Product Info

LTE-A Module Series
EG12 Hardware Design
EG12_Hardware_Design 60 / 100
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.
GND
PCIE_TX_M
PCIE_TX_P
GND
PCIE_RX_M
PCIE_RX_P
PCIE_RX_M
PCIE_RX_P
PCIE_TX_M
PCIE_TX_P
C3
C4
C1
C2
100nF
100nF
100nF
100nF
Module
WLAN
PCIE_REFCLK_P
PCIE_REFCLK_M
PCIE_REFCLK_P
PCIE_REFCLK_M
PCIE_RST_N
PCIE_CLKREQ_N
PCIE_WAKE_N
PCIE_RST_N
PCIE_CLKREQ_N
PCIE_WAKE_N
R2
100K
R1
100K
VDD_EXT
NM
R3
WiFi
Antenna
Figure 29: PCIe Interface Reference Circuit (RC Mode)
3.18.2. Endpoint Mode
In this mode, the module is configured to act as a PCIe EP device. The following figure shows a reference
circuit of PCIe EP mode.