Diamond 330HiFi: 24-bit Audio DSP
The Diamond 330HiFi core is optimized for digital audio processing. All popular audio codecs have been pre-ported to the Diamond 330HiFi core, which makes it a “drop-in” block for any SOC application requiring high quality, 24-bit audio capability. The Diamond provides high performance processing, while keeping the flexibility and post-silicon programmability of a standard RISC core.
Audio Codec Support includes:
| AC-3 Decoder | MPEG-4 aacPlus v2 Decoder |
| AC-3 Encoder | MPEG-4 aacPlus v2 Encoder |
| AM3D | MPEG-4 aacPlus v1 Decoder |
| AMR NB Speech | MPEG-4 aacPlus v1 Encoder |
| AMR WB Speech | MPEG-2/4 AAC LC Decoder |
| Dolby Digital Plus 5.1-channel Decoder/Converter | MPEG-2/4 AAC LC Encoder |
| Dolby Digital Plus 7.1-channel Decoder | Ogg Vorbis Decoder |
| G.729AB VoiP Codec | QSound microQ |
| MP3 Decoder | SONiVOX Sound that Rocks |
| MP3 Encoder | SRS WOW XT, Xspace 3D and TruSound HD |
| WMA Decoder | |
| WMA Encoder |
- Included in core area
- External to core area
| Key Features | Benefits |
| Dual-issue VLIW DSP with 24-bit data path & instructions customized for audio codecs | High-quality (24-bit) audio DSP supporting the widest range of audio codecs |
| 330HiFi is based on the successful HiFi1 and HiFi2 audio engines | Shipping in large volumes in cell phones, portable audio players, etc with rich set of codec availability |
| Complete compiler support for all audio DSP instruction extensions | All audio codecs written completely in C/C++ — no assembly coding required |
| Modeless intermixing of 3-issue 64-bit and single-issue 24/16-bit instructions | Very high code density; no VLIW-style code bloat |
| 32-bit input/output FIFO interfaces | Bypass system bus for high bandwidth communication |
| 8K, 2-way Instruction and Data caches | High performance on general-purpose code |
| 0-128 Kbyte instruction and dual data TCMs | Keep performance-sensitive code/data in local TCMs |
| 64/32-bit system interface with AHB-lite bridge | Drop into your existing AMBA-based systems |
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