The Cadence® Tensilica® Fusion F1 DSP is the smallest and lowest power member of the HiFi DSP family, developed for battery-constrained applications such as mobile, hearables, wearables, automotive, and IoT.  Its small area reduces SoC cost. It is ideally suited for always-on use cases with sensor fusion or voice/face trigger, along with running other DSP algorithms.


Key Benefits

Sensor Fusion

The Tensilica Fusion F1 DSP supports sensor fusion concurrent with control and signal processing and features smart power management to keep energy consumption low; in addition, several software partners bring the best sensor fusion software to the Fusion F1 DSP

Smallest DSP

The Tensilica Fusion F1 DSP for Audio is the smallest of the HiFi DSP family, reducing SoC cost

Lowest Energy DSP

The Tensilica Fusion F1 DSP has the lowest energy consumption of the HiFi DSP family

Always-on Capability

The Tensilica Fusion F1 DSP is well suited to voice trigger, face trigger, and sensor fusion functions that need to be always on while preserving battery

ISO 26262 Compliant

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


Always-On Architecture

  • Always-on Architecture
  • The Fusion F1 DSP's low-power audio buffer sharply reduces MIPS requirements, up to 8X lower than other solutions.
  • The RAM includes phrase memory and data buffers (1.6-1.8x).
  • The ROM includes recognizer code and constants for acoustic models and vocabulary.


VLIW Slots 2


Fixed-Point MACs per Cycle

32x32 1
24x24 2
32x16 2
16x16 2 or 4
Accumulator 64-bit
FPU (Optional) Integrated Scalar SP VLIW FPU
ITU Intrinsic Support Yes
Circular Buffer Support 1
Bitstream VLE/VLD Optional
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.


Functional Safety for Automotive

Cadence is committed to enabling Functional Safety applications across the Tensilica processor lineup, whether it's an off-the-shelf processor/DSP IP or a custom domain-specific processor for a specific application

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