CLM920 TD3 LTE Module Hardware Usage Guide
Shanghai Yuge Information Technology co., LTD
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when not in use
Debug serial port
11
DBG_RXD
DI
Serial data reception
please keep it floating
when not in use
12
DBG_TXD
DO
Serial data transmission
please keep it floating
when not in use
USIM interface
Pin Pin definition
IO
Functional description
Remarks
13
USIM_DET
DI
USIM card detection
please keep it floating when not in
use
14
USIM_VDD
PO
USIM
card
power
supply
Module automatically recognizes
1.8V or 3V USIM card
15
USIM_DATA
IO
USIM card data
16
USIM_CLK
DO USIM card clock
17
USIM_RST
DO USIM card reset
GPIO pin
Pin
Pin definition
IO
Functional description
Remarks
1
WAKEUP_IN
DI
Sleep mode control
2
AP_READY
DI
Sleep state detection
During development (keep
empty when not in use)
3
GPIO_1
IO
This pin function has
not been defined
RESERVE, please keep it
floating
4
W_DISABLE# DI
Flight mode control
During development (keep
empty when not in use)
5
GPIO_2
PI
This pin function has
not been defined
RESERVE, please keep it
floating
Module status indication interface
Pin
Pin definition
IO
Functional description
Remarks
6
NET_STATUS OD
Module work network status
please keep it floating
