User's Manual

SIM7600G-H User manual
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3.6SGMII Interface
MODULE provides a SGMII interface with an Ethernet MAC embedded, users could add a PHY to connect
to the Ethernet, and the PHY device could be controlled by the MDIO interface and other dedicated signals.
Two Ethernet PHY are supported: AR8031/AR8033 (Qualcomm) and BCM89820 (Broadcom). The
AR8031/AR8033 is used for the industrial field and the BCM89820 is dedicated for the automotive field.
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
Figure 20: 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.