330HiFi Audio Processor

Product Briefs

HiFi 2 Audio DSP Product Brief

330HIFi Audio DSP Product Brief

388VDO Video DSP Product Brief

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How to Add Low-Power, Multi-Codec Digital Video and Audio to Your Next ASIC or SOC Design

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In PCs and notebook computers

Turnkey 24-bit Audio for SOC Designs

If you don't need to further optimize your core and just want a drop-in solution, the 330HiFi is for you. If you want to further optimize your core, use the Xtensa LX2 processor core and click on the HiFi 2 option in the configuration menu.

The 330HiFi core is optimized for digital audio processing. Over 50 popular audio codecs have been pre-ported to the 330HiFi core, which makes it a “drop-in" block for any SOC application requiring high quality, 24-bit audio capability.

Specialized audio instructions designed into the 330HiFi by Tensilica increase code density (reducing memory requirements) and reduce Mhz requirements (lowering power). Techniques used to define these custom instructions include Single Instruction, Multiple Data (SIMD - parallelization), VLIW (multiple operations per cycle), and flexible data path widths (optimum data widths to reduce power).

All of these advanced processor techniques are pre-built into the 330HiFi hardware, and the codecs supplied by Tensilica utilize this hardware to produce the most efficient programmable audio engine available for licensing.

Also, because it's a processor:

• It can be used for control functions in addition to audio
• It's fully programmable in C, making it easy for designers to port their own codecs if they want to.

Contents

• Features
• Benefits
• Audio Codec Support
• Frequency, area and power specs
• Block diagram
  

Features

• Based on standard 32-bit RISC architecture with integrated 24-bit audio processing instructions including Variable Length Decode (VLD)
• Dual-issue VLIW DSP with 24-bit data path and instructions customized for audio codecs
• Industry-leading low-power consumption coupled with high-fidelity 24-bit audio
• Popular digital audio software pre-ported (MP-3, AAC, WMA, AC-3, MIDI)
• Modeless switching between 16-, 24-, and 64-bit dual-issue instructions
• Dual MACs can operate as 32X16-bit/24X24-bit
• 4 Kbyte Instruction and 8 Kbyte data 2-way set associative caches, programmable write-through or write-back
• 32-bit input/output FIFO interfaces
• 64/32-bit system interface with AHB-lite bridge

Benefits

• High quality (24-bit) audio DSP supporting the widest range of audio codecs
• Fast TTM for applications requiring digital audio support
• Ultra-low power consumption increases battery life in portable applications
• Single audio engine supports many codecs, reduces hardware overhead compared to separate hard-wired hardware blocks for each codec
• Programmable engine can support new future codec implementations
• Audio engine has performance headroom to perform functions other than digital audio processing

Audio Codec Support

The following audio packages are available for the HiFi 2 Audio Engine:

• Xtensa HiFi 2 AM3D
• Xtensa HiFi 2 AMR Wideband+ Decoder
• Xtensa HiFi 2 AMR Wideband+ Encoder
• Xtensa HiFi 2 DAB+ Decoder
• Xtensa HiFi 2 Dolby Digital AC-3 Decoder, 5.1 channel
• Xtensa HiFi 2 Dolby Digital AC-3 Consumer Encoder 2, 5.1 ch
• Xtensa HiFi 2 Dolby Digital Compatible Output Encoder, 5.1 ch
• Xtensa HiFi 2 Dolby Digital Plus 5.1 ch Decoder/Converter
• Xtensa HiFi 2 Dolby Digital Plus 7.1 ch Decoder
• Xtensa HiFi 2 Dolby ProLogic II Decoder
• Xtensa HiFi 2 Dolby Digital TrueHD Decoder
• Xtensa HiFi 2 DTS
• Xtensa HiFi 2 MP3 Decoder
• Xtensa HiFi 2 MP3 Encoder
• Xtensa HiFi 2 MPEG-4 aacPlus v2 Decoder,2, 7.1 ch
• Xtensa HiFi 2 MPEG-4 aacPlus v2 Encoder
• Xtensa HiFi 2 MPEG-4 aacPlus v1 Decoder 2, 7.1 ch
• Xtensa HiFi 2 MPEG-4 aacPlus v1 Encoder
• Xtensa HiFi 2 MPEG-2/4 AAC LC Decoder 2, 7.1 ch
• Xtensa HiFi 2 MPEG-4 AAC LC Encoder
• Xtensa HiFi 2 MPEG-4 BSAC Decoder
• Xtensa HiFi 2 Ogg Vorbis Decoder
• Xtensa HiFi 2 QSound MicroQ
• Xtensa HiFi 2 RealAudio 8, 9, and 10 Decoder
• Xtensa HiFi 2 SONiVOX Sound that Rocks (see Success Story)
• Xtensa HiFi 2 Spirit DSP Audio
• Xtensa HiFi 2 SRS WOW XT, Xspace 3D and TruSound HD
• Xtensa HiFi 2 WMA Decoder
• Xtensa HiFi 2 WMA Encoder

The following voice packages are available for the HiFi 2 Audio Engine:

• Xtensa HiFi 2 AMR Narrowband Speech Codec
• Xtensa HiFi 2 AMR Wideband Speech Codec
• Xtensa HiFi 2 G.729AB Speech Codec
• Xtensa HiFi 2 SPIRIT DSP Voice Codecs

Because the Xtensa HiFi 2 Audio Engine and 330 HiFi are programmable, multiple standards can run on the same hardware, allowing the same device to play or record digital audio in different standards.

Get the 2-page Diamond Standard 330HiFi product brief.

Get the HiFi 2 Audio Engine product brief for information on all of the codecs available.

Frequency, Area and Power Specs

130G and 90G are with TSMC Sage-X libraries.
65GP is with TSMC Advantage library, Regular Vt.
65LP is with TSMC library (Synopsys), Regular Vt.
Area and frequency at worst operating condition (0.9 * Vdd, 132 C)
Power at typical operating condition (1.0 * Vdd, 25 C)
All area and speed calculations are made assuming 8KB local SRAM size
All area, power, and frequency numbers are representative only, and subject to variation based on each user's chosen process technology, cell library, and design tools.

All EDA numbers are for Sage-X libraries. Frequency and power are at worst corner. All area, power, and frequency numbers are representative only, and subject to variation based on each user's chosen process technology, cell library, and design tools. See white paper: Processor Core Power Specs: A Cautionary Tale. Includes VLD (variable length decode).

Block Diagram of the 330HiFi