User's Manual

LTE Module BEC CBRS-12 User Manual
20
V
IL
max=0.5V Active low.
Status Indication
Pin Name Pin No. I/O Description DC Characteristics Comment
NET_MODE 147 DO
Indicate the
module’s network
registration mode
V
OH
min=1.35V
V
OL
max=0.45V
1.8V power domain.
If unused, keep it
open.
NET_
STATUS
170 DO
Indicate the
module’s network
activity status
V
OH
min=1.35V
V
OL
max=0.45V
1.8V power domain.
If unused, keep it
open.
STATUS 171 DO
Indicate the
module’s operation
status
V
OH
min=1.35V
V
OL
max=0.45V
1.8V power domain.
If unused, keep it
open.
(U)SIM Interfaces
Pin Name Pin No. I/O Description DC Characteristics Comment
USIM1_DET 25 DI
(U)SIM1 card
insertion detection
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.
USIM1_VDD 26 PO
Power supply for
(U)SIM1 card
For 1.8V (U)SIM:
Vmax=1.9V
Vmin=1.7V
For 3.0V (U)SIM:
Vmax=3.05V
Vmin=2.75V
I
O
max=50mA
Either 1.8V or 3.0V
is supported by the
module
automatically.
USIM1_CLK 27 DO
Clock signal of
(U)SIM1 card
For 1.8V (U)SIM:
V
OL
max=0.4V
V
OH
min=1.45V
For 3.0V (U)SIM:
V
OL
max=0.4V
V
OH
min=2.3V
USIM1_RST 28 DO
Reset signal of
(U)SIM1 card
For 1.8V (U)SIM:
V
OL
max=0.4V
V
OH
min=1.45V
For 3.0V (U)SIM:
V
OL
max=0.4V