User's Manual

LTE Module BEC CBRS-12 User Manual
24
RTS 57 DI Request to send
V
IL
min=-0.3V
V
IL
max=0.6V
V
IH
min=1.2V
V
IH
max=2.0V
1.8V power domain.
If unused, keep it
open.
RXD 58 DI Receive data
V
IL
min=-0.3V
V
IL
max=0.6V
V
IH
min=1.2V
V
IH
max=2.0V
1.8V power domain.
If unused, keep it
open.
DCD 59 DO
Data carrier
detection
V
OL
max=0.45V
V
OH
min=1.35V
1.8V power domain.
If unused, keep it
open.
TXD 60 DO Transmit data
V
OL
max=0.45V
V
OH
min=1.35V
1.8V power domain.
If unused, keep it
open.
RI 61 DO Ring indication
V
OL
max=0.45V
V
OH
min=1.35V
1.8V power domain.
If unused, keep it
open.
DTR 62 DI
Data terminal
ready, sleep mode
control
V
IL
min=-0.3V
V
IL
max=0.6V
V
IH
min=1.2V
V
IH
max=2.0V
1.8V power domain.
Pulled up by
default. Pulling
down to low level
will wake up the
module.
If unused, keep it
open.
Debug UART Interface
Pin Name Pin No. I/O Description DC Characteristics Comment
DBG_RXD 136 DI Receive data
V
IL
min=-0.3V
V
IL
max=0.6V
V
IH
min=1.2V
V
IH
max=2.0V
1.8V power domain.
If unused, keep it
open.
DBG_TXD 137 DO Transmit data
V
OL
max=0.45V
V
OH
min=1.35V
1.8V power domain.
If unused, keep it
open.
BT UART Interface (Can be multiplexed into SPI interface)
Pin Name Pin No. I/O Description DC Characteristics Comment
BT_EN 3 DO
BT function enable
control
V
OL
max=0.45V
V
OH
min=1.35V
1.8V power domain.
If unused, keep it
open.
BT_TXD 163 DO Transmit data V
OL
max=0.45V 1.8V power domain.