Manual

Kingston Technology Company DE300i-S User's Guide - Rev. B00
18 Installation
SCSI Interface Connectors
The SCSI interface connector pin assignments are supplied for your convenience. All odd
numbered pins, except pins 25 and 29 must be connected to ground. Pin 25 should be left
open. Pin 29 can be used for synchronized spindle operation. Pin 26 is reserved for terminator
resistor power source.
Table 3: 50-Pin 8-Bit SCSI Interface Connectors J3, J4, and J5
Pin Assignments
Pin Signal Pin Signal Pin Signal Pin Signal
1 GROUND 2 -DB (0) 25 OPEN 26 TRMPWR
3 GROUND 4 -DB (1) 27 GROUND 28 -GROUND
5 GROUND 6 -DB (2) 29 SYNC 30 -GROUND
7 GROUND 8 -DB (3) 31 GROUND 32 -ATN
9 GROUND 10 -DB (4) 33 GROUND 34 GROUND
11 GROUND 12 -DB (5) 35 GROUND 36 BSY
13 GROUND 14 -DB (6) 37 GROUND 38 ACK
15 GROUND 16 -DB (7) 39 GROUND 40 -RST
17 GROUND 18 -DB (P) 41 GROUND 42 -MSG
19 GROUND 20 GROUND 43 GROUND 44 -SEL
21 GROUND 22 GROUND 45 GROUND 46 -C/D
23 GROUND 24 GROUND 47 GROUND 48 -REQ
49 GROUND 50 -I/O
NOTE: The hyphen preceding a signal name indicates that the signal is active low.