Interrupt Control; W_Disable1; Bodysar; Clock Interface - Fibocom L850-GL Series Hardware Manual

3.7 Interrupt Control

The L850 module provides three interrupt signals, and the pin definition is as follows:
Pin Pin Name
8

W_DISABLE1#

25 DPR
26 W_DISABLE2#
3.7.1 W_DISABLE1#
The module provides a hardware pin to enable/disable WWAN RF function, and the function can also be
controlled by the AT command. The module enters into flight mode after the RF function is disabled. The
definition of W_DISABLE1# signal is as follows:
W_DISABLE1# signal
High/Floating
Low
Note：
The function of W_DISABLE1# is enabled by default. It can be disabled by customer's request.

3.7.2 BODYSAR

The L850 module supports BodySAR function by detecting the DPR pin. The voltage level of DPR is high
by default, and when the SAR sensor detects the closing human body, the DPR signal will be pulled down.
As the result, the module then lowers down its emission power to its default threshold value, thus reducing
the RF radiation on the human body. The threshold of emission power can be set by the AT Commands.
The definition of DPR signal is shown in the following table:
DPR signal
High/Floating
Low

3.8 Clock Interface

The L850 module supports a clock interface. It can output 26MHz clock.
Pin Pin Name
46 SYSCLK
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FIBOCOM L850-GL Series Hardware Guide
I/O Reset Value Pin Description
I PD
I PU
I PU
Function
WWAN function is enabled, the module exits the flight mode.
WWAN function is disabled, the module enters into flight mode.
Function
The module keeps the default emission power
Lower the maximum emission power to the threshold value of the module.
I/O Reset Value
O -
Enable/Disable RF network
BodySAR detection
GNSS disable signal,
Reserved
Pin Description
26M clock output used for external audio
codec and GNSS, etc., default disabled
Type
3.3/1.8V
3.3/1.8V
3.3/1.8V
Type
1.8V
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