Root Complex Mode - Quectel EG12 Series Hardware Design

PCIE_RST_N
PCIE_WAKE_N
EG12 supports either Root Complex (RC) or Endpoint (EP) mode through software configuration.

3.18.1. Root Complex Mode

In this mode, the module is configured to act as a PCIe RC device. The following figure shows a reference
circuit of PCIe RC mode.
Module
PCIE_RX_P
PCIE_RX_M
100nF
C1
PCIE_TX_P
100nF
C2
PCIE_TX_M
PCIE_REFCLK_P
PCIE_REFCLK_M
PCIE_RST_N
PCIE_CLKREQ_N
PCIE_WAKE_N
GND
EG12_Hardware_Design
189 IO
190 IO
VDD_EXT
Figure 29: PCIe Interface Reference Circuit (RC Mode)
PCIe reset
PCIe wake
100nF
C3
C4 100nF
LTE-A Module Series
EG12 Hardware Design
In slave mode, it is an output
signal.
If unused, keep it open.
In master mode, it is an output
signal.
In slave mode, it is an input signal.
If unused, keep it open.
In master mode, it is an input
signal.
In slave mode, it is an output
signal.
If unused, keep it open.
WLAN
PCIE_TX_P
PCIE_TX_M
PCIE_RX_P
PCIE_RX_M
PCIE_REFCLK_P
PCIE_REFCLK_M
PCIE_RST_N
PCIE_CLKREQ_N
PCIE_WAKE_N
GND
WiFi
Antenna
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