User's Manual

MC55/56 Hardware Interface Description
Confidential / Preliminary
s
MC55/56_hd_v03.00 Page 4 of 104 16.08.2005
3.10 Audio interfaces ...................................................................................................54
3.10.1 Microphone circuit..................................................................................55
3.10.2 Speech processing ................................................................................56
3.10.3 DAI timing ..............................................................................................56
3.11 SIM interface........................................................................................................58
3.11.1 Requirements for using the CCIN pin ....................................................59
3.11.2 Design considerations for SIM card holder............................................60
3.12 Control signals .....................................................................................................61
3.12.1 Inputs .....................................................................................................61
3.12.2 Outputs ..................................................................................................62
3.12.2.1 Synchronization signal...........................................................................62
3.12.2.2 Using the SYNC pin to control a status LED..........................................63
3.12.2.3 Behavior of the /RING0 line (ASC0 interface only)................................65
4 Antenna interface........................................................................................................66
4.1 Antenna installation .............................................................................................66
4.1.1 Antenna pad...........................................................................................68
4.1.1.1 Suitable cable types...............................................................................68
4.1.2 Hirose antenna connector......................................................................69
5 Electrical, reliability and radio characteristics.........................................................73
5.1 Absolute maximum ratings ..................................................................................73
5.2 Operating temperatures.......................................................................................73
5.3 Electrical specifications of the application interface.............................................74
5.4 Power supply ratings ...........................................................................................79
5.4.1 Current consumption during transmit burst............................................80
5.5 Electrical characteristics of the voiceband part....................................................85
5.5.1 Setting audio parameters by AT commands..........................................85
5.5.2 Audio programming model.....................................................................86
5.5.3 Characteristics of audio modes..............................................................87
5.5.4 Voiceband receive path .........................................................................88
5.5.5 Voiceband transmit path ........................................................................89
5.6 Air interface..........................................................................................................90
5.7 Electrostatic discharge.........................................................................................91
5.8 Reliability characteristics .....................................................................................92
6 Mechanics....................................................................................................................93
6.1 Mechanical dimensions of MC55/56....................................................................93
6.2 Mounting MC55/56 onto the application platform ................................................95
6.3 Board-to-board connector....................................................................................96
6.3.1 Mechanical dimensions of the Hirose DF12 connector..........................97
6.3.2 Adapter cabling......................................................................................97
7 Reference Approval ....................................................................................................98
7.1 Reference Equipment for Type Approval.............................................................98
7.2 Compliance with FCC Rules and Regulations (MC55 only) ................................99
7.3 Compliance with FCC Rules and Regulations (MC56 only) ..............................100
8 Design example.........................................................................................................101
9 List of parts and accessories...................................................................................103