User Manual

Technical Reference
25
52
CLKREQ# (I/O)(0/3.3V) or N/C
53
REFCLKN
50
PERST# (O)(0/3.3V) or N/C
51
GND
48
N/C
49
PETp0
46
N/C
47
PETn0
44
N/C
45
GND
42
N/C
43
PERp0
40
N/C
41
PERn0
38
DEVSLP (O)
39
GND
36
N/C
37
PETp1
34
N/C
35
PETn1
32
N/C
33
GND
30
N/C
31
PERp1
28
N/C
29
PERn1
26
N/C
27
GND
24
N/C
25
PETp2
22
N/C
23
PETn2
20
N/C
21
GND
18
3.3V (4A total for pins 74, 72, 70, 18, 16, 14, 12, 4, 2 (0.5A per pin))
19
PERp2
16
3.3V (4A total for pins 74, 72, 70, 18, 16, 14, 12, 4, 2 (0.5A per pin))
17
PERn2
14
3.3V (4A total for pins 74, 72, 70, 18, 16, 14, 12, 4, 2 (0.5A per pin))
15
GND
12
3.3V (4A total for pins 74, 72, 70, 18, 16, 14, 12, 4, 2 (0.5A per pin))
13
PETp3
10
DAS/DSS# (I/O)/LED1# (I)(0/3.3V)
11
PETn3
8
N/C
9
GND
6
N/C
7
PERp3
4
3.3V (4A total for pins 74, 72, 70, 18, 16, 14, 12, 4, 2 (0.5A per pin))
5
PERn3
2
3.3V (4A total for pins 74, 72, 70, 18, 16, 14, 12, 4, 2 (0.5A per pin))
3
GND
1
GND
5.1.1.1 Front Panel Header (2.0 mm Pitch)
This section describes the functions of the front panel header. Table 9 lists the signal names of
the front panel header. Front Panel Header (2.0 mm Pitch) is a connection diagram for the front
panel header.
Table 9. Front Panel Header (2.0 mm Pitch)
Pin
Signal Name
Description
Pin
Signal Name
Description
1
HDD_POWER_LED
Pull-up 750Ω to +5V
2
POWER_LED_MAIN
[Out] Front panel LED (main
color) Pull-up 300Ω to +5V
3
HDD_LED#
[Out] HDD activity LED
4
POWER_LED_ALT
[Out] Front panel LED (alt
color)
5
GROUND
Ground
6
POWER_SWITCH#
[In] Power switch
7
RESET_SWITCH#
[In] Reset switch
8
GROUND
Ground
9
+5V_DC (1A) (Vcc)
Power
10
Key
No pin