Seagate ST34520N - Medalist 4.55 GB Hard Drive Product Manual page 75

Medalist Pro Product Manual, Rev. D
Table 16: Model "N," single ended I/O, 50 conductor, signal/contact assignments
Note. The minus sign next to the signal indicates asserted state is the low voltage of the two levels used for
logic signals.
Connector
Signal contact
name [1] number [3]
GND 1
GND 3
GND 5
GND 7
GND 9
GND 11
GND 13
GND 15
GND 17
GND 19
GND 21
GND 23
NC [10] 25*
GND 27
GND 29
GND 31
GND 33
GND 35
GND 37
GND 39
GND 41
GND 43
GND 45
GND 47
GND 49
*CAUTION: Connector contact 25 must not be connected to ground at the host end of the cable. If the I/O
cable should accidently be plugged in upside down, terminator power on pin 26 will be shorted to
ground.
Notes [ ]: See page following Table 20.
Cable Connector
conductor contact
number [11] number [11]
1 2 2
3 4 4
5 6 6
7 8 8
9 10 10
11 12 12
13 14 14
15 16 16
17 18 18
19 20 20
21 22 22
23 24 24
25 26 26
27 28 28
29 30 30
31 32 32
33 34 34
35 36 36
37 38 38
39 40 40
41 42 42
43 44 44
45 46 46
47 48 48
49 50 50
65
Signal
name [1]
–DB0
–DB1
–DB2
–DB3
–DB4
–DB5
–DB6
–DB7
–DBP
GND
GND
GND
TERMPWR
GND
GND
–ATN
GND
–BSY
–ACK
–RST
–MSG
–SEL
–C/D
–REQ
–I/O