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©Vecow SPC-5000 User Manual
GETTING TO KNOW YOUR SPC-5000
2.4.1.5 CN4 : Mini PCIe, mSATA
Pin No.
Signal Name
Pin No.
Signal Name
51
Reserved
52
+3.3Vaux
49
Reserved
50
GND
47
Reserved
48
+1.5V
45
Reserved
46
Reserved
43
SATA_PCIE_SEL
44
Reserved
41
+3.3Vaux
42
Reserved
39
+3.3Vaux
40
GND
37
GND
38
USB_D+
35
GND
36
USB_D-
33
PETp0
34
GND
31
PETn0
32
SMB_DATA
29
GND
30
SMB_CLK
27
GND
28
+1.5V
25
PERp0
26
GND
23
PERn0
24
+3.3Vaux
21
GND
22
PERST#
19
Reserved
20
reserved
17
Reserved
18
GND
Mechanical Key
15
GND
16
Reserved
13
14
Reserved
11
REFCLK-
12
Reserved
9
GND
10
Reserved
7
CLKREQ#
8
Reserved
5
Reserved
6
1.5V
3
Reserved
4
GND
1
WAKE#
2
3.3Vaux
Both mSATA and Mini PCIe share the same form factor and similar electrical
pinout assignments on their connectors. There was no clear mechanism to
distinguish if a mSATA drive or a Mini PCIe device is plugged into the socket until
recently that SATA I/O issued an ECN change (ECN #045) to redefine pin43 on
mSATA connector as "no connect" instead of "return current path" (or GND).
When an mSATA drive is inserted, its pin-43 is "no connect", and the respective
pin on the socket is being pulled-up to logic 1. When a Mini PCIe device is
inserted, its pin-43 forces the respective pin on the socket to ground, or logic 0.
The pin assignments of CN4 are listed in the following table :
CN4
