Charger Requirements; Features Supported On The First And Second Serial Interfaces Of Gsm/Gprs Engine - FALCOM I56 Hardware Description

I65/I56I HARDWARE DESCRIPTION
AT^SBC
AT^SCTM
AT^SMSO
Table 13: AT commands for charge-only
To proceed from Charge-only mode to normal operation, it is necessary to
drive the ignition line to ground. This must be implemented in your host
application as described in chapter 5.4.3.3. See also chapter
summarizes the various options of changing the mode of operation.
If your host application uses the GPIO1 pin to control a status LED as
described in chapter 5.8.2, please note that the LED is off while the GSM
engine is in Charge-only mode.

5.6.6 Charger requirements

If you are using the implemented charging technique and the charging circuit
recommended in
requirements:
a) Simple transformer power plug
Output voltage: 5.5 V...8 V (under load)
The charge current must be limited to 500 mA.
Voltage spikes that may occur while you connect or disconnect the
charger must be limited.
There must not be any capacitor on the secondary side of the power
plug (avoidance of current spikes at the beginning of charging).
b) Supplementary requirements for a) to ensure a regulated power supply
When current is switched off a voltage peak of 10 V is allowed for a
maximum 1 ms.
When current is switched on a spike of 1.6 A for 1 ms is allowed.
5.6.7 Features supported on the first and second serial interfaces of
GSM/GPRS engine
The GSM/GPRS engine of the I56/I56i module offers an unbalanced,
asynchronous serial interfaces conforming to ITU-T V.24 protocol DCE
signaling. The electrical characteristics do not comply with ITU-T V.28. The
significant levels are 0 V (for low data bit or ON condition) and 2.65 V (for
high data bit or OFF condition). See chapter
connection.
ASC0:
↔ 8-wire serial interface
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Monitor charging process
Note: While charging is in progress, no battery capacity
value is available. To query the battery capacity
disconnects the charger. If the charger connects
externally to the host device no charging parameters
are transferred to the module. In this case, the
command cannot be used.
Query temperature range, enable/disable URCs to report
critical temperature ranges.
Power down GSM engine
, the charger must be designed to meet the following
Figure 66
VERSION 1.00
5.3 to determinate the DTE-DCE
5.10 which
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