Quectel EM05-G - Dpr

LTE Standard Module Series
EM05-G Hardware Design
EM05-G_Hardware_Design 46 / 69
The state of WOWWAN# signal is shown as below.
Table 17: State of WOWWAN#
Host Module
WOWWAN#
BB
GPIO
23
VCC_IO_HOST
Wake up the host
1s
H
L
R1
10k
NOTE: The voltage level on VCC_IO_HOST depends on the host side due to the open drain in pin 23.
Figure 23: WOWWAN# Reference Circuit
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
WOWWAN# State
Module Operation Status
Output a 1 s pulse signal at low level
Call/SMS/Data is incoming (to wake up the host)
Always at high voltage level
Idle/Sleep
DPR Level
Function
High/Floating
No max. transmitting power backoff
Low
Max. transmitting power backoff by AT+QCFG="sarcfg"