Product Info

5G Module Series
RM500Q-AE&RM502Q-AE Hardware Design
RM500Q-AE&RM502Q-AE_Hardware_Design 46 / 83
(Specific Absorption Rate) 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.
Table 18: Function of the DPR Signal
See document [2] for more details about AT+QCFG="sarcfg" command.
3.11.6. STATUS*
RM500Q-AE&RM502Q-AE module provides two status indication pins for communication with IPQ807x
device. Pin 38 (SDX2AP_STATUS) outputs the status indication signal to IPQ807x device, and pin 68
(AP2SDX_STATUS) inputs the status indication signal from IPQ807x device.
3.12. Cellular/WLAN Interface*
RM500Q-AE&RM502Q-AE module provides a cellular/WLAN COEX interface, the following table shows
the pin definition of this interface.
Table 19: Pin Definition of COEX Interface
DPR Level
Function
High/Floating
NO max. transmitting power backoff
Low
Max. transmitting power backoff by AT+QCFG="sarcfg"
Pin No.
Pin Name
I/O
Description
Comment
62
COEX_RXD
DI
LTE/WLAN coexistence receive
1.8 V power domain
64
COEX_TXD
DO
LTE/WLAN coexistence transmit
1.8 V power domain
59
LAA_TX_EN
DO
Notification from SDR to WL when
LTE transmitting
1.8 V power domain
60
WLAN_TX_EN
DI
Notification from WL to SDR while
transmitting
1.8 V power domain
NOTE