Seagate ST15150N Product Manual - Page 66

ST15150W/WD

Get Seagate ST15150N - Barracuda 4.3 GB Hard Drive PDF manuals and user guides View all Seagate ST15150N manuals
Add to My Manuals
Save this manual to your list of manuals

Page 66 highlights

56 10.2.1.2 10.2.1.3 ST15150N/ND/W/WD/WC/DC Product Manual, Rev. D Termination The reference index signal (SSREF+) is terminated with a 2.21K ohm resistor. Each single-ended drive has a terminator resistor located on the main PCB. The terminator resistor is not removable and is always in the circuit. A diode prevents current from backfeeding. Physical interface Dimensions of the J04 (J4) connector mounted on the main PCB of ST15150N/ND drives to interconnect the drives are shown in Figure 26. The connector is a 22-pin, 11-position gold 2 mm header type. Only pins 1 and 2 are used for connecting the reference index signal cable, as shown in Figure 20. Pin 1 is SSREF+ and pin 2 is ground. .866 (22 mm) .079 (2 mm) .079 (2 mm) J04 .787 (20 mm) Figure 26. ST15150N/ND drives configuration select header specification Dimensions of the J5 connector mounted on the main PCB ofST15150W/WD drives to interconnect the drives are shown in Figure 27. The connector is a 12-pin, 6-position gold 2 mm header type connector. Only pins 11 and 12 are used for connecting the reference index signal cable, as shown in Figure 22. Pin 11 is SSREF+ and pin 12 is ground. .079 (2 mm) .520 (13.2 mm) J5 .079 (2 mm) Pin 1 .185 (4.7 mm) Figure 27. ST15150W/WD drives configuration select header specification

  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10
  • 11
  • 12
  • 13
  • 14
  • 15
  • 16
  • 17
  • 18
  • 19
  • 20
  • 21
  • 22
  • 23
  • 24
  • 25
  • 26
  • 27
  • 28
  • 29
  • 30
  • 31
  • 32
  • 33
  • 34
  • 35
  • 36
  • 37
  • 38
  • 39
  • 40
  • 41
  • 42
  • 43
  • 44
  • 45
  • 46
  • 47
  • 48
  • 49
  • 50
  • 51
  • 52
  • 53
  • 54
  • 55
  • 56
  • 57
  • 58
  • 59
  • 60
  • 61
  • 62
  • 63
  • 64
  • 65
  • 66
  • 67
  • 68
  • 69
  • 70
  • 71
  • 72
  • 73
  • 74
  • 75
  • 76
  • 77
  • 78
  • 79
  • 80
  • 81
  • 82
  • 83
  • 84
  • 85
  • 86
  • 87
  • 88
  • 89
  • 90
  • 91
  • 92
  • 93
  • 94
  • 95
  • 96
  • 97
  • 98
  • 99
  • 100
  • 101
  • 102
56
ST15150N/ND/W/WD/WC/DC Product Manual, Rev. D
10.2.1.2
Termination
The reference index signal (SSREF
+
) is terminated with a 2.21K ohm
resistor. Each single-ended drive has a terminator resistor located on the
main PCB. The terminator resistor is not removable and is always in the
circuit. A diode prevents current from backfeeding.
10.2.1.3
Physical interface
Dimensions of the J04 (J4) connector mounted on the main PCB of
ST15150N/ND drives to interconnect the drives are shown in Figure 26. The
connector is a 22-pin, 11-position gold 2 mm header type. Only pins 1 and
2 are used for connecting the reference index signal cable, as shown in
Figure 20. Pin 1 is SSREF+ and pin 2 is ground.
Figure 26. ST15150N/ND drives configuration select header specification
Dimensions of the J5 connector mounted on the main PCB of
ST15150W/WD
drives to interconnect the drives are shown in Figure 27. The connector is
a 12-pin, 6-position gold 2 mm header type connector. Only pins 11 and 12
are used for connecting the reference index signal cable, as shown in
Figure 22. Pin 11 is SSREF+ and pin 12 is ground.
Figure 27. ST15150W/WD drives configuration select header specification
.866
(22 mm)
.079 (2 mm)
.079
(2 mm)
.787
(20 mm)
J04
J5
Pin 1
.079
(2 mm)
.079
(2 mm)
.520
(13.2 mm)
.185
(4.7 mm)