Seagate ST43401N/ND ST43402ND I/O board J10 jumpers, Scsi Id = A, Scsi Id = B, Scsi Id = C

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)

Self-Test (ST)

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

=Non-applicable pin (not relevant to the option discussed)

WPL PA L6 FL

	WPL PA			L6 FL			L4
L4		PB	RL		SDO	NA

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
Remove ground after reset.		SCSI ID = 1
Write Protect/Enable (WPL)
Write protect (disable writing)		SCSI ID = 2
Write enable (enable writing)		SCSI ID = 3
Panel Start/Stop (PSS)		SCSI ID = 4
Start spindle after the SCSI bus sends a		SCSI ID = 5
Start Unit command.
Start spindle according to the Spinup Delay		SCSI ID = 6
Option (SDO) pin on this I/O board.
Spinup Delay Option (SDO)		SCSI ID = 7
Used only if the PSS pin jumper is not connected.		SCSI ID = 8

Start turning spindle when power is applied.

Start spindle after a delay. The delay	SCSI ID = 9
(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.
SCSI Bus Select Mode Option (SBS)	SCSI ID = B
Allow ports A and B to have different SCSI IDs.	SCSI ID = C
Assign port A the same SCSI ID that port B has.	SCSI ID = D
Self-Test (ST)	SCSI ID = E
Use this pin to connect an indicator which will flash	SCSI ID = F
when the drive is in the self-test mode of power up.

MR ID2 ST ID0 ID3

WRT ID1 SBS PSS

Figure 11. ST43402ND I/O board J10 jumpers