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How to change the PCIE1_RST output direction?

Mar 04, 2024

I inserted the EC20 LTE Module(it just use USB signals) into the mini-pcie slot.

But I can’t detect device with command “lsusb”.


I found EC20 need pcie_rst(PCIE1_RST) pin always High to enable device.

But PCIE1_RST is always low, and become high level 500ms when boot up.


this is my schemetic, how can I change the PCIE1_RST output direction?