User's Manual

TC65 Hardware Interface Description
Strictly confidential / Draft
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TC65_HD_V00.450 Page 4 of 96 20.04.2005
3.13.1 Speech Processing................................................................................54
3.13.2 Microphone Circuit.................................................................................54
3.13.2.1 Single-ended Microphone Input.............................................................54
3.13.2.2 Differential Microphone Input.................................................................55
3.13.2.3 Line Input Configuration with OpAmp ....................................................56
3.13.3 Loudspeaker Circuit...............................................................................57
3.13.4 Digital Audio Interface DAI.....................................................................58
3.14 Control Signals ....................................................................................................59
3.14.1 Synchronization Signal ..........................................................................59
3.14.2 Using the SYNC Pin to Control a Status LED........................................60
4 Antenna Interface........................................................................................................61
4.1 Antenna Installation .............................................................................................61
4.2 Antenna Pad ........................................................................................................63
4.2.1 Suitable Cable Types.............................................................................63
4.3 Antenna Connector..............................................................................................64
5 Electrical, Reliability and Radio Characteristics......................................................68
5.1 Absolute Maximum Ratings .................................................................................68
5.2 Operating Temperatures......................................................................................68
5.3 Pin Assignment and Signal Description...............................................................69
5.4 Power Supply Ratings .........................................................................................75
5.5 Electrostatic Discharge ........................................................................................77
5.6 Reliability Characteristics.....................................................................................78
6 Mechanics....................................................................................................................79
6.1 Mechanical Dimensions of TC65 .........................................................................79
6.2 Mounting TC65 to the Application Platform .........................................................81
6.3 Board-to-Board Application Connector ................................................................82
7 Sample Application.....................................................................................................85
8 Reference Approval ....................................................................................................87
8.1 Reference Equipment for Type Approval.............................................................87
8.2 Compliance with FCC Rules and Regulations.....................................................88
9 Appendix......................................................................................................................89
9.1 List of Parts and Accessories ..............................................................................89
9.2 Fasteners and Fixings for Electronic Equipment .................................................91
9.2.1 Fasteners from German Supplier ETTINGER GmbH ............................91
9.3 Data Sheets of Recommended Batteries ............................................................94