Seagate ST43402ND, ST43401N/ND Ground Diffsens Termpwr Reserved ATN BSY ACK RST MSG SEL REQ

20 ST43401N/ND, ST43402ND User’s Manual, Rev. B

Table 5. Unshielded differential I/O cabling (P cable)

	Even pin		Odd pin
Signal name	numbers	Signal name	numbers
DB– (12)	2	DB (12)	1
DB– (13)	4	DB (13)	3
DB– (14)	6	DB (14)	5
DB– (15)	8	DB (15)	7
DB– (P1)	10	DB (P1)	9
GROUND	12	GROUND	11
DB– (0)	14	DB (0)	13
DB– (1)	16	DB (1)	15
DB– (2)	18	DB (2)	17
DB– (3)	20	DB (3)	19
DB– (4)	22	DB (4)	21
DB– (5)	24	DB (5)	23
DB– (6)	26	DB (6)	25
DB– (7)	28	DB (7)	27
DB– (P)	30	DB (P)	29
GROUND	32	DIFFSENS	31
TERMPWR	34	TERMPWR	33
TERMPWR	36	TERMPWR	35
RESERVED	38	RESERVED	37
ATN–	40	ATN	39
GROUND	42	GROUND	41
BSY–	44	BSY	43
ACK–	46	ACK	45
RST–	48	RST	47
MSG–	50	MSG	49
SEL–	52	SEL	51
C/D–	54	C/D	53
REQ–	56	REQ	55
I/O–	58	I/O	57

Note. A minus sign indicates active low. continued