Power Up/Down Scenarios - FALCOM I56 Hardware Description

I65/I56I HARDWARE DESCRIPTION
The values stated below are measured directly at the reference points on the
I56/I56i board.
The POWER and (CRG option) pins serve as control signals for charging a
Li-Ion battery.
Signal name
VC5+
GND
POWER
Table 9: Pin description of 50-pin board-to-board connector

5.4.3 Power up/down scenarios

In general, be sure not to turn on GSM/GPRS part of the I56/I56i module while
it is out of the operating range of voltage and temperature stated in chapters
and 3.3. The GSM/GPRS part of the I56/I56i would immediately switch off
after having started and detected these inappropriate conditions.
5.4.3.1 Turn on the GSM/GPRS part of I56/I56i
The GSM/GPRS part of the I56/I56i can be activated in a variety of ways,
which are described in the following chapters:
via SOFT_ON line: starts normal operating state (see chapter 5.4.3.2)
via POWER line: starts charging algorithm (see chapter 5.4.3.3)
5.4.3.2 Turn on the I56/I56i module using the SOFT_ON line
To switch on the I56/I56i module the SOFT_ON signal needs to be set to
HIGH level for at least 100 ms. On open collector is also internally
integrated on this line, which manage the turn on procedure.
This confidential document is the property of FALCOM GmbH and may not be copied or circulated without permission.
I/O Parameter
I 4.5 V...5,5 V, I
typ
transmit burst. The minimum
operating voltage must not fall
below 4.5 V, not even in case of
voltage drop.
- 0 V
I
Description
≤ 1.6 A during Positive operating
voltage.
Ground
This line signals to the
processor that the
charger is connected.
VERSION 1.00
5.2
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