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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Reference Designs

Description

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.
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Application Notes (7)

Title Abstract Type Size (KB) Date Views
HTM 8 KB 19 Nov 2008 867
HTM 8 KB 19 Aug 2008 2262
HTM 9 KB 11 Jul 2008 152
HTM 8 KB 28 Nov 2005 98
PDF 165 KB 30 Sep 2005 52
HTM 8 KB 27 Sep 2005 80
HTM 8 KB 13 Sep 2005 71
    

Selection and Solution Guides

Selection Guides (1)

Title Abstract Type Size (KB) Date Views
PDF 5.35 MB 23 Mar 2016 19040

Product Bulletin & White Papers

Product Bulletin (3)

Title Abstract Type Size (MB) Date Views
PDF 55 KB 20 Dec 2006 205
PDF 54 KB 06 Dec 2006 389
PDF 170 KB 18 Apr 2006 260

White Papers (9)

Title Abstract Type Size (MB) Date Views
HTM 8 KB 20 Aug 2008 100
HTM 8 KB 20 Aug 2008 205
HTM 9 KB 18 Jul 2008 378
HTM 8 KB 18 Jul 2008 115
HTM 8 KB 18 Jul 2008 88
HTM 8 KB 25 Oct 2006 47
PDF 81 KB 31 Oct 2005 12
PDF 316 KB 26 Oct 2005 19
PDF 181 KB 17 Oct 2005 4

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