ClearFog LX2162 mPCI-E Assembly Option
Revisions and Notes
Date | Owner | Revision | Notes |
17/09/2025 | Josua | 1 | release |
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Introduction
LX2162A Clearfog board has 2x mini-pcie connectors by default supporting just USB-2.0 interface.
There is an assembly option for rerouting lanes from 2x RJ45 ports to the mpcie connectors, enabling PCI-E Gen. 3 x1 on each connector while disabling 2x RJ45 ports.
This page describes the required rework.
Electrical Rework
Component | Description | Part Number |
|---|---|---|
capacitor 100nF | CAP CER 0.1uF ±10% 25V X7R 0402 Low ESR | e.g. 0402X104K250SNT |
resistor 0-Ohm | RES SMD 0 OHM JUMPER 1/16W 0402 | e.g. CR0402-J/-000GLF |
Part Label | Part | Action |
|---|---|---|
C130 | capacitor 100nF | remove |
C131 | capacitor 100nF | remove |
C137 | capacitor 100nF | remove |
C138 | capacitor 100nF | remove |
C153 | capacitor 100nF | remove |
C154 | capacitor 100nF | remove |
C157 | capacitor 100nF | remove |
C158 | capacitor 100nF | remove |
C3122 | capacitor 100nF | place (reuse removed parts) |
C3123 | capacitor 100nF | place (reuse removed parts) |
C3124 | capacitor 100nF | place (reuse removed parts) |
C3125 | capacitor 100nF | place (reuse removed parts) |
R59 | resistor 0-Ohm | place |
R60 | resistor 0-Ohm | place |
R65 | resistor 0-Ohm | place |
R67 | resistor 0-Ohm | place |
Components are located next to the 8-port ethernet phy near SoM and RJ45 connectors, covered by the black heatsink.
Software Changes
The default software images are configured for 8xRJ45 ports, and zero PCI-E. After rework images with SerDes #2 protocols 7 or 11 should be selected instead - indicated by including these numbers within their filenames, e.g. “lx2162a_rev2_som_clearfog_multi_2000_650_2900_18_11_0-daa413c.img.xz“.
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