Dell 3250 - Table 38. Ultra320 SCA-2 Connector Pinout; Ultra320 SCA-2 HDD Connector

206
Ultra320 SCA-2 HDD Connector
The SCSI backplane board provides two SCA-2 (80-pin) connectors for hot-swapping Ultra320
hard drives. See Table 38. These SCSI ports are controlled by SCSI port 1 of the LSI53C1030
LVDS controller component located on the main board.
Table 38. Ultra320 SCA-2 Connector Pinout
80-pin Connector Contact
and Signal Name
SCA-2 Connector 80-pin Connector Contact
and Signal Name
1 12-V Charge 12-V Ground 41
2 12-V Charge 12-V Ground 42
3 12-V Charge 12-V Ground 43
4 12-V Charge Mated 1 44
5 Reserved/ESI-1 -EFW 45
6 Reserved/ESI-2 DIFFSNS 46
7 -DB(11) +DB(11) 47
8 -DB(10) +DB(10) 48
9 -DB(9) +DB(9) 49
10 -DB(8) +DB(8) 50
11 -I/O +I/O 51
12 -REQ +REQ 52
13 -C/D +C/D 53
14 -SEL +SEL 54
15 -MSG +MSG 55
16 -RST +RST 56
17 -ACK +ACK 57
18 -BSY +BSY 58
19 -ATN +ATN 59
20 -P_CRCA +P_CRCA 60
21 -DB(7) +DB(7) 61
22 -DB(6) +DB(6) 62
23 -DB(5) +DB(5) 63
24 -DB(4) +DB(4) 64
25 -DB(3) +DB(3) 65
26 -DB(2) +DB(2) 66
27 -DB(1) +DB(1) 67
28 -DB(0) +DB(0) 68
29 -DB(P1) +DB(P1) 69
30 -DB(15) +DB(15) 70
31 -DB(14) +DB(14) 71
32 -DB(13) +DB(13) 72
33 -DB(12) +DB(12) 73