Texas Instruments TS3A227E Manuals

User's Guide SLVUAD9–December 2014 TS3A227E EVM User's Guide This document is the EVM user guide for the TS3A227E-EVM which provides an easy evaluation of TI's autonomous audio jack switch with integrated key-press detection and power off noise removal. spacer Contents 1 About this Manual............................................................................................................ 2 2 Information About Cautions and Warnings............................................................................... 2 3 Introduction ................................................................................................................... 3 3.1 Hardware Items for Operation..................................................................................... 3 4 TS3A227E-EVM Connections Overview ................................................................................. 4 4.1 TS3A227E Design Under Test (DUT)............................................................................ 4 4.2 Power................................................................................................................. 5 4.3 Test Points........................................................................................................... 6 4.4 Translator ............................................................................................................ 6 4.5 On-Board MICBIAS Output........................................................................................ 7 4.6 Key-Press Matrix.................................................................................................... 7 4.7 External CODEC Interface......................................................................................... 8 5 LaunchPad Setup ........................................................................................................... 9 6 Installing the GUI........................................................................................................... 11 7 Using the GUI............................................................................................................... 12 7.1 Connecting the LaunchPad to the EVM and PC.............................................................. 12 7.2 GUI Area Descriptions and Use................................................................................. 14 7.3 GUI Operation ..................................................................................................... 16 7.4 Using the TS3A227E to Develop a Headset................................................................... 17 7.5 Power Off Noise Removal Evaluation .......................................................................... 18 7.6 Slow Plug-In Issue ................................................................................................ 18 8 Board Documentation...................................................................................................... 19 8.1 Schematic .......................................................................................................... 19 8.2 Bill of Materials .................................................................................................... 20 8.3 PCB Layout ........................................................................................................ 22 9 Related Documentation.................................................................................................... 25 List of Figures 1 TS3A227E-EVM Block Diagram........................................................................................... 3 2 Connector to TS3A227E.................................................................................................... 4 3 Power Connections ......................................................................................................... 5 4 Breakout Test Point Headers .............................................................................................. 6 5 Translator ..................................................................................................................... 6 6 On-Board MICBIAS Output................................................................................................. 7 7 Key Press Schematic........................................................................................................ 7 8 External CODEC Interface.................................................................................................. 8 9 LaunchPad Header Connections .......................................................................................... 9 10 LaunchPad J5 Header Connections ...................................................................................... 9 11 LaunchPad LED Indicators................................................................................................ 10 LaunchPad, Code Composer Studio are trademarks of Texas Instruments. 1 SLVUAD9–December 2014 TS3A227E EVM User's Guide Submit Documentation Feedback Copyright © 2014, Texas Instruments Incorporated