Seagate ST15150N - Barracuda 4.3 GB Hard Drive Product Manual page 90

80 ST15150N/ND/W/WD/WC/DC Product Manual, Rev. D
Table 17. Differential contact assignments (P cable)
for ST15150WD drives
Signal Connector
name contact number
DB (12) 1
DB (13) 2
DB (14) 3
DB (15) 4
DB (P1) 5
GROUND 6
DB (0) 7
DB (1) 8
DB (2) 9
DB (3) 10
DB (4) 11
DB (5) 12
DB (6) 13
DB (7) 14
DB (P) 15
DIFFSENS 16
TERMPWR 17
TERMPWR 18
RESERVED 19
ATN 20
GROUND 21
BSY 22
ACK 23
RST 24
MSG 25
SEL 26
C/D 27
REQ 28
I/O 29
GROUND 30
DB (8) 31
DB (9) 32
DB (10) 33
DB (11) 34
Notes:
1. The hyphen preceding a signal name indicates that signal is active low.
2. Eight-bit devices that connect to the P cable should leave the following
signals open: DB(12), DB(13), DB(14), DB(15), DB(P1), DB(8),
DB(9), DB(10), DB(11), DB(12), DB(13), DB(14), DB(15), DB(P1),
DB(8), DB(9), DB(10), and DB(11). All other signals should be connected
as defined.
Connector Signal
contact number name
35 DB (12)
36 DB (13)
37 DB (14)
38 DB (15)
39 DB (P1)
40 GROUND
41 DB (0)
42 DB (1)
43 DB (2)
44 DB (3)
45 DB (4)
46 DB (5)
47 DB (6)
48 DB (7)
49 DB (P)
50 GROUND
51 TERMPWR
52 TERMPWR
53 RESERVED
54 ATN
55 GROUND
56 BSY
57 ACK
58 RST
59 MSG
60 SEL
61 C/D
62 REQ
63 I/O
64 GROUND
65 DB (8)
66 DB (9)
67 DB (10)
68 DB (11)