Q7B300 Qseven Module Development Board
24
Board and Pin Assignments
2.5.16
PCI-Express Mini Card Connector (CN25)
The CN25 is a PCI-Express Mini Card connector supporting PCI-Express x1 link and
USB 2.0 link. The PCI-Express Mini Card can be applied to either PCI-Express or USB
2.0.
Pin Signal
Pin
Signal
1
WAKE#
2
+3.3VSB
3
No use
4
GND
5
No use
6
+1.5V
7
CLKREQ#
8
No use
9
GND
10
No use
11
REFCLK-
12
No use
13
14
No use
15
GND
16
No use
17
No use
18
GND
19
No use
20
No use
21
GND
22
PERST#
23
PCIE_RX0-
24
+3.3VSB
25
P 26
GND
27
GND
28
+1.5V
29
GND
30
SMB_CLK
31
PCIE_TX0-
32
SMB_DATA
33
P
34
GND
35
GND
36
USB_P3-
37
GND
38
39
No use
40
GND
41
No use
42
No use
43
No use
44
No use
45
No use
46
No use
47
No use
48
+1.5V
49
No use
50
GND
51
No use
52
+3.3VSB
