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MP3 Player/Recorder (Portable Audio)

Portable audio equipment is evolving from audio to include music videos, TV shows, talking books, personal slideshows, organizers and more. TI offers a broad portfolio of products focused directly at portable audio equipment.

Block Diagram


Audio CODEC - TLV320AIC3254 Application Charger DC/DC Boost Converter DC/DC Step-Down Converter DSP Linear Regulator (LDO) Speaker Amp Sync Boost Converter USB

Design Considerations

With the continuing explosion of portable consumer audio devices ranging from MP3 Players/Recorders to smart phones with integrated audio capability, handheld GPS systems and many others, the required integrated audio feature set continues to challenge end-equipment manufacturers as well as IC designers.

Being portable typically implies that the devices are battery-operated and therefore system power consumption is a key concern.

Portable audio ICs for the consumer audio market include integrated audio codecs or audio ADCs and DACs for conversion between analog signals and digital data, headphone or speaker drivers for earpieces, headphones or built-in speakers, programmable DSPs for encoding/decoding compressed data in such formats as MP3, WMA or AAC, microcontrollers for handling system-level control and user interface functions, and wireless transceivers for transmission/reception of data over RF. The core subsystems include:

  • DSP: Performs the audio/encode functions, executes post-processing algorithms like equalization and bass management and system related tasks like file management and the user interface control.
  • Memory: Stores executing code and data/parameters.
  • Peripheral Interface: Allows user to control I/Os and display.
  • Audio CODEC: Interface with the phone lines, audio input, microphone, headphone, and speaker for digitizing the audio in the DSP. Newer generation TI audio codecs, such as the TLV320AIC3254, process sound with better audio quality and longer battery life.
  • Power Conversion: Converts the battery power to run various functional blocks.

Application Notes

  • Board and System Design Considerations for the TMS320VC5503/06/07/09A DSPs (sprab14.htm, 8 KB)
    19 Nov 2008 Abstract
  • Flash Programming Solutions for the TMS320F28xxx DSCs (spraal3.htm, 8 KB)
    19 Aug 2008 Abstract
  • Configuring External Interrupts on TMS320C672x Devices (spraaj3.htm, 9 KB)
    11 Jul 2008 Abstract
  • Using Digital Microphone Function on TLV320AIC33 with AIC33EVM/USB-MODEM System (slaa275.htm, 8 KB)
    28 Nov 2005 Abstract
  • SOCA Brief (sprt375.pdf, 165 KB)
    30 Sep 2005 Download
  • TLV320AIC3x WinCE 5.0 Drivers (slaa265.htm, 8 KB)
    27 Sep 2005 Abstract
  • The Built-In AGC Function in TSC2100/2101 & TLV320AIC26/28/32/33 Devices (slaa260.htm, 8 KB)
    13 Sep 2005 Abstract
    

Tools and Software

Name Part # Company Software/Tool Type
Code Composer Studio IDE CCSTUDIO Texas Instruments Code Composer Studio(TM) IDE

Product Bulletin & White Papers

Product Bulletin

  • TAS3208 Product Bulletin (sprt413.pdf, 55 KB)
    20 Dec 2006 Download
  • TAS3204: Audio System on Chip, Ideal iPod/MP3 Dock Solution Product Bulletin (sprt410.pdf, 54 KB)
    06 Dec 2006 Download
  • TAS3108 Product Bulletin (sprt393.pdf, 170 KB)
    18 Apr 2006 Download

White Papers

  • Audio Bitstream Coprocessor Architecture Illustration Using MP3 Decoder (spraaw3.htm, 8 KB)
    20 Aug 2008 Abstract
  • System Software & Power Management in a SoC for Portable Audio Players (spraaw6.htm, 8 KB)
    20 Aug 2008 Abstract
  • Automatic Level Controller for Speech Signals Using PID Controllers White Paper (spraaj4.htm, 9 KB)
    18 Jul 2008 Abstract
  • Cross Fade of Digital Audio Streams White Paper (spraaj5.htm, 8 KB)
    18 Jul 2008 Abstract
  • Bitstream Buffer in Audio Coprocessor White Paper (spraaj6.htm, 8 KB)
    18 Jul 2008 Abstract
  • Optimizing Power Consumption in DSP Designs Whitepaper (spry089.htm, 8 KB)
    25 Oct 2006 Abstract
  • Audio Compression Algorithm Overview - White Paper (spry074.pdf, 81 KB)
    31 Oct 2005 Download
  • A New Audio File Format for Low-Cost, High-Fidelity, Portable Audio Amplifiers (spry076.pdf, 316 KB)
    26 Oct 2005 Download
  • Plotting the Future of Mobile Digital Video Recorder White Paper (spry068.pdf, 181 KB)
    17 Oct 2005 Download

News Releases & Authored Articles

News Releases

Date Headline
11 Oct 2007 TI Introduces Dual-Voltage Level 200-mA LDO for Handheld Devices
08 Jun 2007 TI Introduces 1.2-A High-Brightness Flashlight LED Driver with I2C-Compatible Interface
09 Jan 2007 TI Tunes in to Digital TV and MP3 Player Docking Station Markets with New Audio Processors
13 Dec 2006 TI's DirectPath™ Amplifier Delivers Industry's Highest Audio Performance and Lowest Quiescent Current for Cell Phones and Portable Audio Players

Authored Articles

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