CDB42428 Cirrus Logic

CDB42428 Evaluation Board For CS424xx Features Description The CDB42428 demonstration board is an excellent Single-Ended Analog Inputs and Outputs means for evaluating the CS424xx family of highly inte- CS8416 S/PDIF Receiver grated multi-channel CODECs. Evaluation requires an CS5361 converters supply ADCIN1 and analog/digital signal source and analyzer, Windows ADCIN2 for CS424xx One Line Modes compatible computer, and power supplies. CS8406 S/PDIF Digital Audio Transmitter System timing can be provided by an on-board oscillator Header for optional external configuration of or a master clock recovered from the S/PDIF input to the CS424xx and board CS8416. RCA phono jacks are provided for the CS5361 analog inputs and CS424xx analog inputs and outputs. Header for external DSP serial audio I/O Digital data I/O is available via RCA phono jacks or opti- 3.3 or 5.0 Volt Logic Interface supply cal connectors to the CS8416 and from the CS8406. Demonstrates recommended layout and The Windows software provides a graphical user inter- grounding arrangements face to make configuration of the board easy. The Microsoft Windows compatible software software communicates through the computers parallel interface to configure CS424xx and inter- port, and will configure the hardware to allow all features board connections of the CS424xx 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 CDB42428 Evaluation Board I +18V -18V +5V G ND DSP Header CS5361 Analog Inputs CS8406 S/PDIF O utput (x2) Analog Analog Inputs CS42428 Filter S/PDIF Input CS8416 8-ch Analog O utputs Analog Output CPLD Mute Ext. Control PC Parallel Port Cirrus Logic, Inc. Copyright Cirrus Logic, Inc. 2003 CDB42428 TABLE OF CONTENTS 1. SYSTEM OVERVIEW ............................................................................................................... 4 1.1 CS424xx ............................................................................................................................ 4 1.2 CS8406 .............................................................................................................................. 4 1.3 CS8416 .............................................................................................................................. 4 1.4 CS5361 .............................................................................................................................. 4 1.5 Crystal Oscillator ................................................................................................................ 4 1.6 Analog Input ....................................................................................................................... 4 1.7 Analog Outputs .................................................................................................................. 4 1.8 CPLD ................................................................................................................................. 6 1.9 DB-25 Computer Parallel Port ........................................................................................... 6 1.10 External Control Header .................................................................................................. 6 1.11 DSP Header ..................................................................................................................... 6 1.12 LED Function Indicator ....................................................................................................6 1.13 Power ............................................................................................................................... 6 1.14 Grounding and Power Supply Decoupling ....................................................................... 6 1.15 External Control Header Signals ...................................................................................... 7 1.16 DSP Header Signals ........................................................................................................9 2. INITIAL BOARD SETUP ......................................................................................................... 10 2.1 Power Supplies: ............................................................................................................... 10 2.2 Installing the Software: ..................................................................................................... 10 3. CDB425XX.EXE USER S GUIDE ........................................................................................... 11 3.1 Main Window ................................................................................................................... 11 3.2 CS42428 Window ............................................................................................................ 11 3.3 Preset Scripts ................................................................................................................... 11 3.4 Quick Start Preset - Analog In to Analog Out .................................................................. 11 3.5 Quick Start Preset - Analog In to Digital Out .................................................................... 11 3.6 Quick Start Guide - Digital In to Analog Out .................................................................... 12 3.7 Quick Start Preset - One-Line Mode (OLM) ..................................................................... 13 4. MUTING SCHEME ................................................................................................................. 14 5. SCHEMATICS AND LAYOUT ........................................................................................... 15 6. ADDENDUM ........................................................................................................................... 32 LIST OF FIGURES Figure 1. Instrumentation Amplifier Configuration ........................................................................... 5 Figure 2. Output Channel Mute Select .......................................................................................... 14 Figure 3. CS424xx......................................................................................................................... 15 Figure 4. Clocks, Data, and DSP Header...................................................................................... 16 Figure 5. SPDIF............................................................................................................................. 17 Figure 6. CS5361 External ADC 1 .............................................................................................. 18 Figure 7. CS5361 External ADC 2 .............................................................................................. 19 Figure 8. CS424xx Analog Inputs.................................................................................................. 20 Figure 9. Analog Outputs A1 and B1............................................................................................. 21 Figure 10. Analog Outputs A2 and B2........................................................................................... 22 Figure 11. Analog Outputs A3 and B3........................................................................................... 23 Figure 12. Analog Outputs A4 and B4........................................................................................... 24 Figure 13. DB-25, Ext Ctrl Header, Reset ..................................................................................... 25 Figure 14. CPLD............................................................................................................................ 26 Figure 15. Power ........................................................................................................................... 27 Figure 16. CS8416 ........................................................................................................................ 28 Figure 17. Component Placement and Reference Designators .................................................... 29 2