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Quectel RM520N-GL User Manual

Quectel RM520N-GL
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5G Module Series
RM520N-GL_Hardware_Design 46 / 84
you should pay attention to the selection of the device. Typically, the stray capacitance should be
less than 1.0 pF for USB 2.0, and less than 0.15 pF for USB 3.1.
Keep the ESD protection devices as close to the USB connector as possible.
If possible, reserve 0 Ω resistors on USB_DP and USB_DM traces respectively.
Table 16: USB Trace Length Inside the Module
4.3. PCIe Interface
The module provides one integrated PCIe (Peripheral Component Interconnect Express) interface.
PCI Express Base Specification Revision 4.0 compliant
Data rate up to 16 Gbps
4.3.1. PCIe Operating Mode
The module supports endpoint (EP) mode and root complex (RC) mode, and EP mode is configured by
default. In EP mode, the module is configured as a PCIe EP device. In RC mode, the module is
configured as a PCIe root complex.
AT+QCFG="pcie/mode" is used to set PCIe RC/EP mode.
Signal
Pin No.
Length (mm)
Length Difference (mm)
USB_DP
7
19.4405
0.0204
USB_DM
9
19.4201
USB_SS_RX_P
37
11.9704
0.1443
USB_SS_RX_M
35
11.8261
USB_SS_TX_P
31
8.3323
0.2789
USB_SS_TX_M
29
8.0534
AT+QCFG="pcie/mode" Set PCIe RC/EP Mode
Write Command
AT+QCFG="pcie/mode"[,<mode>]
Response
If the optional parameter is omitted, query the current setting:
+QCFG: "pcie/mode",<mode>
OK

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Quectel RM520N-GL Specifications

General IconGeneral
BrandQuectel
ModelRM520N-GL
CategoryWireless Router
LanguageEnglish