RM520N-GL RGMII Ethernet port issues/drops

i have ordered rework board and when load is high, loosing connection. anyone else have same problem? and what configuration to check?

sound like not enough power. what is the power source?

12v 4amp came with zyxel router and using that one. talked with seller too and no idea.

Does it stay available over USB when this occurs?

if i connect usb, connection is gone. but i didnt check if usb is available though when connection is lost. i can give a try.

with mcuzone poe board, i can connect ethernet and usb sametime even enable teetering and no issues.

firmware

AT+QGMR
RM520NGLAAR01A08M4G_01.200.01.200

For us noobs, is the small heatsink meant for the black chipset right behind the rj45 port??

it is the smaller black chip up. rtl8125

1 Like

I have a similar issue but instead the pin is not longer circular but oval. I plan on sending it to someone that does micro soldering to solder a new connector to the board.

Quick question to the round: I got the rework board and a RM520NGL (PCIe version).

The RM520NGL is not recognised at all. To double check: The PCIe version is working in the rework adapter? Thanks!

the RM520N can work in PCIE EP and PCIE RC mode. But they cannot work in the same time.
If the RM520N work in RC mode, it can work together with the PCIe PHY.
If the RM520N work in EP mode, it can work as the network adapter.

You got the PCIe version? RM50N-GLAP? Not AA?

The AP version is PCIe EP only. Theres a way to modify it to be like an AA (USB, PCIe EP and RC) but I don’t know the secrets for doing that.

You’ll need an AA version.

Ok, thanks. Yes, I have the AP version. But I would assume the AP version should be also recognised?

The AP version will not have anything show over USB unless you manually enter EDL mode by shorting the correct contacts on the back. (then youl get a QDLoader port over usb)

The only way to send AT commands or use it is over PCIe EP
I have used this in my Desktop along with the proper PCIe Drivers to get it to work before.

https://www.aliexpress.us/item/3256805348610910.html?spm=a2g0o.order_list.order_list_main.5.495c1802OmVmY4&gatewayAdapt=glo2usa

1 Like