CEVA-Dragonfly NB2 is optimised for Cat-NB2 (3GPP Release 14 eNB-IoT) and builds on the success of the company’s original CEVA-Dragonfly NB1. CEVA is well known for its DSP solutions, and CEVA-Dragonfly NB2 is based around the company’s CEVA-X1 DSP/control processor featuring an enhanced Instruction Set Architecture (ISA) and a unified processor environment for both physical layer and protocol stack workloads. CEVA partnered with experts in other fields to provide an integrated solution that includes a worldwide enabled RF transceiver, a Power Amplifier and the associated hardware and software modules needed for a complete eNB-IoT product.
Release 14 features many improvements over the previous release, Release 13. These improvements include a doubled data rate that requires the active power amplifier time to be halved and extends the battery life, which was a major drawback to Release 13. Other improvements include added functionality and increased security for NB-IoT applications.
To further improve battery life, the CEVA-Dragonfly NB2 solution has a new power management solution with intelligent sleep mechanisms. The design is silicon-proven at 55nm and 40nm processes. CEVA-Dragonfly NB2 also includes the fully-optimized physical layer and protocol stack firmware designed for Release 14 Cat-NB2. The addition of an on-chip embedded flash memory and controller now allows full NB-IoT design on a single die which further reduces BOM and power consumption.
CEVA-Dragonfly NB2 also includes a power-optimised GNSS hardware package, with GNSS RF receiver and multi-constellation digital front-end – speeding up acquisition and tracking tasks. The solution also supports always-listening voice trigger, voice commands and sound sensing by allowing sensing features to be implemented in software.
For security, CEVA-Dragonfly NB2 integrates smart interfaces to connect USIM or eSIM.
Development kits and reference silicon will be available in Q3.