Product Info

LTE Standard Module Series
EC25 Hardware Design
EC25_Hardware_Design 62 / 112
3.17. Behaviors of RI
AT+QCFG="risignaltype","physical" command can be used to configure RI behavior.
No matter on which port a URC is presented, the URC will trigger the behavior of RI pin.
URC can be outputted from UART port, USB AT port and USB modem port through configuration via
AT+QURCCFG command. The default port is USB AT port.
In addition, RI behavior can be configured flexibly. The default behavior of the RI is shown as below.
Table 21: Behaviors of RI
The RI behavior can be changed by AT+QCFG="urc/ri/ring" command. Please refer to document [2]
for details.
3.18. SGMII Interface
EC25 includes an integrated Ethernet MAC with an SGMII interface and two management interfaces, and
key features of the SGMII interface are shown below:
 IEEE802.3 compliance
 Support 10M/100M/1000M Ethernet work mode
 Support maximum 150Mbps (DL)/50Mbps (UL) for 4G network
 Support VLAN tagging
 Support 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 1.8V/2.85V
The following table shows the pin definition of SGMII interface.
State Response
Idle RI keeps at high level
URC RI outputs 120ms low pulse when a new URC returns
NOTE