Connections
CB3067
30
Version: 1.0
Pin assignment PCI-Express connector
Description
Name
Pin
Name
Description
3.3 V supply voltage
3.3V
1
2
12V
12 V supply voltage
Standby supply 3.3 V
S3.3V
3
4
SMCLK1
SMB Clock Slot 1
PCIe Reset 1 -
PERST1#
5
6
SMDAT1
SMB Data Slot 1
Link Reactivation 1 -
WAKE1#
7
8
GND
Ground
Ground
GND
9
10
REFCLK1
PCIe Clock 1 +
Transmit Lane 1 +
PET1
11
12
REFCLK1#
PCIe Clock 1 -
Transmit Lane 1 -
PET1#
13
14
GND
Ground
Ground
GND
15
16
PER1
Receive Lane 1 +
Clock Enable 1 -
PRSNT1#
17
18
PER1#
Receive Lane 1 -
Ground
GND
19
20
GND
Ground
3.3 V supply voltage
3.3V
21
22
12V
12 V supply voltage
Standby supply 3.3 V
S3.3V
23
24
SMCLK2
SMB Clock Slot 2
PCIe Reset 2 -
PERST2#
25
26
SMDAT2
SMB Data Slot 2
Link Reactivation 2 -
WAKE2#
27
28
GND
Ground
Ground
GND
29
30
REFCLK2
PCIe Clock 2 +
Transmit Lane 2 +
PET2
31
32
REFCLK2#
PCIe Clock 2 -
Transmit Lane 2 -
PET2#
33
34
GND
Ground
Ground
GND
35
36
PER2
Receive Lane 2 +
Clock Enable 2 -
PRSNT2#
37
38
PER2#
Receive Lane 2 -
Ground
GND
39
40
GND
Ground
3.3 V supply voltage
3.3V
41
42
12V
12 V supply voltage
Standby supply 3.3 V
S3.3V
43
44
SMCLK3
SMB Clock Slot 3
PCIe Reset 3 -
PERST3#
45
46
SMDAT3
SMB Data Slot 3
Link Reactivation 3 -
WAKE3#
47
48
GND
Ground
Ground
GND
49
50
REFCLK3
PCIe Clock 3 +
Transmit Lane 3 +
PET3
51
52
REFCLK3#
PCIe Clock 3 -
Transmit Lane 3 -
PET3#
53
54
GND
Ground
Ground
GND
55
56
PER3
Receive Lane 3 +
Clock Enable 3 -
PRSNT3#
57
58
PER3#
Receive Lane 3 -
Ground
GND
59
60
GND
Ground
3.3 V supply voltage
3.3V
61
62
12V
12 V supply voltage
Standby supply 3.3 V
S3.3V
63
64
SMCLK4
SMB Clock Slot 4
PCIe Reset 4 -
PERST4#
65
66
SMDAT4
SMB Data Slot 4
Link Reactivation 4 -
WAKE4#
67
68
GND
Ground
Ground
GND
69
70
REFCLK4
PCIe Clock 4 +
Transmit Lane 4 +
PET4
71
72
REFCLK4#
PCIe Clock 4 -
Transmit Lane 4 -
PET4#
73
74
GND
Ground
Ground
GND
75
76
PER4
Receive Lane 4 +
Clock Enable 4 -
PRSNT4#
77
78
PER4#
Receive Lane 4 -
PCIe configuration x1/x4
PECONF x1/
x4
79
80
GND
Ground