SAMBA 55/56
VERSION 1.03
3 Interfaces
in
overview
The integrated modem has a sole USB connector which gathers all the
interface signals in order to facilitate its integration.
It has an integrated SIM card reader as well as a internal GSM antenna.
The concept of the integrated modem has been defined to integrate on a sole
device with follow interfaces:
Interface specifications
Interface A
Standard USB plug serial interface
Interface B
Audio interface 2,5 mm (4-pin) connector (for included
headset)
Interface C
SIM card reader for small SIM cards (3V)
Interface D
3 optical indicators LED’s
Table 5:
Interface specifications of the Modem
Figure 2:
v
iew of SAMBA interfaces.
3.1.1.1 Interface A (4-pin USB Type A connector)
The power supply for the GSM/GPRS part of the SAMBA modem has to be
a single voltage source of +5 V. It must be able to provide sufficient current
in a transmit burst which typically rises according to the USB 1.1 and 2.0
statements. Please refer to the USB 1.1 and 2.0 specifications.
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