Behaviors Of Ri - Quectel EG91 Series Hardware Design

The following table describes the characteristics of ADC interface.
Table 19: Characteristics of ADC Interface
Parameter
ADC0 Voltage Range
ADC Resolution
NOTE
1. It is prohibited to supply any voltage to ADC pins when ADC pins are not powered by VBAT.
2. It is recommended to use resistor divider circuit for ADC application.

3.17. Behaviors of RI

AT+QCFG="risignaltype","physical" can be used to configure RI behavior. See document [3] for
details.
No matter on which port URC is presented, URC will trigger the behavior of RI pin.
NOTE
URC can be outputted from UART port, USB AT port and USB modem port through configuration via
AT+QURCCFG. The default port is USB AT port.
The default behaviors of the RI are shown as below, and can be changed by AT+QCFG="urc/ri/ring".
See document [3] for details.
Table 20: Default Behaviors of RI
State
Idle
URC
EG91_Series_Hardware_Design
Min. Typ.
0.3
Response
RI keeps at high level
RI outputs 120 ms low pulse when a new URC returns
LTE Standard Module Series
Max.
VBAT_BB
15
Unit
V
bits
55 / 105