L830-EA M.2 Module Hardware User Manual
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GPS signal receiving, suggest to close GPS or stop GPS data receiving while AP has detected the
TX_BLANKING pulse signal.
Pin#
Name
I/O
Description
48
TX_BLANKING
O
External GPS control signal
5.10 WAKEUP_Host Interface
L830-EA M.2 module supports WAKEUP_Host; the pin is high level by default. Output low level while
awaking host.
Pin#
Name
I/O
Description
23
WOWWAN#
O
L830-EA M.2 module wakes up the Host signal, 1.8V
signal
，
low level is available
5.11 BODY_SAR Interface
L830-EA M.2 module supports BODY_SAR
（
DPR pin
）
.
BODY_SAR is input signal(this signal is output by AP-side) and with high level by default. Low level is
available. AP can detect the human body`s nearing through distance sensor, then output the BODY_SAR
signal with low level. Once the module detect the signal through interrupt detection, it will reduce the TX
power. The reduced threshold value can be set by AT commands.
Pin#
Name
I/O
Description
25
DPR
I
BODY_SAR detection
5.12 I2C Interface
L830-EA M.2 module supports a 12C interface and with I2C master by default. This I2C used for drive
external I2C slave device, such as Audio codec and so on.
Pin#
Name
I/O
Description
42
GNSS_SDA
I/O
I2C control signal input/output ,1.8V signal
40
GNSS_SCL
O
I2C control clock signal, 1.8V signal
The signal connection of L830-EA I2C and external 12C slave device ( such as Audio Codec
）
as listed
below:
L830-EA M.2
Direction
Audio Codec I2C Port
