Seagate ST3300655LC, ST3146855LC manual LC 80-pin single-ended LVD I/O connector pin assignments

Table 20: LC 80-pin single-ended (LVD) I/O connector pin assignments [11]

Note. A minus sign preceding a signal name indicates that signal is active low.

Signal	Connector contact	Signal	Contact
name [1]	number [3]	number [3]	name[1]
12 V CHARGE	1	41	12 V GND
12 V	2	42	12 V GND
12 V	3	43	12 V GND
12 V	4	44	MATED 1 [12]
NC [10]	5	45	NC [10]
NC [10]	6	46	DIFFSNS [8]
–DB11	7	47	+DB11
–DB10	8	48	+DB10
–DB9	9	49	+DB9
–DB8	10	50	+DB8
–I/O	11	51	+I/O
–REQ	12	52	+REQ
–C/D	13	53	+C/D
–SEL	14	54	+SEL
–MSG	15	55	+MSG
–RST	16	56	+RST
–ACK	17	57	+ACK
–BSY	18	58	+BSY
–ATN	19	59	+ATN
–DBP	20	60	+DBP0
–DB7	21	61	+DB7
–DB6	22	62	+DB6
–DB5	23	63	+DB5
–DB4	24	64	+DB4
–DB3	25	65	+DB3
–DB2	26	66	+DB2
–DB1	27	67	+DB1
–DB0	28	68	+DB0
–DBP1	29	69	+DP1
–DB15	30	70	+DB15
–DB14	31	71	+DB14
–DB13	32	72	+DB13
–DB12	33	73	+DB12
+5 V	34	74	MATED 2
+5 V	35	75	5 V GND
+5 V CHARGE	36	76	5 V GND
NC [10]	37	77	ACTIVE LED OUT [4] [9]
RMT_START [5] [9] [12]	38	78	DLYD_START [6] [9] [12]
SCSI ID (0) [7] [9] [12]	39	79	SCSI ID (1) [7] [9] [12]
SCSI ID (2) [7] [9] [12]	40	80	SCSI ID (3) [7] [9] [12]

Notes []: See page following this table.

Cheetah 15K.5 SCSI Product Manual, Rev. J 67