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3.11. Cellular/WLAN Interface*
RM502Q-GL provides a cellular/WLAN COEX interface, the following table shows the pin definition of this
interface.
Table 18: Pin Definition of COEX Interface
Pin No.
Pin Name
62
COEX_RXD
64
COEX_TXD
59
LAA_TX_EN
60
WLAN_TX_EN
NOTE
"*" means under development.
3.12. Antenna Tuner Control Interface*
ANTCTL[1:2] are used for antenna tuner control and 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 19: Pin Definition of Antenna Tuner Control Interface
Pin No.
Pin Name
61
SDR_GRFC15
63
SDR_GRFC14
NOTE
support based on CS2 and later.
RM502Q-GL_Hardware_Design
I/O
Description
DI
LTE/WLAN coexistence receive data
DO
LTE/WLAN coexistence transmit data
Notification from SDR to WL when
DO
LTE transmitting
Notification from WL to SDR while
DI
transmitting
I/O
Description
DO
GRFC interface dedicated for
external antenna tuner control
DO
5G Module Series
RM502Q-GL Hardware Design
Comment
1.8 V power domain
1.8 V power domain
1.8 V power domain
1.8 V power domain
DC Characteristics
V
max = 0.45 V
OL
V
min = 1.35 V
OH
V
max = 1.8 V
OH
45 / 77
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