Product Info

LTE Standard Module Series
EC25 Series Hardware Design
EC25_Series_Hardware_Design 65 / 134
The following figure shows the simplified block diagram for Ethernet application.
Module
AR8033
Ethernet
Transformer
RJ45
SGMII
Control
MDI
Figure 27: Simplified Block Diagram for Ethernet Application
The following figure shows a reference design of SGMII interface with PHY AR8033 application.
EPHY_RST_N
119
DO
Ethernet PHY reset
1.8/2.85 V power domain
EPHY_INT_N
120
DI
Ethernet PHY interrupt
1.8 V power domain
SGMII_MDATA
121
IO
SGMII MDIO (Management Data
Input/Output) data
1.8/2.85 V power domain
SGMII_MCLK
122
DO
SGMII MDIO (Management Data
Input/Output) clock
1.8/2.85 V power domain
USIM2_VDD
128
PO
SGMII MDIO pull-up power source
Configurable power source.
1.8/2.85 V power domain.
SGMII Signal Part
SGMII_TX_M
123
AO
SGMII transmission - minus
Connect with a 0.1 μF capacitor,
and is close to the PHY side.
SGMII_TX_P
124
AO
SGMII transmission - plus
SGMII_RX_P
125
AI
SGMII receiving - plus
Connect with a 0.1 μF capacitor,
and is close to EC25 module.
SGMII_RX_M
126
AI
SGMII receiving - minus