资 源 简 介
1. INTRODUCTION...........................................................................................................................51.1 GENERAL INFORMATION...........................................................................................................51.2 UNIVERSAL SERIAL BUS OVERVIEW........................................................................................61.3 DEFINITIONS, ACRONYMS AND ABBREVIATIONS ...................................................................102. INSTALLING THE USB-APRP EVALUATION BOARD........................................................112.1 PC HARDWARE REQUIREMENTS ...........................................................................................112.2 PC SOFTWARE REQUIREMENTS............................................................................................112.3 BOARD INSTALLATION ............................................................................................................122.4 IN CASE OF PROBLEMS ...........................................................................................................132.4.1 “USB Device not responding” or “Unknown Device”...............................................132.4.2 Device is recognized but there is no sound.............................................................. 142.4.3 Sound is still coming from the ‘old legacy’ sound system .....................................142.4.4 Recording doesn’t work or the sound quality of recorded data is bad..................142.4.5 Known bugs on the current evaluation board...........................................................153. HARDWARE DESCRIPTION.....................................................................................................163.1 INPUT AND OUTPUT CONNECTORS........................................................................................173.2 JUMPERS, HEADERS AND SWITCHES ...................................................................................173.3 CHIP PIN OUT .......................................................................................................................... 183.4 SCHEMATICS..........................................................................................................................203.5 LIST OF ACTIVE COMPONENTS .............................................................................................. 213.5.1 Integrated Circuits ........................................................................................................ 213.5.2 Transistors & LED’s .....................................................................................................213.6 LIST OF PASSIVE COMPONENTS ............................................................................................223.6.1 Resistors.......................................................................................................................223.6.2 Capacitors .....................................................................................................................233.6.3 Inductors.......................................................................................................................253.6.4 Crystal Oscillators ........................................................................................................ 254. REFERENCES............................................................................................................................265. IN CASE OF PROBLEMS..........................................................................................................26
