User`s manual

CAPA831 Intel
®
Atom
TM
D2550/N2800/N2600 Processor 3.5” SBC
Board and Pin Assignments 17
2.4.4 PCI-Express Mini Card Connector (CN4)
This is a PCI-Express Mini Card connector which supports PCI-Express x1 link/SATA
link and USB 2.0 link. A PCI-Express Mini Card can be applied to either PCI-Express or
USB 2.0 or SATA (mSATA). It complies with PCI-Express Mini Card Spec. V1.2.
It can support mSATA. Please check section 4.4 to enable it.
Note: If mSATA is enabled, the CFast
TM
socket can’t function.
51
52 18
17
2
1
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
REFCLK+
14
No use
15
GND
16
No use
17
No use
18
GND
19
No use
20
W_DISABLE#
21
GND
22
PERST#
23
PE_RXN3/
SATA_RXP
24
+3.3VSB
25
PE_RXP3/
SATA_RXN
26
GND
27
GND
28
+1.5V
29
GND
30
SMB_CLK
31
PE_TXN3/
SATA_TXN
32
SMB_DATA
33
PE_TXP3/
SATA_TXP
34
GND
35
GND
36
USB_D8-
37
GND
38
USB_D8+
39
+3.3VSB
40
GND
41
+3.3VSB
42
No use
43
GND
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