CLM920 TD3 LTE Module Hardware Usage Guide
Shanghai Yuge Information Technology co., LTD
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The maximum downlink rate is 150Mbs and the maximum uplink rate is 50Mbs (in
4G network).
Support for VLAN tagging.
Supports 3EEE 1588 and PTP protocols.
Can be connected to an external Ethernet PHY chip such as the AR8033, or an
external switch.
Management interface supports 1.8V/2.85V dual voltage.
The SGMII interface pin is defined as follows
：
Table 3-26 SGMII interface pin definition
Pin
Signal name
Description
IO
Remarks
119 EPHY_RST_N
Ethernet PHY reset
DO 1.8V/2.85 voltage
domain
120 EPH_INT_N
Ethernet PHY interrupt
DI
1.8 voltage domain
121 SGMII_MDATA
SGMII MDIO data
IO
1.8V/2.85 voltage
domain
122 SGMII_MCLK
SGMII MDIO clock
DO 1.8V/2.85 voltage
domain
128 USIM2_VDD
SGMII_MDATA pull-up
power supply
PO
1.8V/2.85 voltage
domain
123 SGMII_TX_M
SGMII differential data
transmission negative signal
AO
0.1
μ
F capacitor in
series near the chip end
124 SGMII_TX_P
SGMII differential data
transmission positive signal
AO
Connect 0.1
μ
F
capacitor in series near
the chip end
125 SGMII_RX_P
SGMII differential data
receiving positive signal
AI
Connect 0.1
μ
F
capacitor in series near
the module end
126 SGMII_RX_M
SGMII differential data
receiving negative signal
AI
Connect 0.1
μ
F
capacitor in series near
the module end
Ethernet application plan:
