User's Manual
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Gemalto M2M Manuals
Electronics
Transmitter module for mobile applications
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Table Of Contents
Document history
Introduction
Related documents
Terms and abbreviations
Type approval
Safety precautions
Product concept
MC55/56 key features at a glance
Circuit concept
Application Interface
Operating modes
Power supply
Power supply pins on the board-to-board connector
Minimizing power losses
Monitoring power supply
Power up / down scenarios
Turn on MC55/56
Turn on MC55/56 using the ignition line /IGT (Power on)
Timing of the ignition process
Turn on MC55/56 using the POWER signal
Turn on MC55/56 using the RTC (Alarm mode)
Turn off MC55/56
Turn off MC55/56 using AT command
Emergency shutdown using /EMERGOFF pin
Automatic shutdown
Temperature dependent shutdown
Temperature control during emergency call
Undervoltage shutdown if battery NTC is present
Undervoltage shutdown if no battery NTC is present
Overvoltage shutdown
Automatic GPRS Multislot Class change
Charging control
Battery pack characteristics
Implemented charging technique
Operating modes during charging
Charger requirements
Power saving
No power saving (AT+CFUN=1)
NON-CYCLIC SLEEP mode (AT+CFUN=0)
CYCLIC SLEEP mode (AT+CFUN=5, 6, 7, 8)
CYCLIC SLEEP mode AT+CFUN=9
Timing of the /CTS signal in CYCLIC SLEEP modes
Wake up MC55/56 from SLEEP mode
Wake-up via /RTS0 and RTS1 (if AT+CFUN=0 or AT+CFUN=9)
Summary of state transitions (except SLEEP mode)
RTC backup
Serial interfaces
Features supported on first and second serial interface
Audio interfaces
Microphone circuit
Speech processing
DAI timing
SIM interface
Requirements for using the CCIN pin
Design considerations for SIM card holder
Control signals
Inputs
Outputs
Synchronization signal
Using the SYNC pin to control a status LED
Behavior of the /RING0 line (ASC0 interface only)
Antenna interface
Antenna installation
Antenna pad
Suitable cable types
Hirose antenna connector
Electrical, reliability and radio characteristics
Absolute maximum ratings
Operating temperatures
Electrical specifications of the application interface
Power supply ratings
Current consumption during transmit burst
Electrical characteristics of the voiceband part
Setting audio parameters by AT commands
Audio programming model
Characteristics of audio modes
Voiceband receive path
Voiceband transmit path
Air interface
Electrostatic discharge
Reliability characteristics
Mechanics
Mechanical dimensions of MC55/56
Mounting MC55/56 onto the application platform
Board-to-board connector
Mechanical dimensions of the Hirose DF12 connector
Adapter cabling
Reference Approval
Reference Equipment for Type Approval
Compliance with FCC Rules and Regulations (MC55 only)
Compliance with FCC Rules and Regulations (MC56 only)
Design example
List of parts and accessories
MC55/56 Hardware Interface Description
Confidential / Preliminary
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MC55/56_hd_v03.00
Page 94 of 104
16.08.2005
All dimensions in millimetres
Figure 40: Mechanical dimensions of MC55/56
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