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Appendix A SCSI Cables and Connectors
91
68-Pin Connector Pinout for LVD SCSI
Signal Connector
Pin
Cable
Pin
Cable
Pin
Connector
Pin
Signal
+DB(12) 1 1 2 35 -DB(12)
+DB(13) 2 3 4 36 -DB(13)
+DB(14) 3 5 6 37 -DB(14)
+DB(15) 4 7 8 38 -DB(15)
+DB(P1) 5 9 10 39 -DB(P1)
+DB(0) 6 11 12 40 -DB(0)
+DB(1) 7 13 14 41 -DB(1)
+DB(2) 8 15 16 42 -DB(2)
+DB(3) 9 17 18 43 -DB(3)
+DB(4) 10 19 20 44 -DB(4)
+DB(5) 11 21 22 45 -DB(5)
+DB(6) 12 23 24 46 -DB(6)
+DB(7) 13 25 26 47 -DB(7)
+DB(P) 14 27 28 48 -DB(P)
Ground 15 29 30 49 Ground
DIFFSENS 16 31 32 50 Ground
TERMPWR 17 33 34 51 TERMPWR
TERMPWR 18 35 36 52 TERMPWR
Reserved 19 37 38 53 Reserved
Ground 20 39 40 54 Ground
+ATN 21 41 42 55 -ATN
Ground 22 43 44 56 Ground
+BSY 23 45 46 57 -BSY
+ACK 24 47 48 58 -ACK
+RST 25 49 50 59 -RST
+MSG 26 51 52 60 -MSG
+SEL 27 53 54 61 -SEL
+C/D 28 55 56 62 -C/D
+REQ 29 57 58 63 -REQ
+I/O 30 59 60 64 -I/O
+DB(8) 31 61 62 65 -DB(8)
+DB(9) 32 63 64 66 -DB(9)
+DB(10) 33 65 66 67 -DB(10)
+DB(11) 34 67 68 68 -DB(11)
Notes The conductor number refers to the conductor position
when using flat-ribbon cable.