Vecow EMBC-1000 User Manual page 26

The pin assignments of CN4 are listed in the following table:
Pin No. Signal Name
51
49
47
45
43
41
39
37
35
33
31
29
27
25
23
21
19
17
15
13
11
9
7
5
3
1
Reserved
Reserved
Reserved
Reserved
Status
+3.3Vaux
+3.3Vaux
GND
GND
PETp0
PETn0
GND
GND
PERp0
PERn0
GND
Reserved
Reserved
Mechanical Key
GND
REFCLK+
REFCLK-
GND
CLKREQ#
Reserved
Reserved
WAKE#
Pin No. Signal Name
52 +3.3Vaux
50
48
46 Reserved
44 Reserved
42 Reserved
40
38 USB_D+
36 USB_D-
34
32 SMB_DATA
30 SMB_CLK
28
26
24 +3.3Vaux
22 PERST#
20 reserved
18
16 UIM_VPP
14 UIM_RESET
12 UIM_CLK
10 UIM_DATA
8 UIM_PWR
6
4
2
GETTING TO KNOW YOUR EMBC-1000
GND
+1.5V
GND
GND
+1.5V
GND
GND
1.5V
GND
3.3Vaux
19