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TOBY-L2 and MPCI-L2 series - System Integration Manual
UBX-13004618 - R28
System description
Page 19 of 164
1.4
Operating modes
TOBY-L2 and MPCI-L2 series modules have several operating modes. The operating modes are
defined in
and described in detail in
, providing general guidelines for operation.
General Status
Operating Mode
Definition
Power-down
Not-Powered Mode VCC or 3.3Vaux supply not present or below operating range: module is switched off.
Power-Off Mode
VCC or 3.3Vaux supply within operating range and module is switched off.
Normal Operation Idle-Mode
Module processor core runs with 32 kHz reference generated by the internal oscillator.
Active-Mode
Module processor core runs with 26 MHz reference generated by the internal oscillator.
Connected-Mode RF Tx/Rx data connection enabled and processor core runs with 26 MHz reference.
Table 5: TOBY-L2 and MPCI-L2 series modules operating modes definition
Operating Mode
Description
Transition between operating modes
Not-Powered Mode Module is switched off.
Application interfaces are not accessible.
When VCC or 3.3Vaux supply is removed, the module
enters not-powered mode.
When in not-powered mode, TOBY-L2 modules cannot be
switched on by PWR_ON, RESET_N or RTC alarm and enter
active-mode after applying VCC supply (see
When in not-powered mode, MPCI-L2 modules cannot be
switched on by RTC alarm and enter active-mode after
applying 3.3Vaux supply (see
Power-Off Mode
Module is switched off: normal shutdown by
an appropriate power-off event (see
Application interfaces are not accessible.
MPCI-L2 modules do not support Power-Off
Mode but halt mode (see
and u-blox AT
Commands Manual
, AT+CFUN=127
command).
When the module is switched off by an appropriate power-
off event (see
), the module enters power-off mode
from active-mode.
When in power-off mode, TOBY-L2 modules can be
switched on by PWR_ON, RESET_N or an RTC alarm.
When in power-off mode, TOBY-L2 modules enter the
not-powered mode after removing VCC supply.
Idle-Mode
Module is switched on with application
interfaces temporarily disabled or
suspended: the module is temporarily not
ready to communicate with an external
device by means of the application
interfaces as configured to reduce the
current consumption.
The module enters the low power idle-mode
whenever possible if power saving is enabled
by AT+UPSV (see u-blox AT Commands
Manual
) reducing current consumption
(see
With HW flow control enabled and
AT+UPSV=1 or AT+UPSV=3, the UART CTS
line indicates when the UART is enabled
(see
With HW flow control disabled, the UART
CTS line is fixed to ON state (see
).
Power saving configuration is not enabled by
default: it can be enabled by the AT+UPSV
command (see the u-blox AT Commands
Manual
The modules automatically switch from active-mode to low
power idle-mode whenever possible if power saving is
enabled (see sections
and u-blox AT
Commands Manual
, AT+UPSV).
The modules wake up from low power idle-mode to active-
mode in the following events:
Automatic periodic monitoring of the paging channel for
the paging block reception according to network conditions
(see
The connected USB host forces a remote wakeup of the
module as USB device (see
Automatic periodic enable of the UART interface to
receive / send data, with AT+UPSV=1 (see
Data received over UART, with HW flow control disabled
and power saving enabled (see
RTS input set ON by the host DTE, with HW flow control
disabled and AT+UPSV=2 (see
DTR input set ON by the host DTE, with AT+UPSV=3
(see
The connected SDIO device forces a wakeup of the
module as SDIO host (see
A preset RTC alarm occurs (see u-blox AT Commands
Manual
, AT+CALA)