Table of Contents
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USIM1_DATA
USIM1_CLK
USIM1_RST
USIM1_DET
USIM2_VDD
USIM2_DATA
USIM2_CLK
USIM2_RST
USIM2_DET
Main UART
Pin Name
MAIN_TXD
MAIN_RXD
MAIN_RI
MAIN_DTR
MAIN_DCD*
Bluetooth
UART*
Pin Name
BT_TXD
BT_RXD
BT_RTS
RG520N-AT_Hardware_Design
248
DIO
(U)SIM1 card data
(U)SIM1 card
247
DO
clock
(U)SIM1 card
244
DO
reset
(U)SIM1 card
249
DI
hot-plug detect
(U)SIM2 card
250
PO
power supply
251
DIO
(U)SIM2 card data
(U)SIM2 card
253
DO
clock
(U)SIM2 card
254
DO
reset
(U)SIM2 card
252
DI
hot-plug detect
Pin No.
I/O
Description
Main UART
68
DO
transmit
Main UART
70
DI
receive
Main UART ring
100
DO
indication
Main UART data
258
DI
terminal ready
Main UART data
261
DO
carrier detect
Pin No.
I/O
Description
Bluetooth UART
59
DO
transmit
Bluetooth UART
63
DI
receive
Request to send
61
DI
signal to the
module
5G Module Series
USIM1_VDD
1.8/2.95 V
If unused, keep it
1.8 V
open.
1.8/2.95 V
USIM2_VDD
1.8/2.95 V
If unused, keep it
1.8 V
open.
DC
Comment
Characteristics
1.8 V
DC
Comment
Characteristics
1.8 V
Connect to the
peripheral's RTS.
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