Cirrus Logic CDB48500-USB, Руководство пользователя, Страница: 3 / 52

DS784DB1
©
Copyright 2008 Cirrus Logic, Inc. iii
CDB48500--USB Evaluation Kit Guide
Contents
Figures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-iv
Tables. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-v
Chapter 1. Introduction to the CRD48500-USB Evaluation Kit.......................... 1-1
1.1 CDB48500-USB Kit Contents and Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-1
1.1.1 CDB48500-USB Kit ........................................................................................................1-1
1.1.2 PC Requirements ...........................................................................................................1-1
1.1.3 Software Requirements ..................................................................................................1-1
1.1.4 Support Hardware Requirements ...................................................................................1-1
1.1.5 Cabling Requirements ....................................................................................................1-1
1.2 Introducing the CDB48500-USB Customer Development Kit . . . . . . . . . . . . . . . . . . . . . . . .1-1
1.2.1 Identifying CDB48500-USB Components.......................................................................1-2
1.2.2 Related Documentation ..................................................................................................1-4
1.2.2.1 Additional CDB48500 Evaluation Board Information .....................................1-4
1.2.2.2 CS485xx Family DSP Hardware Information.................................................1-4
1.2.2.3 CS485xx Family DSP Software Information ..................................................1-4
1.2.2.4 DSP Software Utility Information ...................................................................1-4
1.2.2.5 Audio CODEC Information.............................................................................1-4
1.2.2.6 S/PDIF Receiver Information .........................................................................1-4
Chapter 2. Board Setup and Installing the Evaluation Kit Software................. 2-1
2.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-1
2.1.1 Installing the Evaluation Kit Software .............................................................................2-1
2.1.2 Setting up the Evaluation Kit Boards ..............................................................................2-3
2.1.3 Connecting to a PC ........................................................................................................2-4
2.1.4 Running a Stereo PCM Application on CDB48500-USB................................................2-6
2.1.5 Downloading Other Applications ....................................................................................2-6
Chapter 3. CDB48500 System Description.......................................................... 3-1
3.1 CDB48500 System Block Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-2
3.1.1 Audio Inputs....................................................................................................................3-2
3.1.1.1 Analog Line-level Inputs ................................................................................3-2
3.1.1.2 Digital Optical Input........................................................................................3-2
3.1.1.3 Digital Coaxial Input .......................................................................................3-2
3.1.1.4 Microphone Input ...........................................................................................3-2
3.1.2 Audio Outputs.................................................................................................................3-2
3.1.2.1 Analog Line-level Outputs..............................................................................3-2
3.1.2.2 Headphone Output ........................................................................................3-3
3.1.2.3 Optical Digital Output (PCM) .........................................................................3-3
3.1.3 DC Power Input ..............................................................................................................3-3
3.1.4 Control Header ...............................................................................................................3-3
3.1.5 On-Board Voltage Selection Headers ............................................................................3-3
3.1.6 Audio Input Source Multiplexer Selection Headers ........................................................3-4
3.1.7 Cirrus Logic CS485xx Audio DSP ..................................................................................3-4
3.1.8 CS8416 S/PDIF RX ........................................................................................................3-5
3.1.9 CS42448 Audio CODEC ................................................................................................3-5
3.1.10 Memory.........................................................................................................................3-5
3.1.11 Audio Clocking..............................................................................................................3-5
3.1.11.1 Clock and Data Flow for up to 8 Channel ADC inputs .................................3-6