Quectel RM502Q-GL - Status; Cellular;Wlan COEX Interface; Antenna Tuner Control Interface

5G Module Series
RM502Q-GL Hardware Design
RM502Q-GL_Hardware_Design 53 / 83
4.5.6. STATUS*
RM502Q-GL 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.
4.6. Cellular/WLAN COEX Interface*
RM502Q-GL provides a cellular/WLAN COEX interface, the following table shows the pin definition of this
interface.
Table 26: Pin Definition of COEX Interface
4.7. Antenna Tuner Control Interface
The module provides ANTCTL[1:2] and RFFE pins used for antenna tuner control, which should be
routed to an appropriate antenna control circuit. More details about the interface will be added in the
future version of this document.
Table 27: Pin Definition of Antenna Tuner Control Interface
Pin No.
Pin Name
I/O
Description
DC Characteristic
59
LAA_TX_EN*
DO
Notification from SDR to WLAN while
LTE transmitting
1.8 V
60
WLAN_TX_EN*
DI
Notification from WLAN to SDR while
transmitting
1.8 V
62
COEX_RXD*
DI, PD
LTE/WLAN coexistence receive
1.8 V
64
COEX_TXD*
DO, PD
LTE/WLAN coexistence transmit
1.8 V
Pin No.
Pin Name
I/O
Description
DC Characteristic
56
RFFE_CLK
1)
DO, PD
Used for external RFFE IC
control
1.8 V
58
RFFE_DATA
1)
DO, PD
1.8 V
65
RFFE_VIO_1V8
1)
PO
Power supply for RFFE
1.8 V
Maximum output current: 50 mA