 8 are normally | ||||
+5V | N.C. |
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| not grounded. They are driven low | |||
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| Ground |
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| (ground) for 250 ms after a Reset or | ||
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| PWR ON to allow drive to read | |
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| Drive Activity LED |
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| SCSI ID selected. Pin 8 may | |||||||
Dashed area is optional host circuitry (external to the | also be used to drive the cathode | |||||||||||
drive) connected to host supplied optional usage plug. | of an external Activity LED. | |||||||||||
