Quectel 5G Module Series Hardware Design

5G Module Series
RM500Q-AE&RM502Q-AE Hardware Design
RM500Q-AE&RM502Q-AE_Hardware_Design 42 / 86
⚫ Junction capacitance of the ESD protection device might cause influences on USB data lines, so 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 lines respectively.
4.3. PCIe Interface
The module provides one integrated PCIe (Peripheral Component Interconnect Express) interface.
⚫ PCI Express Base Specification Revision 3.0 compliant
⚫ Data rate up to 8 Gbps per lane
4.3.1. PCIe Operating Mode
The module supports endpoint (EP) mode and root complex (RC) mode. 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.
Parameter
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
If the optional parameter is specified, set PCIe RC/EP mode:
OK
If there is any error:
ERROR
Maximum Response Time
300 ms
Characteristics
The command takes effect after the module is restarted.
The configuration will be saved automatically.
<mode> Integer type. Set PCIe RC or EP mode.
0 PCIe EP mode.

Quectel 5G Module Series Specifications

General

Brand	Quectel
Model	5G Module Series
Category	Motherboard
Language	English