Product Info

LTE-A Module Series
EM06 Hardware Design
EM06_Hardware_Design 36 / 63
The following table shows the RF status indicated by WWAN_LED# signal.
Table 13: Network Status Indications of WWAN_LED# Signal
3.9.3. WAKE_ON_WAN# Signal
The WAKE_ON_WAN# signal is an open collector signal, which requires a pull-up resistor on the host.
When a URC returns, a 1s 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 14: State of the WAKE_ON_WAN# Signal
Wake up the host
1s
High
Low
(external pull-up)
Figure 21: WAKE_ON_WAN# Behavior
WWAN_LED# Level
Description
Low Level (LED ON)
RF function is turned on
High Level (LED OFF)
RF function is turned off if any of the following circumstances occurs:
 The (U)SIM card is not powered
 W_DISABLE1# signal is at low level (airplane mode enabled).
 AT+CFUN=4 (RF function disabled)
WAKE_ON_WAN# State
Module Operation Status
Output a 1s low level pulse signal
Call/SMS/Data is incoming (to wake up the host)
Always at high level
Idle/Sleep