Product Info

Automotive Module Series
AG35 Hardware Design
AG35_Hardware_Design 40 / 129
 Sending data to AG35 through USB will wake up the module.
 When AG35 has URC to report, RI signal will wake up the host.
3.5.1.4. USB Application without USB Suspend Function
If the host does not support USB suspend function, USB_VBUS should be disconnected via an external
control circuit to let the module enter into sleep mode.
 Execute AT+QSCLK=1 command to enable sleep mode.
 Ensure the DTR is held in high level or keep it open.
 Disconnect USB_VBUS.
The following figure shows the connection between the module and the host.
USB_VBUS
USB_DP
USB_DM
VDD
USB_DP
USB_DM
Module Host
RI
EINT
Power
Switch
GPIO
GND GND
Figure 7: Sleep Mode Application without Suspend Function
Switching on the power switch to supply power to USB_VBUS will wake up the module.
Please pay attention to the level match shown in dotted line between the module and the host. Refer to
document [1] for more details about the module’s power management application.
3.5.2. Airplane Mode
When the module enters into airplane mode, the RF function does not work, and all AT commands
correlative with RF function will be inaccessible. This mode can be set via the following ways.
Hardware:
The W_DISABLE# pin is pulled up by default. Driving it to low level will let the module enter into airplane
mode.
NOTE