Quectel EC25-V User Manual page 21

Lte module
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PCM_IN
24
PCM_OUT
25
PCM_SYNC
26
PCM_CLK
27
I2C Interface
Pin Name
Pin No.
I2C_SCL
41
I2C_SDA
42
RF Interface
Pin Name
Pin No.
ANT_DIV
35
ANT_MAIN
49
ANT_GNSS
47
GPIO Pins
Pin Name
Pin No.
EC25-V_User_Manual
69
DI
PCM data input.
DO
PCM data output.
PCM data frame
IO
sync signal.
IO
PCM clock.
I/O
Description
I2C serial clock.
OD
Used for external
codec.
I2C serial data.
OD
Used for external
codec.
I/O
Description
AI
Diversity antenna.
IO
Main antenna.
AI
GNSS antenna.
I/O
Description
Confidential / Released
V
min=-0.3V
IL
V
max=0.6V
IL
V
min=1.2V
IH
V
max=2.0V
IH
V
max=0.45V
OL
V
min=1.35V
OH
V
max=0.45V
OL
V
min=1.35V
OH
V
min=-0.3V
IL
V
max=0.6V
IL
V
min=1.2V
IH
V
max=2.0V
IH
V
max=0.45V
OL
V
min=1.35V
OH
V
min=-0.3V
IL
V
max=0.6V
IL
V
min=1.2V
IH
V
max=2.0V
IH
DC Characteristics
DC Characteristics
50ohm impedance.
50ohm impedance.
50ohm impedance.
DC Characteristics
LTE Module Series
EC25-V User Manual
1.8V power domain.
If unused, keep it
open.
1.8V power domain.
If unused, keep it
open.
1.8V power domain.
In master mode, it is
an output signal. In
slave mode, it is an
input signal.
If unused, keep it
open.
1.8V power domain.
In master mode, it is
an output signal. In
slave mode, it is an
input signal.
If unused, keep it
open.
Comment
External pull-up
resistor is required.
1.8V only. If unused,
keep it open.
External pull-up
resistor is required.
1.8V only. If unused,
keep it open.
Comment
If unused, keep it
open.
If unused, keep it
open.
Comment
20 /

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