Nordic Star Products NRD24V1 manual

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Reproduction in whole or in part is prohibited without the prior written permission of the copyright holder.

February 2007

Headset Reference Design

nRD24V1

User Guide v1.0

Contents

Main Page Contents User Guide 1 Introduction 2 System Description Page 3 Hardware description 3.1 nRD24V1 Radio module 3.1.1 Audio Codec Page 3.1.7 Specifications User Guide 3.2 Application board 3.2.1 Audio interface Revision 1.0 Page 11 of 25 3.2.1.1 Headset interface 4.7u 56 R2 C1 3.2.2 Jumpers 3.2.3 Antenna 3.2.4 Power supply 3.2.5 Buttons 3.2.6 Programming User Guide 3.3 USB dongle 3.3.1 USB Interface 3.3.2 Micro controller 3.3.3 Radio circuit 3.3.4 Power supply 3.3.5 Programming 3.3.6 Specifications 4 Hardware design guidelines 4.1 Headset 4.1.1 Antenna 4.1.2 Interfaces 4.1.2.1 Buttons 4.1.2.2 Audio interface 4.1.3 Crystals 4.1.4 MCU 4.1.5 Battery 4.2 USB dongle 4.2.1 Antenna 4.2.2 MCU 4.2.3 Crystals User Guide 5 Appendix 5.1 Bill Of Materials (BOM) Page Page Page Revision 1.0 Page 24 of 25 User Guide 5.3 RF module schematics Revision 1.0 Page 25 of 25 5.4 USB dongle schematics 1 VSSA_PLLB 37 VDD 46 VDDOUT 35