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.

Design Considerations
Selection and Solution Guides
Tools and Software

Product Bulletin & White Papers
News Releases & Authored Articles
Similar End-Equipment Solutions

Application Notes
Reference Designs
Support & Community

Block Diagram

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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

Most useful technical documents for MP3 Player/Recorder (Portable Audio)

Board and System Design Considerations for the TMS320VC5503/06/07/09A DSPs (HTM 8 KB) 3860 views
19 Nov 2008 Read Abstract
Flash Programming Solutions for the TMS320F28xxx DSCs (HTM 8 KB) 12802 views
19 Aug 2008 Read Abstract
Configuring External Interrupts on TMS320C672x Devices (HTM 9 KB) 2251 views
11 Jul 2008 Read Abstract
Using Digital Microphone Function on TLV320AIC33 with AIC33EVM/USB-MODEM System (HTM 8 KB) 3122 views
28 Nov 2005 Read Abstract
SOCA Brief (PDF 165 KB) 1657 views
30 Sep 2005
TLV320AIC3x WinCE 5.0 Drivers (HTM 8 KB) 1351 views
27 Sep 2005 Read Abstract
The Built-In AGC Function in TSC2100/2101 & TLV320AIC26/28/32/33 Devices (HTM 8 KB) 1835 views
13 Sep 2005 Read Abstract

Selection and Solution Guides

Most useful technical documents for MP3 Player/Recorder (Portable Audio)

Selection Guides

MSP430 Ultra-Low-Power Microcontrollers Brochure 2009 (Rev. P) (PDF 1.01 MB) 52637 views
09 Jun 2009

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

Most useful technical documents for MP3 Player/Recorder (Portable Audio)

Product Bulletin

TAS3208 Product Bulletin (PDF 55 KB) 3883 views
20 Dec 2006
TAS3204: Audio System on Chip, Ideal iPod/MP3 Dock Solution Product Bulletin (PDF 54 KB) 6622 views
06 Dec 2006
TAS3108 Product Bulletin (PDF 170 KB) 3278 views
18 Apr 2006

White Papers

Audio Bitstream Coprocessor Architecture Illustration Using MP3 Decoder (HTM 8 KB) 630 views
20 Aug 2008 Read Abstract
System Software & Power Management in a SoC for Portable Audio Players (HTM 8 KB) 398 views
20 Aug 2008 Read Abstract
Automatic Level Controller for Speech Signals Using PID Controllers White Paper (HTM 9 KB) 12931 views
18 Jul 2008 Read Abstract
Cross Fade of Digital Audio Streams White Paper (HTM 8 KB) 219 views
18 Jul 2008 Read Abstract
Bitstream Buffer in Audio Coprocessor White Paper (HTM 8 KB) 236 views
18 Jul 2008 Read Abstract
Optimizing Power Consumption in DSP Designs Whitepaper (HTM 8 KB) 3031 views
25 Oct 2006 Read Abstract
Audio Compression Algorithm Overview - White Paper (PDF 81 KB) 3715 views
31 Oct 2005
A New Audio File Format for Low-Cost, High-Fidelity, Portable Audio Amplifiers (PDF 316 KB) 2592 views
26 Oct 2005
Plotting the Future of Mobile Digital Video Recorder White Paper (PDF 181 KB) 985 views
17 Oct 2005

News Releases & Authored Articles

News Releases

Date	Headline
10 Jun 2009	Two new TMS320C550x™ low power DSPs from Texas Instruments offer up to 40 percent additional battery life for voice, biometrics, medical and other portable devices
14 Apr 2009	Tiny Texas Instruments power circuit simplifies USB battery charger design
09 Mar 2009	TI introduces smallest Impedance Track™ battery fuel gauge for handheld electronics
11 Oct 2007	TI Introduces Dual-Voltage Level 200-mA LDO for Handheld Devices

Authored Articles

Optimizing for cache performance, part 2 - Jackie Brenner, Senior Member of Technical Staff, Texas Instruments, DSP Design Line
10 Jul 2006 View Article
Designing class-D audio amplifiers into portable applications - Nick Holland, Greg Hupp & Andy Liang, Texas Instruments, Planet Analog
28 Jun 2006 View Article
Selecting the right peripheral for DSP applications - Robert Oshana, Texas Instruments, DSP-FPGA.com
07 Jun 2006 View Article
Accelerating complex audio DSP algorithms with audio-enhanced DMA - Gerard Andrews and Zoran Nikolic, Texas Instruments, Embedded.com
05 Feb 2006 View Article
In 2006, Portable Infotainment Dreams Big - Vignesh Loganthan, Texas Instruments, TechOnline
24 Jan 2006 View Article
Archos and TI team up for portable multimedia - Guillaume Coffinier, Texas Instruments, Automotive Designline
29 Aug 2005 View Article

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

Design Considerations

Application Notes

Selection and Solution Guides

Selection Guides

Tools and Software

Product Bulletin & White Papers

Product Bulletin

White Papers

News Releases & Authored Articles

News Releases

Authored Articles

Similar End-Equipment Solutions

TI End-Equipment

Support and Community

Other Support