CDB4207

CDB4207 CS4207 HD Audio CODEC Development Platform Features Description Demonstrates Recommended Layout and The CDB4207 is a flexible development platform de- Grounding Arrangements signed for easy evaluation of the CS4207 HD Audio CODEC. Evaluation requires a PC with an HD Audio Analog I/O Use Standard 1/8 (3.5 mm) or 1/4 Bus connector and an analog or digital audio signal (6.35 mm) Jacks With Presence Detection source for recording. Analog I/O is provided via 1/8 or Analog Inputs (Passive) 1/4 jacks. S/PDIF I/O is provided via optical connec- Single-ended and Differential MIC Inputs tors. Two identical HD Audio Bus headers are provided Single-ended Stereo Line-level Input for connection to a PC. Analog Outputs (Passive) The CDB4207 is configured via hardware jumper set- Stereo Headphone Output with Test Loads tings to set up the analog I/O circuitry and select a Single-ended and Differential Line Outputs source for each CS4207 power supply rail. The analog Digital I/O inputs and outputs support several signal types for com- Optical S/PDIF I/O Jacks patibility with a variety of signal sources and analyzers. Digital MIC Input Headers The CS4207 can be powered from the HD Audio Bus HD Audio Bus Headers header, a PC peripheral power supply cable, or external CS4207 GPIO Header power supplies. Current sense resistors are included for Powered by HDA Bus Connection to PC easy power calculations during system development. Optionally Powered by Bench Supply or PC Peripheral Power Supply Cable (Molex) Configured by Hardware Jumpers ORDERING INFORMATION Power Supply Sources, Analog I/O Settings CDB4207 Evaluation Board Current Sense Resistors for CS4207 Supplies PC Peripheral External Bench HD Audio Bus CS4207 GPIO Lineout 1 Power Supplies Headers Header Stereo * Lineout 1 Balanced Left Regulators Jumper Select Lineout 1 MICIN Mono CS4207 Balanced Right Supplies MICIN Stereo * Current Sense Lineout 2 Resistors MICIN Balanced Stereo Left * Jumper Select Lineout 2 MICIN Balanced Balanced Left Right Jumper Select Lineout 2 CS4207 Balanced Right Line In Stereo * Headphone Output * Optical Optical S/PDIF In S/PDIF Out 1 Digital Mic Optical Headers S/PDIF Out 2 * these connectors have presence detection Copyright Cirrus Logic, Inc. 2009 NOV 09 (All Rights Reserved) CDB4207 TABLE OF CONTENTS 1. HARDWARE SYSTEM OVERVIEW ....................................................................................................... 3 1.1 CS4207 ............................................................................................................................................ 3 1.2 Analog Inputs ................................................................................................................................... 3 1.3 Analog Outputs ................................................................................................................................ 3 1.4 Digital Microphone Inputs ................................................................................................................ 4 1.5 S/PDIF I/O ........................................................................................................................................ 4 1.6 GPIO Header ................................................................................................................................... 4 1.7 HD Audio Bus Headers .................................................................................................................... 4 1.8 Power Supply Circuitry ..................................................................................................................... 5 1.9 Grounding and Power Supply Decoupling ....................................................................................... 5 2. QUICK-START GUIDE ........................................................................................................................... 6 3. SYSTEM CONNECTIONS AND JUMPER SETTINGS .......................................................................... 7 4. CDB4207 SCHEMATICS AND LAYOUT ............................................................................................ 11 5. ORDERING INFORMATION ................................................................................................................ 21 6. REVISION HISTORY ............................................................................................................................ 21 LIST OF FIGURES Figure 1.CDB4207 Quick-Start Guide ......................................................................................................... 6 Figure 2.CS4207 ....................................................................................................................................... 11 Figure 3.Analog Inputs .............................................................................................................................. 12 Figure 4.Analog Outputs ........................................................................................................................... 13 Figure 5.Digital I/O .................................................................................................................................... 14 Figure 6.Power .......................................................................................................................................... 15 Figure 7.CDB4207 Component Map ......................................................................................................... 16 Figure 8.CDB4207 Top Layer ................................................................................................................... 17 Figure 9.CDB4207 Inner Layer 1 - Ground ............................................................................................... 18 Figure 10.CDB4207 Inner Layer 2 - Power ............................................................................................... 19 Figure 11.CDB4207 Bottom Layer ............................................................................................................ 20 LIST OF TABLES Table 1. CDB4207 HD Audio Bus Header Pinout (J1 and J9) .................................................................... 5 Table 2. System Connections ..................................................................................................................... 7 Table 3. Jumper Settings ............................................................................................................................ 8 Table 4. Power Supply Indicator LEDs ..................................................................................................... 10 2 DS880DB1