LTE Module Series
EG95 Hardware Design
EG95_Hardware_Design 21 / 81
Main UART Interface
Pin Name
Pin No.
I/O Description
DC Characteristics
Comment
RI
39
DO
Ring indicator
V
OL
max=0.45V
V
O
in=1.35V
1.8V power domain.
If unused, keep it
open.
DCD
38
DO
Data carrier
detection
V
OL
max=0.45V
V
O
in=1.35V
1.8V power domain.
If unused, keep it
open.
CTS
36
DO Clear to send
V
OL
max=0.45V
V
O
in=1.35V
1.8V power domain.
If unused, keep it
open.
RTS
37
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.
DTR
30
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.
Pull-up by default.
Low level wakes up
the module.
If unused, keep it
open.
TXD
35
DO Transmit data
V
OL
max=0.45V
V
O
in=1.35V
1.8V power domain.
If unused, keep it
open.
RXD
34
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.
Debug UART Interface
Pin Name
Pin No.
I/O Description
DC Characteristics
Comment
DBG_TXD
23
DO Transmit data
V
OL
max=0.45V
V
O
in=1.35V
1.8V power domain.
If unused, keep it
open.
DBG_RXD
22
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.
PCM Interface
Pin Name
Pin No.
I/O Description
DC Characteristics
Comment