Hitachi HUS157336EL3800 3 Pin assignment of SCSI Bus Connector C1, SCA-2, Single-ended mode

Table 11.3 Pin assignment of SCSI Bus Connector C1

(SCA-2, Single-ended mode)

Signal Name	Connector contact No.		Signal Name
12V	1	41	GND(12V Return)
12V	2	42	GND(12V Return)
12V	3	43	GND(12V Return)
12V	4	44	MATED1 (Note 2)
Open	5	45	Open
Open	6	46	DIFFSENS
-DB(11)	7	47	GND
-DB(10)	8	48	GND
-DB(9)	9	49	GND
-DB(8)	10	50	GND
-I/O	11	51	GND
-REQ	12	52	GND
-C/D	13	53	GND
-SEL	14	54	GND
-MSG	15	55	GND
-RST	16	56	GND
-ACK	17	57	GND
-BSY	18	58	GND
-ATN	19	59	GND
-DB(P0)	20	60	GND
-DB(7)	21	61	GND
-DB(6)	22	62	GND
-DB(5)	23	63	GND
-DB(4)	24	64	GND
-DB(3)	25	65	GND
-DB(2)	26	66	GND
-DB(1)	27	67	GND
-DB(0)	28	68	GND
-DB(P1)	29	69	GND
-DB(15)	30	70	GND
-DB(14)	31	71	GND
-DB(13)	32	72	GND
-DB(12)	33	73	GND
5V	34	74	MATED2 (Note 2)
5V	35	75	GND(5V Return)
5V	36	76	GND(5V Return)
Reserved	37	77	LED(with 0 ohm)
AUTO START (Note 1)	38	78	-DELAY START (Note 1)
-ID0 (Note 1)	39	79	-ID1 (Note 1)
-ID2 (Note 1)	40	80	-ID3 (Note 1)

Note 1 When this signal is held to ground, it is regarded as LOW. When this signal is open, it is regarded as HIGH. It can be driven by open collector driver.

Do not pull up this signal.

Note 2 The MATED2 signal is tied to ground, and the MATED1 signal is pulled up to HIGH level in the drive. When the drive detects the MATED1 signal is held to LOW, the drive regards the connection has completed. When the drive detects the MATED1 signal is held to HIGH, it regards the connection is incomplete.

Drawing No. Sheet No. Revision 5
K6602906	35/46	2003/6/12