ST43401N/ND, ST43402ND User’s Manual, Rev. B | 27 |
Pin 2
Pin 1
LED 4 (L4)
Write Protect/Enable LED (WPL)
Port B Active LED (PB)
Port A Active LED (PA)
Ready LED (RL)
LED 6 N/A (L6)
Spinup Delay Option (SDO)
Fault LED (FL)
Not Assigned (NA)
J10
ID 03 (ID3)
Panel Start/Stop (PSS)
ID 00 (ID0)
SCSI Bus Select (SBS)
ID 01 (ID1)
ID 02 (ID2)
Write Protect/Enable (WRT)
Manual Reset (MR)
= Ground this pin to the external device to activate the option discussed
= Remove ground from this pin using the external device to negate this option
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WPL PA L6 FL
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| L6 FL |
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L4 | PB |
| RL | SDO |
| NA |
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PB RL SDO NA
| MR ID2 | ST ID0 ID3 SCSI Bus ID |
Manual Reset (MR) | WRT ID1 | SBS PSS |
Ground this pin to manually reset the SCSI board. |
| SCSI ID = 0 |
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Remove ground after reset. |
| SCSI ID = 1 |
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Write Protect/Enable (WPL) |
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Write protect (disable writing) |
| SCSI ID = 2 |
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Write enable (enable writing) |
| SCSI ID = 3 |
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Panel Start/Stop (PSS) |
| SCSI ID = 4 |
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Start spindle after the SCSI bus sends a |
| SCSI ID = 5 |
Start Unit command. |
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Start spindle according to the Spinup Delay |
| SCSI ID = 6 |
Option (SDO) pin on this I/O board. |
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Spinup Delay Option (SDO) |
| SCSI ID = 7 |
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Used only if the PSS pin jumper is not connected. |
| SCSI ID = 8 |
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Start turning spindle when power is applied.
Start spindle after a delay. The delay | SCSI ID = 9 | |
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(in seconds) is 10 seconds times the SCSI ID. | SCSI ID = A | |
For example, when the SCSI ID is 4, a delay | ||
of 40 seconds occurs before spinup starts. |
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SCSI Bus Select Mode Option (SBS) | SCSI ID = B | |
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Allow ports A and B to have different SCSI IDs. | SCSI ID = C | |
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Assign port A the same SCSI ID that port B has. | SCSI ID = D | |
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SCSI ID = E | ||
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Use this pin to connect an indicator which will flash | SCSI ID = F | |
when the drive is in the | ||
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MR ID2 ST ID0 ID3
WRT ID1 SBS PSS