This part is a kind of semiconductor called MR4010.

Function of this product has Superscalar Microprocessor.

Manufacturers : LSI Logic

Image and pinout :

Some of the text within the PDF file :

MiniRISC™ MR4010 Superscalar Microprocessor Reference Device Contents 1 2 3 4 5 6 7 8 9 MR4010 Features MR4010 Functional Blocks 2.1 CW4010 Shell 2.2 Synchronous DRAM Controller (DRAMC) 2.3 SCbus to Local I/O Bus (Lbus) Controller (SCLC) 2.4 PLL Clock Circuit MR4010 Programming Model Signal Descriptions 4.1 SCbus Interface 4.2 External Buffering for SCbus Signals 4.3 CW4010 Shell Interface 4.4 Mbus Interface 4.5 Lbus Interface 4.6 Phase-Locked Loop (PLL) Clock Signals 4.6 Test Signals 4.7 CW4010 Core Monitor Signals PLL Circuit System Configuration 6.1 CW4010 CCC Register 6.2 Lbus Controller Registers MR4010 Memory Map CW4010 Instruction Set Summary DRAM Controller and Memory Bus 9.1 DRAM Types and Available DRAM Address Area 9.2 Memory Interface 9.3 Address B [ ... ]

MR4010 PDF Datasheet Download