Nordic Star Products NRD24V1 - Manual (Page 3)

Revision 1.0 Page 3 of 25
Headset Reference Design v1.0
Contents
1 Introduction ................................................................................................. 4
2 System Description ..................................................................................... 5
3 Hardware description .................................................................................. 7
3.1 nRD24V1 Radio module ...................................................................... 7
3.1.1 Audio Codec..................................................................................... 7
3.1.2 Micro controller................................................................................. 8
3.1.3 Radio circuit ..................................................................................... 8
3.1.4 Antenna matching network............................................................... 8
3.1.5 Power supply.................................................................................... 8
3.1.6 Programming.................................................................................... 8
3.1.7 Specifications ................................................................................... 9
3.2 Application board ................................................................................. 10
3.2.1 Audio interface ................................................................................. 10
3.2.2 Jumpers ........................................................................................... 12
3.2.3 Antenna............................................................................................ 12
3.2.4 Power supply.................................................................................... 12
3.2.5 Buttons ............................................................................................. 13
3.2.6 Programming.................................................................................... 13
3.3 USB dongle .......................................................................................... 14
3.3.1 USB Interface................................................................................... 15
3.3.2 Micro controller................................................................................. 15
3.3.3 Radio circuit ..................................................................................... 15
3.3.4 Power supply.................................................................................... 15
3.3.5 Programming.................................................................................... 15
3.3.6 Specifications ................................................................................... 16
4 Hardware design guidelines ........................................................................ 17
4.1 Headset ................................................................................................ 17
4.1.1 Antenna............................................................................................ 17
4.1.2 Interfaces ......................................................................................... 17
4.1.3 Crystals ............................................................................................ 18
4.1.4 MCU ................................................................................................. 18
4.1.5 Battery.............................................................................................. 18
4.2 USB dongle .......................................................................................... 19
4.2.1 Antenna............................................................................................ 19
4.2.2 MCU ................................................................................................. 19
4.2.3 Crystals ............................................................................................ 19
5 Appendix ..................................................................................................... 20
5.1 Bill Of Materials (BOM) ........................................................................ 20
5.2 Application board schematics .............................................................. 23
5.3 RF module schematics......................................................................... 24
5.4 USB dongle schematics ....................................................................... 25