Seagate ST15150DC, Product Manual

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80 ST15150N/ND/W/WD/WC/DC Product Manual, Rev. D
Table 17. Differential contact assignments (P cable)
for ST15150WD drives
Signal Connector Connector Signal
name contact number contact number name
DB (12) 1 35
−
DB (12)
DB (13) 2 36
−
DB (13)
DB (14) 3 37
−
DB (14)
DB (15) 4 38
−
DB (15)
DB (P1) 5 39
−
DB (P1)
GROUND 6 40 GROUND
DB (0) 7 41
−
DB (0)
DB (1) 8 42
−
DB (1)
DB (2) 9 43
−
DB (2)
DB (3) 10 44
−
DB (3)
DB (4) 11 45
−
DB (4)
DB (5) 12 46
−
DB (5)
DB (6) 13 47
−
DB (6)
DB (7) 14 48
−
DB (7)
DB (P) 15 49
−
DB (P)
DIFFSENS 16 50 GROUND
TERMPWR 17 51 TERMPWR
TERMPWR 18 52 TERMPWR
RESERVED 19 53 RESERVED
ATN 20 54
−
ATN
GROUND 21 55 GROUND
BSY 22 56
−
BSY
ACK 23 57
−
ACK
RST 24 58
−
RST
MSG 25 59
−
MSG
SEL 26 60
−
SEL
C/D 27 61
−
C/D
REQ 28 62
−
REQ
I/O 29 63
−
I/O
GROUND 30 64 GROUND
DB (8) 31 65
−
DB (8)
DB (9) 32 66
−
DB (9)
DB (10) 33 67
−
DB (10)
DB (11) 34 68
−
DB (11)
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.