Power Down; Alarm Mode; Charge-Only Mode; Charge Mode During Normal Operation - FALCOM I56 Hardware Description

I65/I56I HARDWARE DESCRIPTION

4.1.2 Power down

Normal shutdown after sending the AT^SMSO command. The Power Supply
ASIC (PSU-ASIC) disconnects the supply voltage from the base band part of
the circuit. Only a voltage regulator in the PSU-ASIC is active for powering
the RTC. Software is not active. The serial interfaces are not accessible.
Operating voltage (connected to VC5) remains applied.

4.1.3 Alarm mode

Alarm mode restricted operation launched by RTC alert function while the
module is in POWER DOWN mode. Module will not be registered to GSM
network. Limited number of AT commands is accessible.

4.1.4 Charge-only mode

Limited operation for battery powered applications. Enables charging while
module is detached from GSM network. Limited number of AT commands is
accessible. There are several ways to launch Charge-only mode:
From POWER DOWN mode: Connect charger to the charger input
pin of the external charging circuit and the POWER pin of module
when I56/I56i was powered down by AT^SMSO.
From Normal mode: Connect charger to the charger input pin of the
external charging circuit and the POWER pin of module, then enter
AT^SMSO.

4.1.5 Charge mode during normal operation

Normal operation (SLEEP, IDLE, TALK, GPRS IDLE, and GPRS DATA) and
charging are running in parallel. Charge mode changes to Charge-only mode
when the module is powered down before charging has been completed.
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VERSION 1.00
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