Seagate Barracuda 9LP FC Installation Manual page 27

Fibre channel disc drive
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Barracuda 9LP FC Installation Guide, Rev. A
Table 1:
FC-SCA pin descriptions
Pin/contact
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*
Signal name
–EN bypass port A
12 Volts
12 Volts
12 Volts
–Parallel ESI
[1]
Ground
Active LED out
Reserved
Start_1
Start_2
–EN bypass port B
SEL_6
SEL_5
SEL_4
SEL_3
Fault LED out
Reserved NC
Reserved NC
5 Volts
5 Volts
12 Volts charge
Ground
Ground
+Port A_in
–Port A_in
Signal type
TTL output
Open collector out
TTL input
TTL input
TTL output
TTL input/output
TTL input/output
TTL input/output
TTL input/output
Open collector out
Diff. PECL input pair
25

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