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, through its Tensilica processor IP, brings together best-in-class products and services from industry leaders to help you accelerate the development of your SoC designs while meeting your demanding power and performance requirements. Browse the list of Tensilica processor IP service partners below.


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