This part is a kind of semiconductor called ADSP-21487.
Function of this product has SHARC Processor.
Manufacturers : Analog Devices
Image and pinout :

Some of the text within the PDF file :
SHARC Processor ADSP-21483/ADSP-21486/ADSP-21487/ADSP-21488/ADSP-21489 SUMMARY High performance 32-bit/40-bit floating-point processor optimized for high performance audio processing Single-instruction, multiple-data (SIMD) computational architecture On-chip memory5 Mbits on-chip RAM, 4 Mbits on-chip ROM Up to 450 MHz operating frequency Code compatible with all other members of the SHARC family The ADSP-2148x processors are available with unique audiocentric peripherals, such as the digital applications interface, serial ports, precision clock generators, S/PDIF transceiver, asynchronous sample rate converters, input data port, and more For complete ordering information, see Ordering Guide on Page 66 Qualified for automotive applications SIMD Core Instruction Cache 5 Stage Sequenc [ ... ]
ADSP-21487 PDF Datasheet Download
