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.

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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 (7)

Title Abstract Type Size (KB) Date Views
HTM 8 KB 19 Nov 2008 637
HTM 8 KB 19 Aug 2008 1583
HTM 9 KB 11 Jul 2008 183
HTM 8 KB 28 Nov 2005 117
PDF 165 KB 30 Sep 2005 66
HTM 8 KB 27 Sep 2005 145
HTM 8 KB 13 Sep 2005 50
    

Reference Designs

Description Part Number Company Tool Type
PFC, Resonant Half-Bridge, Buck (PFC, 42V@6A) for Digital Audio PMP5327 Texas Instruments Reference Designs

Selection and Solution Guides

Selection Guides (1)

Title Abstract Type Size (KB) Date Views
PDF 2.76 MB 06 Oct 2014 23606

Tools and Software

Name Part # Company Software/Tool Type
Code Composer Studio (CCS) Integrated Development Environment (IDE) CCSTUDIO Texas Instruments SW Development Tools, IDEs, Compilers

Product Bulletin & White Papers

Product Bulletin (3)

Title Abstract Type Size (MB) Date Views
PDF 55 KB 20 Dec 2006 109
PDF 54 KB 06 Dec 2006 356
PDF 170 KB 18 Apr 2006 116

White Papers (9)

Title Abstract Type Size (MB) Date Views
HTM 8 KB 20 Aug 2008 56
HTM 8 KB 20 Aug 2008 159
HTM 9 KB 18 Jul 2008 55
HTM 8 KB 18 Jul 2008 45
HTM 8 KB 18 Jul 2008 51
HTM 8 KB 25 Oct 2006 39
PDF 81 KB 31 Oct 2005 22
PDF 316 KB 26 Oct 2005 12
PDF 181 KB 17 Oct 2005 11

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