Fibocom L830-EB - 3.7 Interrupt Control

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L830-EB Hardware User Manual Page 27 of 39
3.6.2 WOWWAN#
The WOWWAN# signal is used to wake the Host (AP) when there comes the data request. The definition
of WOWWAN# signal is as follows:
Operating Mode
WOWWAN# Signal
Ringing /SMS or data requests
Pull low 1s then pull high (pulse signal).
Idle/Sleep
High level
The WOWWAN# timing is shown in Figure 3-15:
WOWWAN#
1S
Idle/Sleep
Call/SMS/Data
Idle/Sleep
Status
Figure 3-15 WOWWAN# Timing
3.7 Interrupt Control
The L830 module provides four interrupt signals, and the pin definition is as follows:
Pin
Pin Name
I/O
Reset Value
Pin Description
Type
8
W_DISABLE1#
I
PU
Enable/Disable RF network
CMOS 3.3V
25
DPR
I
PU
Body SAR detection
CMOS 1.8V
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 the Flight mode after the RF function is disabled. The
definition of W_DISABLE1# signal is as follows:
W_DISABLE1# signal
Function
High/Floating
WWAN function is enabled, the module exits the Flight mode.
Low
WWAN function is disabled, the module enters Flight mode.
3.7.2 Body SAR
The L830 module supports Body SAR 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