LTE Standard Module Series
EG25-GL_Hardware_Design 54 / 96
The following table describes the characteristic of ADC function.
Table 18: Characteristic of ADC
1. ADC input voltage must not exceed that of VBAT_BB.
2. It is prohibited to supply any voltage to ADC pins when VBAT power supply is removed.
3. It is recommended to use a resistor divider circuit for ADC application.
4.8 SGMII Interface
The module includes an integrated Ethernet MAC with four SGMII data signals, two management signals
and two control signals. The key features of the SGMII interface are shown below:
⚫
IEEE802.3 compliant
⚫
Supports 10/100/1000 Mbps Ethernet work mode
⚫
Supports maximum 150 Mbps (DL)/50 Mbps (UL) for 4G network
⚫
Supports VLAN tagging
⚫
Supports IEEE1588 and Precision Time Protocol (PTP)
⚫
Can be used to connect to external Ethernet PHY like AR8033, or to an external switch
⚫
Management interfaces support dual voltage 1.8/2.85 V
The following table shows the pin definition of SGMII interface.
Table 19: Pin Definition of SGMII Interface
Parameter
Min.
Typ.
Max.
Unit
ADC0 Voltage Range
0.3
-
VBAT_BB
V
ADC1 Voltage Range
0.3
-
VBAT_BB
V
ADC Resolution
-
15
-
bits
Pin Name
Pin No.
I/O
Description
Comment
Control and Management Signals
SGMII_RST_N 119
DO
Ethernet PHY reset
1.8/2.85 V power domain.
If unused, keep it open.
NOTE
