User`s manual

Chapter 2: Installation
2-35
®
S
UPER X7DA8+
A
B
A. SCSI Channel A
B. SCSI Channel B
Ultra 320 SCSI Connectors
(*X7DA8+ only)
There are two SCSI connectors on
the motherboard. SCSI Channel A is
located at JA1, and SCSI Channel
B is located at JA2. Refer to the
table below for the pin defi nitions
of the Ultra 320 SCSI connectors
located at JA1 and JA2.
Ultra320 SCSI Drive Connector
Pin Defi nitions (J28)
Pin# Defi nition Pin # Defi nition
1 +DB (12) 35 -DB (12)
2 +DB (13) 36 -DB (13)
3 +DB (14) 37 -DB (14)
4 +DB (15) 38 -DB (15)
5 +DB (P1) 39 -DB (P1)
6 +DB (0) 40 -DB (0)
7 +DB (1) 41 -DB (1)
8 +DB (2) 42 -DB (2)
9 +DB (3) 43 -DB (3)
10 +DB (4) 44 -DB (4)
11 +DB (5) 45 -DB (5)
12 +DB (6) 46 -DB (6)
13 +DB (7) 47 -DB (7)
14 +DB (P) 48 -DB (P)
15 Ground 49 Ground
16 DIFFSENS 50 Ground
17 TERMPWR 51 TERMPWR
18 TERMPWR 52 TERMPWR
19 Reserved 53 Reserved
20 Ground 54 Ground
21 +ATN 55 -ATN
22 Ground 56 Ground
23 +BSY 57 -BSY
24 +ACK 58 -ACK
25 +RST 59 -RST
26 +MSG 60 -MSG
27 +SEL 61 -SEL
28 +C/D 62 -C/D
29 +REQ 63 -REQ
30 +I/O 64 -I/O
31 +DB (8) 65 -DB (8)
32 +DB (9) 66 -DB (9)
33 +DB (10) 67 -DB (10)
34 +DB (11) 68 -DB (11)