Dpr - Quectel EM05-G Hardware Design

The state of WOWWAN# signal is shown as below.
Table 17: State of WOWWAN#
WOWWAN# State
Output a 1 s pulse signal at low level
Always at high voltage level
Host
GPIO
NOTE: The voltage level on VCC_IO_HOST depends on the host side due to the open drain in pin 23.

4.4.5. DPR*

EM05-G provides a DPR (Dynamic Power Reduction) pin for body SAR (Specific Absorption Rate)
detection. The signal is sent from the proximity sensor of a host system to EM05-G module to provide an
input trigger, which will reduce the output power in radio transmission.
Table 18: Function of the DPR
DPR Level
High/Floating
Low
EM05-G_Hardware_Design
VCC_IO_HOST
R1
10k
1s
H
L
Figure 23: WOWWAN# Reference Circuit
Function
No max. transmitting power backoff
Max. transmitting power backoff by AT+QCFG="sarcfg"
Module Operation Status
Call/SMS/Data is incoming (to wake up the host)
Idle/Sleep
WOWWAN#
Wake up the host
LTE Standard Module Series
EM05-G Hardware Design
Module
23
BB
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