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Host
Note: This VCC could be the power supply of the module.
The following table shows the RF status indicated by WWAN_LED# signal.
Table 15: Network Status Indications of WWAN_LED# Signal
WWAN_LED# Level
Low Level (LED ON)
High Level (LED OFF)
3.10.4. WAKE_ON_WAN#*
The WAKE_ON_WAN# is an open drain pin, which requires a pull-up resistor on the host. When a URC
returns, a 1 s low level pulse signal will be outputted to wake up the host. The module operation status
indicated by WAKE_ON_WAN# is shown as below.
Table 16: State of the WAKE_ON_WAN# Signal
WAKE_ON_WAN# State
Output a 1 s low level pulse signal
Always at high level
RM502Q-GL_Hardware_Design
VCC
R1
330Ω
LED
GPIO
Figure 27: WWAN_LED# Reference Circuit
Description
RF function is turned on
RF function is turned off if any of the following occurs:
⚫
The (U)SIM card is not powered.
⚫
W_DISABLE1# is at low level (airplane mode enabled).
⚫
AT+CFUN=4 (RF function disabled).
Module Operation Status
Call/SMS/Data is incoming (to wake up the host)
Idle/Sleep
RM502Q-GL Hardware Design
Module
WWAN_LED#
10
5G Module Series
PMU
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