Interfaces In Overview; Interface A (4-Pin Usb Type A Connector) - FALCOM SAMBA 75 User Manual

SAMBA 75 USER'S GUIDE

4 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 an integral GSM antenna.
The concept of the integrated modem has been defined to integrate on a sole
device with follow interfaces:
Interface A
Interface B
Interface C
Table 6: Interface specifications of the Modem
Figure 1: View of SAMBA 75 interfaces.

4.1.1.1 Interface A (4-pin USB Type A connector)

The power supply for the SAMBA 75 modem has to be a single voltage source of +5
V. If GPRS/EDGE data transfer is in progress, please use the Y-cable, which is
available upon request. The Y-cable provides 3 USB interfaces. Two of them are used
to connect the SAMBA 75 to the host device. While the third USB interface of the Y-
Cable (which has a thinner cable and provides the V+ and GND lines, only) has to
be plugged to a free USB port of the used host device. The third USB interface is
available for additional current (to provide sufficient current in a transmit burst which
typically rises to 600 – 700 mA) when the GPRS/EDGE data transfer is in progress.
Figure 2: Mini-USB pin-out (interface A)
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Interface specifications
Standard USB plug serial interface
SIM card reader for small SIM cards (3V) (SIM card is not included in the delivery
3 optical indicators LED's
package)
VERSION 1.01
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