8-28 SCSI and I/O
Jumpering
The drive options and SCSI address are set on J3 (see Figure 8-7 ). Table 8-14 on page 8-28 shows the pin-
sets for the available options.
The SCSI address can also be set on the option connector located next to the SCSI cable connector and the
power connector (see ) .
Table 8-14 J3 Option Jumpers
Pin-set Function Configuration
1-2 SCSI ID 3 SCSI ID bit 3. Open = O, Jumpered = 1
3-4 SCSI ID 2 SCSI ID bit 2. Open = O, Jumpered = 1
5-6 SCSI ID 1 SCSI ID bit 1. Open = O, Jumpered = 1
7-8 SCSI ID 0 SCSI ID bit 0. Open = O, Jumpered = 1
9-10 FLT LED/Blank Active low connection for cathode of fault status LED
(used with pin 18)
11-12 GND/Delay Spin Jumpered = Spin Delay is enabled
13-14 Not supported -
15-16 SPINDLE_SYNC_REFL Provides connection for Spindle Sync REF signal
17-18 +5 VDC OUT Pin 17: +5VDC out.
Pin 18: Active low connection for cathode of busy LED .
19-20 Write Protect Jumpered = Write Protect is enabled
21-22 Stagger Spin Jumper - Staggered Spin is enabled
23-24 Enable Narrow Mode -
25-26 Not supported -
27-28 Not supported -
29-30 Not supported -
31-32 Not supported -
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