Sim Interface; Serial Communication - u-blox LISA-C2 Series System Integration Manual

1.8 SIM interface

LISA-C200 and FW75-C200 modules feature a hardware interface to support SIM cards.
In the CDMA environment, the SIM interface is called R-UIM which stands for Removable User Indentity
Module. This card is developed for CDMA products as an extention of the GSM SIM card and its
functionality.
Please contact u-blox support for further details on SIM / R-UIM support.

1.9 Serial communication

LISA-C200 and FW75-C200 modules provide the following serial communication interfaces, where AT command
interface and Packet-Switched Data communication are concurrently available:
•
One asynchronous serial interface (UART) that provides RS-232 functionality conforming to ITU-T V.24
Recommendation [5], with limited data rate.
•
One full-speed USB 2.0 compliant interface, with maximum data rate of 12 Mb/s.
•
Only one interface is active. Default is USB, if no USB is detected then it is assumed that the UART interface
is desired.
LISA-C200 and FW75-C200 modules are designed to operate as a CDMA cellular modem, which represents the
data circuit-terminating equipment (DCE) as described by the ITU-T V.24 Recommendation [5]. A customer
application processor connected to the module through one of the interfaces represents the data terminal
equipment (DTE).
All the interfaces listed above are controlled and operated with:
•
Sprint / Aeris required AT Commands (C200 series)
•
Verizon / US Cellular required AT Commands (C200 series)
•
AT commands according to 3GPP TS 27.010 [8]
•
AT commands according to 3GPP TS 27.005 [6]
•
u-blox AT commands
For the complete list of supported AT commands and their syntax refer to the u-blox C2 series AT
Commands Manual [3].
•
The USB interface, using all the lines provided (VUSB_DET, USB_D+ and USB_D-), can be used for firmware
upgrade
To directly enable PC (or similar) connection to the module for firmware upgrade, provide direct access on
the application board to the VUSB_DET, USB_D+ and USB_D- lines of the module . Also provide access to
the PWR_ON & HW_SHUTDOWN pins, or enable the DC supply connected to the VCC pin to start the
module firmware upgrade The following sub-chapters describe serial interface configuration and provide a
detailed description of each interface for the application circuits.
For C200 modules, the diagnostics Port is always available on USB
The Diagnostics Port is available after 5 seconds of UART connectivity. It only provides logging information,
and cannot be used for AT command interaction once the UART port has been assigned as the AT
command interface. See above.
UBX-13000620 - R21
LISA-C2 series and FW75-C200 - System Integration Manual
Early Production Information System description
Page 25 of 103