Overview

The CEVA-X1 is a multi-purpose combined DSP and control processor aimed at multi-mode IoT hub devices for handling cellular, LPWA, short range communication, positioning, always-on sensor-fusion, and speech processing concurrently.

The CEVA-X1 is ideal for M2M protocol stack and baseband PHY control, including LTE Cat-NB1, Cat-M1, Sigfox, LoRa, Wi-Fi 802.11n, 802.11ah, Bluetooth, BLE, and Zigbee/Thread. It also supports positioning and motion-sensing functions, including GNSS (GPS, Beidou, GLONASS, Galileo), fusion of multiple indoor positioning and activity sensors, voice activation, and sound processing.

The CEVA-X1 has been specifically designed as a single core IoT hub solution with dedicated instructions to optimize overall system power, performance, and chip area for baseband channel coding/decoding functions, as well as fusion of multiple always-on sensors. Thanks to these optimizations, 5- to 10-year single battery operation at a very low cost is easily achievable.

Control performance has been optimized on the CEVA-X1 for efficient protocol stack execution and reaches 3.6 CoreMark/MHz, which exceeds the most popular IoT CPUs on the market today.

The CEVA-X1 architecture and C compiler natively support RTOS features, ultra-fast context switches, 8/16/32/64-bit data types, supervisor and user modes, dynamic branch prediction, as well as instruction and data caches.

 

Benefits

Offers extremely flexible, low-power operation across a very wide range of multi-mode use cases including asset trackers, geo-fencing, wear-alone devices and always-on applications

Easily applied to a wide range of IoT applications
Compact and efficient single core solution
Highly scalable application-specific instruction set

Main Features

  • Unified DSP/Controller with a single SPU
  • Flexible VLIW/SIMD architecture with a compact code size
  • Highly efficient controller with a 3.6 CoreMark/MHz score

Block Diagram

CEVA_X1 Block Diagram

How LTE Cat-NB1 (NB-IoT) is Driving Cellular SoC Design Innovation

The 3GPP recently completed the standardization of a new LTE-based narrowband technology to support the emerging needs of cellular-IOT devices. Known as Cat-NB1 (formerly NB-IoT), this new low data rate category will enable the development of ultra-low power, ultra-low cost solutions that can leverage the existing LTE infrastructure for a new wave of connected devices. However, in order to efficiently leverage the Cat-NB1 standard, a new approach to cellular SoC design is required, where low data rate transfer in very large time intervals is the goal. As such, solution designers might step out of their “comfort zone” and reevaluate existing modem solutions.

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