Product manual

78 Barracuda 2LP Product Manual, Rev. D
Table 15. Differential cable pin assignments
(non-shielded connector) for ST31250ND
and ST32550ND drives
++
++
+Signal name* Pin number
−−
−−
−Signal name*
SHIELD GND 1 2 GROUND
DB (0) 3 4 −DB (0)
DB (1) 5 6 −DB (1)
DB (2) 7 8 −DB (2)
DB (3) 9 10 −DB (3)
DB (4) 11 12 −DB (4)
DB (5) 13 14 −DB (5)
DB (6) 15 16 −DB (6)
DB (7) 17 18 −DB (7)
DB (P) 19 20 DB (P)
DIFFSENS 21 22 GROUND
GROUND 23 24 GROUND
TERMPWR 25 26 TERMPWR
GROUND 27 28 GROUND
ATN 29 30 −ATN
GROUND 31 32 GROUND
BSY 33 34 −BSY
ACK 35 36 −ACK
RST 37 38 −RST
MSG 39 40 −MSG
SEL 41 42 −SEL
C/D 43 44 −C/D
REQ 45 46 −REQ
I/O 47 48 −I/O
GROUND 49 50 GROUND
*See Section 11.7.3.2 for detailed electrical characteristics of these
differential signals.