Ethernet Components - Quectel EC2 Series Design Manualline

3.4.2. Ethernet Components

A four-layer PCB should be used when using the SGMII interface to implement the Ethernet function in
the application.

The first layer is for non-sensitive traces and 1.1 V power supply traces.

The second layer is strongly recommended for 3.3 V and 2.5 V power supply traces and ground
plane.

The third layer should be a reference ground.

The fourth layer is used for main signal traces.
GND
GND
Figure 16: Recommended PCB Layout of SGMII Interface (TE-A 4th Layer)
GND
Figure 17: Recommended Reference PCB Layout of SGMII Interface (EVB 3rd Layer)
EC2x&EG2x-G_Series_PCB_Design_Guideline
EC2x&EG2x-G Series PCB Design Guideline
GND
GND
GND
LTE Standard Module Series
GND
GND
GND
GND
AR8033
AR8033
GND
GND
Crystals
Crystals
Keepout area
Keepout area
GND
SGMII_CLK
SGMII_INT_N
SGMII_RST_N
SGMII signal
SGMII signal
traces
traces
GND
GND
SGMII_DATA
GND
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