DESCRIPTION

The µPD30550 (VR5500) is a member of the VRSeries™ of RISC (Reduced Instruction Set Computer) microprocessors. It is a high-performance 64-/32-bit microprocessor that employs the RISC architecture developed by MIPS™.

The VR5500 allowsselection of a 64-bit or 32-bit bus width for the system interface, and can operate using protocols compatible with the VR5000 Series™ and VR5432™

. FEATURES

• MIPS 64-bit RISC architecture

• High-speed operation processing

• Two-waysuperscaler super pipeline

• 300 MHz product: 603 MIPS

400 MHz product: 804 MIPS

• High-speed translation lookaside buffer (TLB) (48 entries)

•Address space

• Physical: 36 bits (64-bit bus selected) 32 bits (32-bit bus selected)

• Virtual: 40 bits (in 64-bit mode) 31 bits (in 32-bit mode)

• On-chip floating-point unit (FPU)

• Supports sum-of-products instructions

• On-chip primarycache memory (instruction/data: 32 KB each)

• 2-wayset associative

• Supports line lock feature