User's Manual
Date: 2010/02/04
Version: 1.0
Status: Released
3/22 ACM8068 HW Application Manual V1.0 ©Copyright 2010, AMOD Technology
Table of Contents
TABLE OFCONTENTS.......................................................................................................................3
LISTOFTABLES............................................................................................................................... .. 4
LISTOFFIGURES...............................................................................................................................4
1. ACM8068KEYFEATURES......................................................................................................5
2. SYSTEMARCHITECTURE........................................................................................................6
3. POWERSUPPLYRECOMM ENDATIONS...............................................................................7
3.1 POWERSUPPLYGENERALITIES.................................................................................................7
3.2 VOLTAGEVERSUSDISTANCE......................................................................................................7
3.3 DESIGNRECOMMENDATION.......................................................................................................8
3.3.1 POWERSUPPLYSELECTION..................................................................................................................8
3.3.2 POWERSUPPLYCIRCUITRECOMMENDATION...................................................................................8
3.3.3 POWERON&RESETCIRCUITRECOMMENDATION...........................................................................9
4. INTERFACES..............................................................................................................................10
4.1 UARTINTERFACE.....................................................................................................................10
4.1.1 UARTINTERFACECHARACTERISTICANDPINOUTDESCRIPTION................................................10
4.1.2 UART0INTERFACEREFERENCECIRCUITDESIGN...........................................................................11
4.2 AUDIOINTERFACE.....................................................................................................................11
4.2.1 AUDIOTRACKANDPCBLAYO UT RECOMMENDATION...................................................................11
4.2.2 MICROPHONEINPUTS..........................................................................................................................12
4.2.3 AUDIOMODE.........................................................................................................................................12
4.3 SIMINTERFACE.........................................................................................................................13
4.3.1 SIMINTERFACECIRCUITDESIGN.......................................................................................................13
4.3.2 SIMLAYOUT..........................................................................................................................................13
4.3.3 SIMCARDINTERFACE.........................................................................................................................14
4.4 RFINTERFACEDESIGN.............................................................................................................14
4.5 LEDINDICATORS......................................................................................................................16
5. POWERON/OFFPROCEDURE............................................................................................17
6. ELECTRICAL&ENVIRONMENTALCHARACTERISTICS...............................................19
7. APPENDIX1.SUMMARYOFPINOUT...............................................................................20
8. APPENDIX2.PCBPADLANDPATTERN...........................................................................22