WM8778-EV1M
w
Rev 1.1, February 2004
2
TABLE OF CONTENTS
INTRODUCTION ............................................................................................. 3
GETTING STARTED ....................................................................................... 3
EVALUATION KIT CHECKLIST ............................................................................. 3
CUSTOMER REQUIREMENTS.............................................................................. 3
EVALUATION BOARD OPERATION.............................................................. 4
POWER SUPPLIES ............................................................................................... 4
BOARD FUNCTIONALITY ..................................................................................... 4
DIGITAL INPUT...................................................................................................... 5
ANALOGUE INPUT ................................................................................................ 5
DIGITAL OUTPUT.................................................................................................. 5
ANALOGUE OUTPUT ............................................................................................ 5
INTERFACES......................................................................................................... 6
HEADERS .............................................................................................................. 6
JUMPERS .............................................................................................................. 7
SWITCHES ............................................................................................................ 8
LINKS ..................................................................................................................... 8
HARDWARE CONTROL ................................................................................. 9
SOFTWARE CONTROL................................................................................ 11
SPI INTERFACE MODE....................................................................................... 11
TWO-WIRE MODE............................................................................................... 11
REGISTER MAP .................................................................................................. 12
SERIAL INTERFACE SOFTWARE DESCRIPTION...................................... 13
SOFTWARE DOWNLOAD ................................................................................... 13
SOFTWARE INSTALLATION............................................................................... 13
SOFTWARE OPERATION ................................................................................... 14
DAC SETUP ......................................................................................................... 19
ADC SETUP ......................................................................................................... 21
LINE SETUP ........................................................................................................ 23
SCHEMATIC LAYOUT .................................................................................. 25
WM8778-EV1B PCB LAYOUT...................................................................... 33
WM8778-EV1B BILL OF MATERIAL............................................................ 37
APPENDIX .................................................................................................... 39
DAC AND ADC ALTERNATIVE AUDIO INTERFACE CONFIGURATION............ 39
EXTERNAL DSP CONNECTION TO THE WM8778-EV1B .................................. 41
ADDITIONAL WM8778-EV1B SETUP RECOMMENDATIONS ............................ 45
EVALUATION SUPPORT ............................................................................. 47
IMPORTANT NOTICE ................................................................................... 48
Содержание WM8778-EV1B
Страница 1: ...WM8778 EV1B Evaluation Board User Handbook Rev 1 1...
Страница 25: ...WM8778 EV1M w Rev 1 1 February 2004 25 SCHEMATIC LAYOUT Figure 13 Functional Diagram...
Страница 26: ...WM8778 EV1M w Rev 1 1 February 2004 26 Figure 14 Digital Input...
Страница 27: ...WM8778 EV1M w Rev 1 1 February 2004 27 Figure 15 Software Control...
Страница 28: ...WM8778 EV1M w Rev 1 1 February 2004 28 Figure 16 Level Shift...
Страница 29: ...WM8778 EV1M w Rev 1 1 February 2004 29 Figure 17 Analogue Input and Output Mute...
Страница 30: ...WM8778 EV1M w Rev 1 1 February 2004 30 Figure 18 WM8778...
Страница 31: ...WM8778 EV1M w Rev 1 1 February 2004 31 Figure 19 Analogue Output...
Страница 32: ...WM8778 EV1M w Rev 1 1 February 2004 32 Figure 20 Power...
Страница 33: ...WM8778 EV1M w Rev 1 1 February 2004 33 WM8778 EV1B PCB LAYOUT Figure 21 Top Layer Silkscreen...
Страница 34: ...WM8778 EV1M w Rev 1 1 February 2004 34 Figure 22 Top Layer...
Страница 35: ...WM8778 EV1M w Rev 1 1 February 2004 35 Figure 23 Bottom Layer...
Страница 36: ...WM8778 EV1M w Rev 1 1 February 2004 36 Figure 24 Bottom Layer Silkscreen...
