LTE Standard Module Series
EG25-GL_Hardware_Design 58 / 96
4.9.2 STATUS
The STATUS pin is an open drain output for indicating the module
’s operation status. It can be connected
to a GPIO of DTE with a pull-up resistor, or as LED indication circuit as below. When the module is turned
on normally, the STATUS will present the low state. Otherwise, the STATUS will present high-impedance
state.
Table 22: Pin Definition of STATUS
The following figure shows different circuit designs of STATUS, and you can choose either one according
to your application demands.
VDD_MCU
10K
Module
STATUS
MCU_GPIO
Module
STATUS
VBAT
2.2K
Figure 30: Reference Circuits of STATUS
The status pin cannot be used as indication of module shutdown status when VBAT power supply is
removed.
4.9.3 MAIN_RI
AT+QCFG="risignaltype","physical"
can be used to configure MAIN_RI behaviors. No matter on which
port a URC is presented, the URC will trigger the behaviors of MAIN_RI pin.
The default behaviors of the MAIN_RI are shown as below, and can be changed by
AT+QCFG="urc/ri/ring"
. See
document [3]
for details.
Pin Name Pin No.
I/O
Description
Comment
STATUS
61
OD
Indicate the module
’s
operation status
An external pull-up resistor is required.
If unused, keep it open.
NOTE
Содержание EG25-GL
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