Ublox TOBY-L2 series, Руководство по системной интеграции

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TOBY-L2 and MPCI-L2 series - System Integration Manual
UBX-13004618 - R28 System description Page 20 of 164
Operating Mode Description Transition between operating modes
Active-Mode Module is switched on with application
interfaces enabled or not suspended: the
module is ready to communicate with an
external device by means of the application
interfaces unless power saving
configuration is enabled by AT+UPSV (see
1.9.1.4 , 1.9.2.4 and u-blox AT Commands
Manual [3] ).
When the module is switched on by an appropriate
power-on event (see
1.6.1 ), the module enters active-mode
from power-off mode.
If power saving configuration is enabled by the AT+UPSV
command, the module automatically switches from active
to idle-mode whenever possible and the module wakes up
from idle to active-mode in the events listed above (see
idle-mode to active-mode transition description above).
When a RF Tx/Rx data connection is initiated or when RF
Tx/Rx is required due to a connection previously initiated,
the module switches from active to connected-mode.
Connected-Mode RF Tx/Rx data connection is in progress.
The module is prepared to accept data
signals from an external device unless
power saving configuration is enabled by
AT+UPSV (see sections
1.9.1.4 , 1.9.2.4 and
u-blox AT Commands Manual [3] ).
When a data connection is initiated, the module enters
connected-mode from active-mode.
Connected-mode is suspended if Tx/Rx data is not in
progress, due to connected discontinuous reception and
fast dormancy capabilities of the module and according to
network environment settings and scenario. In such case,
the module automatically switches from connected to
active mode and then, if power saving configuration is
enabled by the AT+UPSV command, the module
automatically switches to idle-mode whenever possible.
Vice-versa, the module wakes up from idle to active mode
and then connected mode if RF Tx/Rx is necessary.
When a data connection is terminated, the module returns
to the active-mode.
Table 6: TOBY-L2 and MPCI-L2 series modules operating modes description
Figure 3 describes the transition between the different operating modes.
TOBY-L2 Switch ON:
•
Apply VCC
MPCI-L2 Switch ON:
•
Apply 3.3Vaux
If power saving is enabled
and there is no activity for
a defined time interval
Any wake up event described
in the module operating
modes summary table above
Incoming/outgoing call or
other dedicated device
network communication
No RF Tx/Rx in progress,
Call terminated,
Communication dropped
TOBY-L2
Switch ON:
•
PWR_ON
•
RESET_N
•
RTC alarm
Not
powered
Power off
Active Connected Idle
TOBY-L2
Switch OFF:
•
AT+CPWROFF
•
RESET_N
MPCI-L2:
•
AT+CFUN=127 and
then remove 3.3Vaux
TOBY-L2:
•
Remove VCC
Figure 3: TOBY-L2 and MPCI-L2 series modules operating modes transition