Nope, not talking about the tuna fish, BlackFin is a Microprocessor manufactured by Analog Devices & its architecture was co-developed with Intel Corporation. We can possibly call the BlackFin Core as a Hybrid Between the SHARC & Xscale processor families. in other words it has the both micro controller features & DSP features.
More about the DSP v/s Microcontroller can be found at edaBoard
Boot up to BlackFin here
I hope to dissect BlackFin Core and clear some neural fog and hopefully try and cloud the readers by using some fancy jargon, just kidding!