Quectel RG520N-AT - Page 26

5G Module Series
RG520N-AT_Hardware_Design 25 / 109
In endpoint mode, it
is an output signal.
WWAN/WLAN Application Interface
Pin Name
Pin No.
I/O
Description
DC
Characteristics
Comment
COEX_RXD
65
DI
Coexistence
UART receive
1.8 V
Only for Qualcomm
platform.
Signal interface
used for
WWAN/WLAN
coexistence
mechanism.
Pin 65 can be
multiplexed into
SDX2AP_E911
function.
Pin 67 can be
multiplexed into
SDX2AP_STATUS
function.
For details, contact
Quectel Technical
Support.
COEX_TXD
67
DO
Coexistence
UART transmit
HST_LAA_TX_
EN
135
DO
Notifies LAA/n79
transmission from
SDR transceiver to
WLAN
This pin is used for
the coexistence of
n79 and Wi-Fi 5
GHz. If n79 is
needed in your
future project with
Quectel modules,
then this pin should
be reserved;
otherwise, keep it
unconnected.
HST_WL_TX_
EN
138
DI
Notifies WLAN
transmission from
WLAN to SDR
transceiver
WLAN_PWR_
EN1
216
DO
Controls WLAN PA
power
WLAN_PWR_
EN2
219
DO
Controls other
power of WLAN