Service Guide
Table Of Contents
- Safety Information
- About the Document
- Contents
- Table Index
- Figure Index
- 1 Introduction
- 2 Product Overview
- 3 Operating Characteristics
- 4 Application Interfaces
- 5 Antenna Interfaces
- 6 Electrical Characteristics and Reliability
- 7 Mechanical Information and Packaging
LTE-A Module Series
EM060K-GL&EM120K-GL_Hardware_Design 45 / 78
4.4.4. 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 below.
Table 20: State of the WAKE_ON_WAN#
Host
Module
WAKE_ON_WAN#
BB
GPIO
23
VCC_
IO_HOST
NOTE: The voltage level on VCC_IO_HOST
relies on the host side due to the open drain in pin 23.
Wake up the host
1 s
H
L
R
1
10K
Figure 23: WAKE_ON_WAN# Signal Reference Circuit
4.4.5. DPR
The module provides the DPR pin for body SAR detection. The signal is sent from a host system proximity
sensor to the module to provide an input trigger, which will reduce the output power in radio transmission.
High Level (LED Off)
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).
WAKE_ON_WAN# State Module Operation Status
Output a 1 s low level pulse signal Call/SMS/Data is incoming (to wake up the host)
Always at high level Idle/Sleep