4 Circuit Design
Copyright © Fibocom Wireless Inc.
41
4.3
Operating Mode
4.3.1
Flight mode
The following table describes the W_DISABLE# pin of the LC116-LA module.
Table 39. Flight mode interface
Pin No. Pin Name
I/O
Power
domain
Description
54
W_DISABLE#/BT_PCM_IN DI 1.8 V
Flight mode control/PCM input signal
LC116-LA module supports two ways to enter flight mode:
Table 40. Flight mode interface
1
Hardware
I/O
interface
button
control
Send AT+WDISABLEEN=1 to enable W_DISABLE# and pull
up or disconnect the W_DISABLE# pin (pull up by default).
The module enters standard mode. When this pin is pulled
down, the module enters the flight mode.
2
AT
command
control
Run the AT+CFUN=4 command to enter flight mode
Run the AT+CFUN=1 command to enter the standard
mode
4.3.2
Sleep
4.3.2.1
USB Application (USB Suspend Not Supported and VBUS
Supported)
If the host does not support the USB Suspend function, the module can enter the sleep
mode by disconnecting USB_VBUS through the external control circuit.
