CDB42518 Evaluation Board For CS42518/16 Features Description The CDB42518 demonstration board is an excellent Single-Ended Analog Inputs and Outputs means for evaluating the CS42518/16 family of highly in- Integrated S/PDIF compatible Receiver tegrated multi-channel CODEC-S/PDIF receivers. CS5361 converters supply ADCIN1 and Evaluation requires an analog/digital signal source and ADCIN2 for CS42518 One Line Modes analyzer, Windows compatible computer, and power supplies. CS8406 S/PDIF Digital Audio Transmitter Header for optional external configuration of System timing can be provided by an on-board oscillator CS42518 and board or phase-locked to an S/PDIF input. RCA phono jacks are provided for the CS5361 analog inputs and CS42518 Header for external DSP serial audio I/O analog inputs and outputs. Digital data I/O is available 3.3 or 5.0 Volt Logic Interface supply via RCA phono jacks or optical connectors to/from the Demonstrates recommended layout and CS42518 and CS8406. grounding arrangements The Windows software provides a GUI to make configu- Windows compatible software interface to ration of the board easy. The software communicates configure CS42518 and inter-board through the computers parallel port, and will configure connections the hardware to allow all features of the CS42518 to be evaluated. The evaluation board may also be configured to accept external timing and data signals for operation in a user application during system development. ORDERING INFORMATION CDB42518 Evaluation Board I +18V -18V +5V GND DSP Header CS5361 Analog Inputs S/PDIF Output CS8406 (x2) Analog Analog Inputs CS42518 Filter 8-ch Analog Outputs Analog S/PDIF Output Output S/PDIF Inputs Mux Mute CPLD Ext. Control PC Parallel Port Cirrus Logic, Inc. Copyright Cirrus Logic, Inc. 2003 CDB42518 TABLE OF CONTENTS 1. SYSTEM OVERVIEW ............................................................................................................... 4 1.1 CS42518 ............................................................................................................................ 4 1.2 CS8406 .............................................................................................................................. 4 1.3 CS5361 .............................................................................................................................. 4 1.4 Crystal Oscillator ................................................................................................................ 4 1.5 Analog Input ....................................................................................................................... 4 1.6 Analog Outputs .................................................................................................................. 4 1.7 CPLD ................................................................................................................................. 5 1.8 DB-25 Computer Parallel Port ........................................................................................... 5 1.9 External Control Header ....................................................................................................5 1.10 DSP Header ..................................................................................................................... 6 1.11 LED Function Indicator ....................................................................................................6 1.12 Power ............................................................................................................................... 6 1.13 Grounding and Power Supply Decoupling ....................................................................... 6 1.14 External Control Header Signals ...................................................................................... 7 1.15 DSP Header Signals ........................................................................................................8 2. INITIAL BOARD SETUP ........................................................................................................... 9 2.1 Power Supplies .................................................................................................................. 9 2.2 Installing the Software ........................................................................................................ 9 3. CDB425XX.EXE USER S GUIDE ........................................................................................... 10 3.1 Main Window ................................................................................................................... 10 3.2 CS425XX Window ........................................................................................................... 10 3.3 Preset Scripts ................................................................................................................... 10 3.4 Quick Start Preset - Analog In to Analog Out .................................................................. 10 3.5 Quick Start Preset - Analog In to Digital Out .................................................................... 10 3.6 Quick Start Guide - Digital In to Analog Out .................................................................... 11 4. BLOCK DIAGRAMS ............................................................................................................... 12 5. SCHEMATICS AND LAYOUT ................................................................................................ 16 6. BILL OF MATERIALS ............................................................................................................ 32 7. ADDENDUM ........................................................................................................................... 36 Contacting Cirrus Logic Support For all product questions and inquiries contact a Cirrus Logic Sales Representative. To find one nearest you go to www.cirrus.com/en/contacts/sales IMPORTANT NOTICEPreliminar product information describes products that are in production, but for which full characterization data is not yet available. Advanc product infor- mation describes products that are in development and subject to development changes. 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