Ublox MPCI-L2 series, Руководство по системной интеграции

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TOBY-L2 and MPCI-L2 series - System Integration Manual
UBX-13004618 - R07 Advance Information System description
Page 68 of 158
Threshold Definitions
When the application of cellular module operates at extreme temperatures with Smart Temperature Supervisor
enabled, the user should note that outside the valid temperature range the device will automatically shut down
as described above.
The input for the algorithm is always the temperature measured within the cellular module (Ti, internal). This
value can be higher than the working ambient temperature (Ta, ambient), as (for example) during transmission
at maximum power a significant fraction of DC input power is dissipated as heat This behavior is partially
compensated by the definition of the upper shutdown threshold (t
+2
) that is slightly higher than the declared
environmental temperature limit.
The sensor measures board temperature inside the shields, which can differ from ambient temperature.
1.15.18 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 AT+UPSV=1 (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.