Ublox TOBY-L2 series, System Integration Manual

Page: 67 / 164

TOBY-L2 and MPCI-L2 series - System Integration Manual
UBX-13004618 - R28 System description Page 67 of 164
1.15.16 Power saving
The power saving configuration is by default disabled, but it can be enabled using the AT+UPSV
command (for the complete description of the AT+UPSV command, see the u-blox AT Commands
Manual
[3] ).
When power saving is enabled, the module automatically enters the low power idle-mode whenever
possible, reducing current consumption (see section
1.5.1.5 , TOBY-L2 Data Sheet [1] and MPCI-L2
Data Sheet [2] ).
During the low power idle-mode, the module is not ready to communicate with an external device, as
it is configured to reduce power consumption. The module wakes up from low power idle-mode to
active-mode in the following events:
 Automatic periodic monitoring of the paging channel for the reception of the paging block sent by
the base station according to network conditions (see section
1.5.1.5 )
 The connected USB host forces a remote wakeup of the module as USB device (see section 1.9.1.4 )

Automatic periodic enable of the UART interface to receive / send data, with AT+UPSV=1 (see
1.9.2.4 )
 Data received on UART interface, with HW flow control disabled and power saving enabled (see
1.9.2.4 )
 RTS input set ON by the host DTE, with HW flow control disabled and AT+UPSV=2 (see 1.9.2.4 )

DTR input set ON by the host DTE, with AT+UPSV=3 (see 1.9.2.4 )
 The connected SDIO device forces a wakeup of the module as SDIO host (see 1.9.4 )
 A preset RTC alarm occurs (see u-blox AT Commands Manual [3] , AT+CALA)
For the definition and the description of TOBY-L2 and MPCI-L2 series modules operating modes,
including the events forcing transitions between the different operating modes, see the section
1.4 .