User`s manual

RTD Embedded Technologies, Inc. | www.rtd.com 21 COM16155ER/COM16155RER User’s Manual
5 Functional Description
5.1 Block Diagram
The Figure below shows the functional block diagram of the COM16115. The various parts of the block diagram are discussed in the following
sections.
Figure 7: COM16155 Block Diagram
5.1.1 CINTERION MC55I-W QUAD-BAND CELLULAR ENGINE (COM16155ER)
The COM16155 wireless GPRS/GSM modem is built around the Cinterion MC55i-W quad-band 850/900/1800/1900 MHz GPRS cellular
engine. It is designed both for handling complex industrial applications such as telemetry, telematics or communication, and for integration in
stationary or mobile fields all over the world.
The COM16155 is capable of powerful communication using GSM data interfacing. GPRS data rates can reach up to 85.6 kbit/s max downlink
depending on the network capacity and the network load. Engineers must take into account that GPRS data rates will vary dynamically
depending on network conditions. This must be considered when designing software and system specifications. Roaming agreements and
GPRS data support may not in all cases be available when moving from country to country. Check with your local network provider for GPRS
coverage.
The COM16155 is capable of FAX and standard SMS text messages. The data terminal rate is 9600 baud for all host commands (AT
commands). The COM16155 modem module antenna interface connector uses an OSX connector. The mating antenna connectors and cables
are supplied by RTD.
Note: The Cinterion MC55i-W module has two serial ports, labeled ASC0 and ASC1. However, only port ASC0 is available for use on the
COM16155.
ISA BUS
GPS
Antenna
Digital I/O
Connector
CN7
EPLD
Control
Logic
GSM
Module
Linx GPS
GPS
Antenna
ISA
UART
SIM
Headset
Interrupts