I65/I56I HARDWARE DESCRIPTION VERSION
1.00
Electronic devices can cause interference, which affects the performance of
the I56/I56i. Do not locate the antenna nearby electric devices or other
antennas.
The I56/I56i uses a MMCX antenna connector. The GSM RF connector has
impedance 50
Ω
. A dual- or tri band GSM antenna can be directly
connected to this connector. Mating plugs and cables can also be chosen
from the FALCOM GmbH. In addition to the GSM antenna, FALCOM
GmbH provides antenna cable sets which connects a MMCX connector to
the FME connector (if you are using a GSM antenna with FME connector,
only) through 20 cm RG.174 antenna cable. The ordering number of this
antenna adapter is KA07. See chapter 10.2 for more details.
8.1.3 SIM
interface
The integrated SIM interface in the I56/I56i module controls a 3 V SIM
card. This interface is fully compliant with GSM 11.11 recommendations
concerning SIM functions.
The I56/I56i requires a small SIM card, which is provided by your mobile
phone service provider. This contains the telephone number of I56/I56i you
will use, as well as other customer information.
If your SIM is larger credit-card size, it may have a snap-out area that
allows the small SIM to be removed by gentle twisting. Otherwise apply to
your service provider for a small SIM.
The SIM card must be enabled for all services that you want to use –
VOICE, DATA, and/or FAX; if in doubt contact your service provider.
Via pushing the eject button on the right side of the card holder, the card
holder can be taken off. Put the SIM card into the card holder. The bevelled
corner of SIM card has to be on the same side to bevelled corner of card
holder and the golden contact area is facing upwards. Make sure that the
SIM card is sitting firmly in the SIM card holder slot. Then insert the tray
(with SIM card) into the card reader, and push it forwards till it snaps in.
8.1.4 Serial communication signals
The physical interface to the integrated I56/I56i is performed through available
lines on the 40-pin board-to-board connector. The I56/I56i supports an
unbalanced, asynchronous serial channel 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). This interface is provided with 8-wire
support lines and ground. In order to use different voltage levels, a appropriate
level shifters has to be connected. See also subsection “Level Shifter” follow.
E.g. in order to provide RS232 compatible levels use the 3 V compatible
MAX3232 transceiver from Maxim (see figure 23) or others based on the
required levels. If a RS232 compatible serial level is obtained, then you can
directly communicate with a host device serial port. All supported variable
baud rates can be controlled from the appropriate screens in the application
software (e.g. HyperTerminal).
Refer also on the section
to determinate the DTE-DCE connection.
This confidential document is the property of FALCOM GmbH and may not be copied or circulated without permission.
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