u-blox LISA-C2 Series, Руководство по системной интеграции

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LISA-C2 series and FW75-C200 - System Integration Manual
UBX-13000620 - R21 Early Production Information System description
Page 11 of 103
General Status Operating Mode Definition
Power-down Not-Powered Mode VCC supply not present or below operating range: module is switched off.
Power-Off Mode VCC supply within operating range and module is switched off.
Normal Operation Idle-Mode Module processor core runs with 32 kHz as reference oscillator.
Active-Mode Module processor core runs with 19.2 MHz as reference oscillator.
Connected-Mode Voice or data call enabled and processor core runs with 19.2 MHz as reference
oscillator.
Table 3: Module operating modes definition
Operating Mode Description Transition between operating modes
Not-Powered Mode Module is switched off.
Application interfaces are not accessible. When VCC supply is removed, the module enters
not-powered mode.
Idle-Mode Application interfaces are disabled:
The module automatically enters idle-mode
whenever possible if power saving is enabled by
the AT+UPSV command (refer to
u-blox C2 series
AT Commands Manual [3]), and TxD pin is put low
by the host, reducing current consumption
Power saving configuration is not enabled by
default: it can be enabled by the AT+UPSV
command (see
u-blox C2 series AT Commands
Manual [3]).
The module automatically switches from active-mode
to idle-mode whenever possible if power saving is
enabled (refer to
u-blox C2 series AT Commands
Manual [3], AT+UPSV).
The module wakes up from 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
•
The TxD pin is released from GND by the host
•
The connected USB host forces a remote wakeup
of the module as USB device))
Active-Mode The module is ready to accept data signals from
an external device When the module is switched on by an appropriate
power-on event, the module enters active-mode from
not-powered.
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 (refer to idle to active transition
description).
When a voice call or a data call is initiated, the module
switches from active-mode to connected-mode.
Connected-Mode A voice call or a data call is in progress.
When a CSD or PSD data call is enabled, the
application interfaces are kept enabled: the
module is prepared to accept data from an
external device. When a voice call or a data call is initiated, the module
enters connected-mode from active-mode.
When a voice call or a data call is terminated, the
module returns to the active-mode.
Table 4: Module operating modes description