Saturn User Manual V1
Page 27
6.1.19 PCIe/104 (J1)
The board provides expansion to PCIe/104 via a One-Bank connector. The connector provides access to four x1
PCIe lanes, two USB2.0s, ATX power & control signals, +3.3V & +5V power rails and SMBus interfaces. The pinout
of the connector is shown below:
Connector Type: SMT 52 position with 0.64mm pitch for PCIe/104 one bank of Samtec# ASP-129646-22
Mating Cable: Board to board connection only
USB-OC#
1
+
5
V
T
A
B
2
PCIe Reset#
+3.3V
3
4
+3.3V
USB_1+
5
6
USB_0+
USB_1-
7
8
USB_0-
Ground
9
10
Ground
PCIe1 Tx+
11
12
PCIe0 Tx+
PCIe1 Tx-
13
14
PCIe0 Tx-
Ground
15
16
Ground
PCIe2 Tx+
17
18
PCIe3 Tx+
PCIe2 Tx-
19
20
PCIe3 Tx-
Ground
21
22
Ground
PCIe1 Rx+
23
24
PCIe0 Rx+
PCIe1 Rx-
25
26
PCIe0 Rx-
Ground
27
28
Ground
PCIe2 Rx+
29
30
PCIe3 Rx+
PCIe2 Rx-
31
32
PCIe3 Rx-
Ground
33
34
Ground
PCIe1 Clk+
35
36
PCIe0 Clk+
PCIe1 Clk-
37
38
PCIe0 Clk-
+5VSB
39
40
+5VSB
PCIe2 Clk+
41
42
PCIe3 Clk+
PCIe2 Clk-
43
44
PCIe3 Clk-
Ground(Dir)
45
46
PWRGOOD
SMB Data
47
48
NC
SMB Clk
49
50
NC
SMB Alert#
51
52
PSON#
