Vecow UMBC-1100 User Manual page 26

2.2.12 CN20, CN22 : two PCIe x4 Slot (PCH)
The pin assignments of CN20, CN22 are listed in the following table :
CN20
1 19
Pin No.
A1
A2
A3
A4
A5
A6
4 1 4
A7
A8
A9
A10
A11
A12
A13
A14
A15
©Vecow UMBC-1100 User Manual
CN22
B32
B31
A31
A32
Definition
Reserved
+V12S
+V12S
GND
CLKOUT_100M_X4_P2
7
7
CLKOUT_100M_X4_N2
7
1
CLKOUT_100M_X4_P3
CLKOUT_100M_X4_N3
+V3.3S
+V3.3S
PLTRST_PCIE#
GND
CLKOUT_100M_X4_P0
CLKOUT_100M_X4_N0
GND
2 3 1 5
4
U4 U1 U4 U1
U9
U5 U5 U9
U10 U13 U10
U13
22 25
U14 U18 U14 U18
1
R1
R1 R9
R9
4
R10 R2 R10
R2
L3 L4 L1 L2
L4
L1 L2 L3
7 1
2
8
Pin No.
B1
B2
B3
1
4
B4
2
B5
1 7 1 7 1
7
7 1
8
2
1 1
B6 1
1 2 8
7
10
10
1 1 10 1
1 7
B7
B8
B9
B10
B11
B12
B13
B14
B15
GETTING TO KNOW YOUR UMBC-1100
L5 L8
L1
L4
R1
R13
R10
R22
8 7
R11 R23
R12
R24
1
1
B2
B1
A1
A2
Definition
+V12S
+V12S
+V12S
GND
SM_SLOT_CLK
2
30
2 8 2 8 2 8 2 8
1
1 1 1
SM_SLOT_DAT
1
7 7 7 7
1
10 1 10 10 1 10 1
4
GND
+V3.3S
Reserved
+V3.3A
WAKE#
Reserved
GND
PCIE_TXP21
PCIE_TXN21
11 15
6 10
1 5
1
4
24
12
11
1 4 1
19