The Cadence® Tensilica® HiFi 4 DSP provides 32-bit fixed and floating-point performance, for highly demanding DSP applications in smart speakers, home entertainment, and automotive infotainment​. It is well suited for ​complex multi-mic far-field processing and wake word detection with neural network (NN) techniques​ for use in voice assistants.  It supports the latest object-based codecs for use in STB and TV products.


Key Benefits

Complex, Object-Oriented Codec

Provides efficient execution of complex audio codecs for use in TVs, STBs, and soundbars

High DSP Performance

Doubles the performance of HiFi 3z DSP for compute-intensive functions such as FFT and FIR, and accommodates the most performance-hogging algorithms such as ANC, noise suppression, and sound analytics

NN-Based Voice Assistant

Combines high DSP performance with enhanced NN performance and is an excellent choice for reliable far-field voice assistant functions for TVs, STBs, soundbars, and smart speakers

ISO 26262 Compliant

Certified as ASIL-compliant and equipped with both hardware and software safety mechanisms


  • Support for eight 32x16-bit MACs per cycle under specific conditions
  • Four very long instruction word (VLIW) slot architecture capable of issuing two 64-bit loads per cycle
  • Optional vector floating-point unit available, providing up to four single-precision IEEE floating-point MACs per cycle
  • Software compatibility with the complete HiFi DSP product line, totaling over 300 HiFi-optimized audio and voice codecs and audio enhancement software packages
  • HiFi NN library offers optimized set of library functions commonly used in NN processing (especially speech), which can easily be integrated into popular machine learning frameworks


VLIW Slots 4


Fixed-Point MACs per Cycle

32x32 4
24x24 4
32x16 up to 8
16x16 up to 8
Accumulator 64/ 72-bit
FPU (Optional) 2 Integrated 2-way SIMD Vector FPU
ITU Intrinsic Support Yes
Circular Buffer Support 2
Bitstream VLE/VLD Yes
User-Defined Instructions Yes



Cadence 通过自身的 Tensilica 处理器 IP 融合了业界领导者的一流产品和服务,可帮助您加快系统级芯片设计的开发,同时达到严苛的功耗和性能要求。浏览下方的 Tensilica 处理器 IP 服务合作伙伴列表。



Cadence 致力于在 Tensilica 处理器系列中实现功能安全应用,无论是现成可用的处理器/DSP IP,还是针对特定应用的、支持定制化的特定域处理器


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