Enhanced versions of the Blackfin DSP offer features such as dual cores for symmetrical multiprocessing and increased operating frequencies for higher throughput. The ADSP-BF561 contains two identical 533 Blackfin DSP cores, a shared 128-kbyte level 2 cache, and many system peripheral functions. Each core includes a 32-kbyte instruction cache/SRAM and a 64-kbyte data cache/SRAM, as well as a small 4-kbyte scratchpad SRAM. Symmetric multiprocessing is possible and operation reaches 750 MHz, delivering a throughput of 1.5 GMACs per core. Speed upgrades to the ADSP-BF533 single-core DSP chip are available. This processor now operates at clock speeds of up to 750 MHz, too. The 750- and 600-MHz versions of the BF561 sell for $39.95 and $22.95 apiece, respectively, in lots of 10,000 units. In similar quantities, the 600- and 750-MHz BF533 cost $15.95 and $31.95, respectively.
Analog Devices Inc.