5G Module Series
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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.
Response
If the optional parameter is omitted, query the current setting:
+QCFG: "pcie/mode",<mode>
OK