Cadence expands Tensilica vision family with radar accelerator and automotive DSPs

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Cadence Design Systems has expanded its Tensilica IP portfolio to address the increasing computational requirements associated with automotive sensor fusion applications.

Cadence’s new high-performance Tensilica Vision 331 DSP and Vision 341 DSP combine vision, radar, lidar and AI processing in a single DSP for multi-modal, sensor-based system designs. When paired with the new Cadence Tensilica Vision 4DR Accelerator, that’s been optimised for 4D imaging radar applications, customers can now achieve both improved radar performance and higher energy efficiency.

“Automotive architectures continue to evolve with the current focus on software-defined vehicles and the growing prevalence of driver and occupancy monitoring systems,” said Raphaël Da Silva, Technology and Market Analyst at Yole Group. “With the automotive race towards eyes off, a mix of radars, cameras and Lidars are necessary to ensure optimal safety performance in all conditions. There are more than 40 sensors in a vehicle today, and imaging and 4D radar are expected to grow at a >40% CAGR from 2023 to 2028 and >131% for in-cabin use.”

The Vision 341 DSP and Vision 331 DSPs combine the Tensilica ConnX and Vision instruction-set architectures to offer SoC providers for automotive, drone, robotics and autonomous vehicle systems a highly programmable, single-DSP solution for image sensing, radar, lidar and AI workloads.

Other features include:

  • The 1024-bit Vision 341 DSP provides 2X multiply-accumulate (MAC) capability compared to the Vision 331 DSP while delivering the best performance and energy efficiency compared to GPUs or CPUs.
  • For certain 4D imaging radar workloads, the 512-bit Vision 331 DSP offers up to 4X performance improvement over the Vision 230 DSP in radar boost mode, while the Vision 341 DSP offers up to 6X performance improvement compared to the Vision 230 DSP.
  • When paired with the new DSPs for 4D imaging radar applications, the Vision 4DR accelerator offers 3X greater performance and up to 6X greater performance/area advantage compared to a Vision 341 DSP alone and 5X greater performance compared to a Vision 331 DSP alone.
  • The Vision DSPs deliver up to 2X computer vision performance improvements for computer vision filter and NMS algorithms, as well as AI improvements for quantisation and depthwise separable convolution.

Both DSPs support the Tensilica Instruction Extension (TIE) language, allowing customers to customise the instruction set.

The Cadence NeuroWeave Software Development Kit (SDK) provides neural network support for both DSPs. In addition, the Vision 341 and Vision 331 DSPs support more than 1700 OpenCV-based vision library functions, SLAM Library, Point Cloud Library (PCL), Radar library, Nature DSP library, OpenCL and the Halide compiler for computer vision, imaging, radar and lidar applications.

Both cores are automotive ready with ASIL-B hardware random faults and ASIL-D systematic fault certification.