Blackfin DSPs target power-limited imaging in automotive, industrial applications

June 13, 2014 // By Graham Prophet
Analog Devices has extended the Blackfin DSP series with devices that offer doubled performance/power ratios. The ADSP-BF70x processor ranges up to 800 MMACs performance and 1 MB of embedded SRAM.

These Blackfin processors are high-performance DSPs delivering 800 MMACS of processing power at less than 100 mW – double the performance or half the power of competing devices. The eight-member Blackfin processor family includes up to 1 MB of internal SRAM, eliminating external memory in many applications, while a second configuration features an optional DDR memory interface. The combination of performance, power efficiency, integration and value allows you to incorporate 16- and 32-bit processing in a range of new embedded vision use cases, including industrial imaging and building controls as well as portable and automotive audio. They include an array of connectivity options (including USB, SDIO, CAN, ePPI, SPORT, QuadSPI) for power sensitive bus-powered applications.

ADI positions them as high-performance, ultra-low-power DSPs, delivering up to 400 MHz with single-cycle, dual-16-bit, 32-bit and complex fixed-point math capability – all while operating on a 95-mW core power budget. ADI designed them around the needs of industrial and building automation applications, including intelligent lighting and occupancy sensing and industrial imaging in cameras, barcode readers and biometric sensors. The processor family's low-power consumption, new 32-bit math and large on-chip SRAM also suits it to portable audio and automotive audio, where deterministic real-time processing is critical for high-fidelity sound.

They have an onboard crypto hardware accelerator that features fast secure boot with decryption and authentication. For always-on safety-critical applications, the BF70x series also provides high data integrity with parity and error-correction code (ECC)-protected memory circuitry. ADI’s new line of highly integrated Blackfin processors is available in single 12 × 12 QFN or 12 × 12 BGA packages starting at under $4.00/1k units.

For audio and video system architects, Analog Devices makes available ADI software modules, including image processing applications software (such as video occupancy sensing, image processing toolbox, 2D graphics); video imaging codecs such as JPEG and H.264BP/MP; audio codecs including MP3 and WMA; and post processing software including asynchronous sample rate converters and multi-band