Dpr - Quectel RM520N-GL Hardware Design

Always at high level
Host
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*

The module provides the DPR (Dynamic Power Reduction) pin for body SAR (Specific Absorption Rate)
detection. The signal is sent from the proximity sensor of the host system to the module to provide an
input trigger, which will reduce the output power in radio transmission.
Table 24: Function of the DPR Signal
DPR Level
High/Floating
Low
NOTE
See document [3] for more details about AT+QCFG="sarcfg" command.
RM520N-GL_Hardware_Design
VCC_IO_HOST
R1
10k
GPIO
1s
H
L
Figure 23: WAKE_ON_WAN# Signal Reference Circuit
Function
NO max. transmitting power backoff
Max. transmitting power backoff by AT+QCFG="sarcfg"
Idle/Sleep
WAKE_ON_WAN#
Wake up the host
5G Module Series
Module
BB
23
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