Product Info

LTE Module Series
EC21 Hardware Design
EC21_Hardware_Design
3-55
/ 105
SGMII_MDATA
121
IO
SGMII MDIO (Management Data
Input/Output) data
1.8V/2.85V power domain
SGMII_MCLK
122
DO
SGMII MDIO (Management Data
Input/Output) clock
1.8V/2.85V power domain
USIM2_VDD
128
PO
SGMII MDIO pull-up power
source
Configurable power source.
1.8V/2.85V power domain.
External pull-up power source for
SGMII MDIO pins.
SGMII Signal Part
SGMII_TX_M
123
AO
SGMII transmission-minus
Connect with a 0.1uF capacitor,
close to the PHY side.
SGMII_TX_P
124
AO
SGMII transmission-plus
Connect with a 0.1uF capacitor,
close to the PHY side.
SGMII_RX_P
125
AI
SGMII receiving-plus
Connect with a 0.1uF capacitor,
close to EC21 module.
SGMII_RX_M
126
AI
SGMII receiving-minus
Connect with a 0.1uF capacitor,
close to EC21 module.
The following figure shows the simplified block diagram for Ethernet application.
Figure 28: Simplified Block Diagram for Ethernet Application