Specifications

Smart Machine Smart Decision
SIM7600G_SIM7600G-H_Hardware Design _V1.01 32 2019-10-21
Main features of SGMII:
 Ethernet Mac integrated in the module
 IEEE 802.3 Ethernet 10/100/1000Mbps, SGMII IF
 Supports IEEE 1588, Precision Time Protocol (PTP)
 Full duplex rated to 1 Gbps
 Half/full duplex for 10/100 Mbps
 Can be connected to external Ethernet PHY like AR8031/AR8033(industrial
10/100/1000Mbps), BCM89820(automotive 10/100Mbps)
 Uses 8B10B encoding of data with effective baud data rate of 1 Gbps, data rate is always 1.25
Gbps (or DDR clock is always at 625 MHz)
Main features of MDIO:
 Host mode only
 Dual voltage: 1.8 V or 2.85 V operation
 Default signal frequency: 6.25MHz
 MDIO_DATA is OD-gate, and requires an external 1.5 kΩ pull-up resistor to VMDIO.
For the AR8031/AR8033, User should provide 3.3V to power the external Ethernet PHY system
and the current should be more than 200mA.
3.6.1 Reference schematic with AR8033
Figure20: Reference SGMII circuit with AR8033
For the BCM89820, Users should provide 3.3V and 1.2V to power the external Ethernet PHY
system and the data interface of PHY. The current of 3.3V and 1.2V should be more than 100mA
and 150mA.