原标题：ADI ADSP BF70x系列民用无人机解决方案

　　ADI公司的民用无人机解决方案采用400MHz ADSP BF70x系列Blackfin处理器作为飞行控制器,用于室内定位的高性能图像处理(光流)和雷达信号处理.本文介绍了ADSP BF70x系列主要特性,框图和Blackfin+处理器核框图,ADI无人系统业务主要挑战和系统设计考虑,民用无人机信号链以及ADI无人系统业务主要特色产品.

　　The ADSP-BF70x processor is a member of the Blackfin® family of products. The Blackfin processor combines a dual- MAC 16-bit state-of-the-art signal processing engine, the advantages of a clean, orthogonal RISC-like microprocessor instruction set, and single-instruction, multiple-data (SIMD) multimedia capabilities into a single instruction-set architec-ture. New enhancements to the Blackfin+ core add 32-bit MAC and 16-bit complex MAC support, cache enhancements, branch prediction and other instruction set improvements—all while maintaining instruction set compatibility to previous Blackfin products.

　　The processor offers performance up to 400 MHz, as well as low static power consumption. Produced with a low-power and low-voltage design methodology, they provide world-class power management and performance. By integrating a rich set of industry-leading system peripherals and memory (shown in Table 1), the Blackfin processor is the platform of choice for next-generation applications that require RISC-like programmability, multimedia support, and leading-edge signal processing in one integrated package. These applica-tions span a wide array of markets, from automotive systems to embedded industrial, instrumentation, video/image analysis, biometric and power/motor control applications.

　　ADSP BF70x系列主要特性:

　　Blackfin+ core with up to 400 MHz performance

　　Dual 16-bit or single 32-bit MAC support per cycle

　　16-bit complex MAC and many other instruction set enhancements

　　Instruction set compatible with previous Blackfin products

　　Low-cost packaging

　　88-Lead LFCSP_VQ (QFN) package (12 mm × 12 mm), RoHS compliant

　　184-Ball CSP_BGA package (12 mm × 12 mm × 0.8 mm pitch), RoHS compliant Low system power with < 100 mW core domain power at 400 MHz (< 0.25 mW/MHz) at 25°C TJUNCTION

　　PERIPHERALS FEATURES

　　Processor Block Diagram and Table 1, Processor Comparison

　　MEMORY

　　136 kB L1 SRAM with multi-parity-bit protection (64 kB instruction, 64 kB data, 8 kB scratchpad)

　　Large on-chip L2 SRAM with ECC protection 256 kB, 512 kB, 1 MB variants

　　On-chip L2 ROM (512 kB)

　　L3 interface (CSP_BGA only) optimized for lowest system power, providing 16-bit interface to DDR2 or LPDDR DRAM devices (up to 200 MHz)

　　Security and one-time-programmable memory

　　Crypto hardware accelerators

　　Fast secure boot for IP protection

　　memDMA encryption/decryption for fast run-time security

　　图1.ADSP BF70x系列框图

　　图2. ADSP BF70x系列Blackfin+处理器核框图

　　Analog Devices leads the industry in highly accurate and precise signal measurement and control by delivering cost competitive, high quality ICs for reliablemetering, measurement, and control. These products are used in renewable energy, electrical power transmission, and distribution applications, as wellas electric, gas, and water metering. The combination of ADI’s proven expertise in optimized system-level signal processing performance and its extensiverange of product offerings provides developers with accurate, reliable, and easy to design energy management solutions.

　　ADI的产品组合覆盖空中、地面和海上无人系统，从小型消费类产品到大型长航时系统。ADI产品组合专注于五个主要领域以支持无人系统业务

　　图3.ADI无人系统业务框图

　　ADI无人系统业务主要挑战和系统设计考虑

　　随着市场的成熟以及无人系统承担更多的载人系统任务，必须考虑可靠性、责任和认证。目前，更高的复杂性、更大的有效载荷和更长的距离推动对成熟的系统设计过程的需求。

　　如果需要政府认证，则无人机制造商将会关注DO-178B/C和DO-254等标准。类似考虑因素(ISO 26262)可能发展到涵盖地面无人系统。

　　ADI在各种行业中的功能安全要求方面具有丰富的经验。目前，航空航天部门正在进行航空认证支持。

　　图4.民用无人机信号链

　　ADI无人系统业务特色产品: